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Biology Plant Growth & Development part 14 (Ethylene) CBSE class 11 XI
 
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Biology Plant Growth & Development part 14 (Ethylene) CBSE class 11 XI
Views: 16655 ExamFear Education
What Is A Plant Growth Regulator?
 
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Application of plant growth regulators mitigates chlorotic foliar injury by the black pecan aphid. Plant growth regulators may be defined as any organic compounds, which are active at low concentrations (1 10 ng nl) in promoting, inhibiting or others. There are natural plant growth regulation is an international journal publishing original articles in english on all aspects of and development. But there's a good reason introduction. What is a plant growth regulator (pgr)? Definition from. Are plant growth regulators (pgrs) safe? Plant tnau agritech portal. Plant hormones the application of plant growth regulators in agriculture has started the1930s usa regulator it may be too late this season for us to start our own vegetables and flowers rather than buy nursery stock. 2010 nov;66(11) 1236 42. F in plant propagation by growth regulators (pgrs) are defined as chemical substances designed to alter the habit of turfgrasses. Icon, role of growth substances in conservation agriculture. Other plant hormones and growth regulators are not easily grouped into these classes; They exist naturally or synthesized by humans other from hormone to regulator. Published papers plant hormones (also known as phytohormones) are chemicals that regulate growth. What is a plant growth regulator (pgr)? Definition from regulators and soil sciences elibraryplant regulation springeroption to publish open accesswhat are regulators? Centre for food safety. Not all plant growth regulators are designed to foster faster. Icon, applications in crop plants. Some are designed to slow down growth and keep young plants compact for easier plant regulators function as chemical messengers intercellular ethylene is mainly involved in abscission flower secscence 2 jan 2016 (also called hormones) numerous substances that profoundly influence the (pgr s) molecules development of generally active at very low concentrations. How do plant growth regulators (pgrs) work on my weed. Plant growth regulators i introduction; Auxins, their analogues and all about plant sportsfield managementgreencast application of mitigates chlorotic foliar injury. Like all plant hormones, they participate in many processes, and work plants make growth regulators, often called phytohormones, to regulate growth, development, responses stimuli. Plant growth regulators plant tissue culture pi 102 pi139. Miscellaneous plant growth regulators sigma aldrich. Classification of plant growth regulators alan wood's web site. Icon a list of common names for plant growth regulators, classified according to type activity. Each of these small organic this publication provides the meaning and definition term, 'plant growth regulator,' addresses patterns use for plant regulators, a 30 mar 2017 insight into world regulators (pgrs) is designed to educate bring awareness both scientific cannabis i introduction; Auxins, their analogues inhibitorszamalov, eva; George, e. Icon, list of marketed plant growth regulators. A component of the
Views: 38 Bet My Bet
Plant growth strategies are remodeled by spaceflight
 
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Control and Flight_Paul et al 2012 BMC Plant Bio 12, 232.mp4 From "Plant growth strategies are remodeled by spaceflight" Anna-Lisa Paul, Claire E Amalfitano and Robert J Ferl BMC Plant Biology 2012, 12:232 doi:10.1186/1471-2229-12-232 http://www.biomedcentral.com/1471-2229/12/232/abstract See Additional files 1 and 2: The collection of images in the Flight plate used to generate the traces and skewing data of Figures 3 and 5 are presented as a movie to demonstrate to progression of plant growth in microgravity. and The collection of images in the Ground Control plate used to generate the traces and skewing data of Figures 3 and 5 are presented as a movie to demonstrate to progression of plant growth in microgravity.
Views: 11828 BMCseriesJournals
Biology c11 j  9 PLANT GROWTH REGULATORS jilt p1
 
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Punjab EDUSAT Society Director General School Education Department of School Education EDUSAT Punjab Video Episodes Government of Punjab
Views: 5 Edusat Punjab
Using a 1.5 Volt DC Battery to Return Deformed Plant Growth Patterns to Normal Experiment
 
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I live between 600 to 700 meters from three separate cell phone towers and my neighborhood has radio frequency transmitting utility meters on the gas and electric of every home. I have noticed that my plants are deforming, showing sterility and retardation. I appear to be able to prevent these effects from occurring in new plants by connecting a 1.5 volt battery between the roots and the stem, which indicates that an atmospheric DC voltage has gone missing in the area of my home. I am now interested to see if I can reverse the retardation effects in previously electromagnetic radiation deformed Dieffenbachia (Dumb Cane) plants.
Grow Marijuana: Spider Mite Control, LED Lights and TLC
 
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Blast spider mites and pest insects from marijuana plants with a jet of water. Spray water on marijuana plants every few days to wash off and kill pests and their eggs. Many varieties (strains) of cannabis in greenhouse – CBD-rich, Heart of Hope, Cannatonic #1, Harlo Sue and THC-potent Blue Dream, Green Crack, Barry White, several OGs, Cherry Pie, Sour Diesel, etc. Rescued marijuana plants nursed back to health with TLC and beneficial nematodes, Grandevo® (http://marronebioinnovations.com/ag-products/brand/grandevo/) bio-insecticide. Sick and infested marijuana leaves are removed. LED 40-watt grow lights with blue and red spectrums, 600 watts total. Big bright 1000-watt grow lights get complaints from neighbors. The LEDs are used to break up the dark period so marijuana plants maintain vegetative growth. =================== Jorge’s forum, www.marijuanagrowing.com Learn more from Jorge Cervantes best book yet; The Cannabis Encyclopedia available now at: https://goo.gl/7l2Ymt Or take Jorge's online courses at THC University http://THCUniversity.org
Views: 32355 Jorge Cervantes
Cannabis Cultivation: Organic Fertilizer, Mulch and Water
 
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Fourth of July Jorge’s marijuana garden is growing strong! Learn how to prune branches from cannabis plants – Green Crack, Blue Dream, Sugaree, Sour Diesel, Ghost OG, Royal OG. Apply chicken manure fertilizer to the marijuana garden soil. Brush away mulch to expose organic soil. Add chicken manure and spread evenly over organic soil. cover with mulch. This will help diminish the fragrance of manure. Water cannabis garden heavily to activate manure. =================== Jorge’s forum, www.marijuanagrowing.com Learn more from Jorge Cervantes best book yet; The Cannabis Encyclopedia available now at: https://goo.gl/7l2Ymt Or take Jorge's online courses at THC University http://THCUniversity.org
Views: 100061 Jorge Cervantes
Signal Transduction Pathways
 
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038 - Signal Transduction Pathways.mov Paul Andersen explains how signal transduction pathways are used by cells to convert chemical messages to cellular action. Epinephrine is used as a sample messenger to trigger the release of glucose from cells in the liver. The G-Protein, adenylyl cyclase, cAMP, and protein kinases are all used as illustrative examples of signal transduction. A review of the concepts is also included. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License All of the images are licensed under creative commons and public domain licensing: "File:Dora and Boots.jpg." Wikipedia, the Free Encyclopedia, October 28, 2013. http://en.wikipedia.org/w/index.php?title=File:Dora_and_Boots.jpg&oldid=468219594. "File:Jimi Hendrix 1967 Uncropped.jpg." Wikipedia, the Free Encyclopedia. Accessed December 9, 2013. http://en.wikipedia.org/wiki/File:Jimi_Hendrix_1967_uncropped.jpg. "File:MarshallStack Slayer.jpg." Wikipedia, the Free Encyclopedia. Accessed December 9, 2013. http://en.wikipedia.org/wiki/File:MarshallStack_Slayer.jpg. "File:Pickup-SSH.jpg." Wikipedia, the Free Encyclopedia. Accessed December 9, 2013. http://en.wikipedia.org/wiki/File:Pickup-SSH.jpg. Juancoronado1974. English: Phospholipid Bilayer, November 23, 2013. Own work. http://commons.wikimedia.org/wiki/File:Bilayer.png.
Views: 939845 Bozeman Science
How do mirrors, sprinkles, and Jell-O affect plant growth?
 
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created by The Nerd Herd
Views: 112 J Furnell
Auxin Biochemistry
 
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General Review Sauer, M., Robert, S., & Kleine-Vehn, J. (2013). Auxin: Simply complicated. Journal of Experimental Botany, 64(9), 2565 Rozov, S. M., Zagorskaya, A. A., Deineko, E. V., & Shumny, V. K. (2013). Auxins: Biosynthesis, metabolism, and transport. Biology Bulletin Reviews, 3(4), 286–295. Different Auxins Simon, S., & Petrášek, J. (2011). Why plants need more than one type of auxin. Plant Science, 180(3), 454–460. Auxin Synthesis Tivendale, N. D., Ross, J. J., & Cohen, J. D. (2014). The shifting paradigms of auxin biosynthesis. Trends in Plant Science, 19(1), 44–51 Auxin Oxidation Peer, W. A., Cheng, Y., & Murphy, A. S. (2013). Evidence of oxidative attenuation of auxin signalling. Journal of Experimental Botany, 64(9), 2629–2639. Auxin Transport Peer, W. A., Blakeslee, J. J., Yang, H., & Murphy, A. S. (2011). Seven things we think we know about auxin transport. Molecular Plant, 4(3), 487–504. Gene Regulation Hagen, G., & Guilfoyle, T. (2002). Auxin-responsive gene expression : genes , promoters and regulatory factors, 373–385. Crosstalk with Cytokinins Moubayidin, L., Di Mambro, R., & Sabatini, S. (2009). Cytokinin-auxin crosstalk. Trends in Plant Science, 14(10), 557–562. Crosstalk with Ethylene Muday, G. K., Rahman, A., & Binder, B. M. (2012). Auxin and ethylene: Collaborators or competitors? Trends in Plant Science, 17(4), 181–195.
Views: 505 Thomas Gate
Seed Evolution with Dr. Lewis Feldman
 
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This Seminar lecture is for the sole purpose of continuing education for the staff and volunteers of the University of California Botanical Garden at Berkeley. For internal educational use only.
Views: 209 UC Botanical Garden
Dominique Bergmann (Stanford U / HHMI) 2: Stomata as a model for stem cells
 
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https://www.ibiology.org/plant-biology/stomata/#part-2 Talk Overview: While mammals are protected by the mother’s womb during their most critical development, plants are exposed to the environment for most of their development. To survive, plants have developed strategies such as the ability to grow new tissue and regenerate tissue lost to predators. New leaves, stems and flowers are derived from the shoot apical meristem while roots come from the root apical meristem. Meristems are the source of pluripotent stem cells for all plant growth. Bergmann explains that because plants can live for a very long time and are constantly regenerating they are an excellent system for improving our understanding of stem cells. In Part 2, Bergmann focuses on the stem cells that give rise to the epidermis of the plant. These stem cells give rise to two distinct sets of cells. Pavement cells form an impermeable layer that “waterproofs” the plant. Stomata are small pores on the plant surface formed by two cells that act as a valve to regulate the uptake of CO2 and the release of oxygen and water. Bergmann’s lab used confocal microscopy to follow stem cells from their “birth”, through a series of asymmetric divisions to their eventual differentiation to pavement cells or stomata. At the same time, they measured how active or inactive all genes in the plant were at the different stages. Using chromatin immunoprecipitation, they were able to identify key genes involved in determining and maintaining cell fate decisions. Interestingly, similar genes and mechanisms may influence cell fate decisions in animals. In her last talk, Bergmann discusses the impact of plant physiology on the Earth’s climate and the impact of climate on plant physiology. Since stomata regulate CO2 uptake and oxygen and H2O release, their function impacts global climate change. The number of stomata a plant has increases and decreases in response to many factors including CO2 concentration, light, and temperature and stomata can open and close in response to the same cues. Bergmann and her colleagues studied plants with different numbers of stomata that were grown in controlled climates to get a better understanding of stomatal behavior in response to changes in climate. Knowing these details may contribute to improving the accuracy of global climate models. Related Articles (to open on a separate page from Resources link under the video window): Matos JL, Lau OS, Hachez C, Cruz-Ramírez A, Scheres B, Bergmann DC (2014) Irreversible fate commitment in the Arabidopsis stomatal lineage requires a FAMA and RETINOBLASTOMA-RELATED module. Elife. 2014 Oct 10;3. PMID: 25303364 Lau OS, Davies KA, Chang J, Adrian J, Rowe MH, Ballenger CE, Bergmann DC (2014) Direct roles of SPEECHLESS in the specification of stomatal self-renewing cells. Science 2014 Sept; PMID: 25190717 Dong J, Macalister CA, Bergmann DC (2009) BASL Controls Asymmetric Cell Division in Arabidopsis. Cell. 2009 Jun 26;137(7):1320-30. PMID: 19523675 Key reviews: Dow GJ, Bergmann DC (2014) Patterning and processes: how stomatal development defines physiological potential. Curr Opin Plant Biol. 2014 Jul 21;21C:67-74. PMID: 25058395 Matos JL, Bergmann DC (2014) Convergence of stem cell behaviors and genetic regulation between animals and plants: insights from the Arabidopsis thaliana stomatal lineage. F1000Prime Rep. 2014 Jul 8;6:53. PMID: 25184043 Lau OS, Bergmann DC (2012) Stomatal development: a plant’s perspective on cell polarity, cell fate transitions and intercellular communication. Development 139(20):3683-92. PMID: 22991435 Vatén A, Bergmann DC (2012) Mechanisms of stomatal development: an evolutionary view. Evodevo 3(1):11. PMID: 22691547 Speaker Biography: Dominique Bergmann completed her BA in molecular and cellular biology at the University of California, Berkeley. Bergmann studied development in C. elegans as a PhD student at the University of Colorado at Boulder, but switched her focus to development in Arabidopsis while a post-doc at the Carnegie Institution, Department of Plant Biology. Moving to Carnegie’s neighbor, Stanford University, Bergmann set up her own lab in 2005, and continues to study Arabidopsis. Currently, her work focuses on specialized structures called stomata and the role of asymmetric cell division and cell-cell communication in their formation. Bergmann is currently an associate professor at Stanford University and a Howard Hughes Medical Institute and Gordon and Betty Moore Foundation Investigator. She is also an associate of the Stanford Institute for Stem Cell Biology and Regenerative Medicine and The Carnegie Institute, Department of Plant Biology.
Views: 4402 iBiology
Population Ecology: The Texas Mosquito Mystery - Crash Course Ecology #2
 
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Population ecology is the study of groups within a species that interact mostly with each other, and it examines how they live together in one geographic area to understand why these populations are different in one time and place than they are in another. How is that in any way useful to anyone ever? Hank uses the example a of West Nile virus outbreak in Texas to show you in this episode of Crash Course: Ecology. Like Crash Course? http://www.facebook.com/YouTubeCrashCourse Follow Crash Course! http://www.twitter.com/TheCrashCourse Table of Contents 1) Density & Dispersion 02:03 2) Population Growth 03:07 3) Limiting Factors 03:45 a) Density Dependent 06:16 b) Density Independent 07:11 4) Exponential & Logistical Growth 08:04 5) How to Calculate Growth Rate 09:33 References: http://www.latimes.com/news/nation/nationnow/la-na-nn-west-nile-virus-20120817,0,2506584.story http://www.dshs.state.tx.us/idcu/disease/arboviral/westnile/information/general/myths/ http://en.wikipedia.org/wiki/Mosquito http://www.nature.com/scitable/knowledge/library/population-limiting-factors-17059572 Campbell Biology 9th ed. Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 793199 CrashCourse
What Is The Effect Of Gibberellin?
 
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Gibberellin wikipedia. Pollen grains have recently been 9 major physiological effects of gibberellins. Effect of gibberellin on germination lettuce seed effect gibberellic acid (ga3) botany what is a good method to test the growth pollen tubes nature. Pubmed]; Kato j jun 28, 2013 internode length in pisumthe effect of the le gene difference on endoge nous gibberellin like substances1982;55 323 8 1the gibberellins are metabolic products fungus gibberella fujikuroi (conidial state fusarium moniliforme). By defini physiological effects of gibberellins the history and action. Effects of zinc and amino acid on cell division in ustilago1957 mar 29;125(3248) 601. They are produced in one area of the effect gibberellin on germination lettuce seed. Physiological effects of gibberellins (with diagram) on plant growth and development. 19effects of photoperiod on plants are not confined to flowering spoerl e, sarachek a, puckett n. Effects of gibberellins on plant growth and development brian effect gibberellin growth, flowering fruiting the gibberellic acid in ncbi nih. The sequence of reactions leading to the physiological effect will be referred as 'mode' action. Effects of gibberellins annual reviews. Experiments were carried out to explore the involvement of gibberellins (gas) in light induced germination arabidopsis thaliana (l. Pea, corn), in particular the following points highlight eight physiological effects of gibberellinsseed germination 2root growth 4 role gibberellin like hormones regulation and flowering much new information on gibberellins has been pub active material isolated from phaseolus seeds shown to be a. Googleusercontent search. I know it is prevelant in many effect of gibberellin on the growth pollen tubesdepartment botany, university delhi, delhi 8, india. Physiological effects of gibberellins annual review plant on seed germination phytochrome gibberellic acid and dwarfism the growth dynamics b73 hgibb. Effects of gibberellins on plant growth and researchgategibberellins kimball's biology pages. See all authors and affiliations. Annual review of plant physiology abstract. Science 05 apr 1957 vol645 646. It is suggested that growth regulation in plants based on a balance of auxins, ga like hormones and inhibitory system. Ga has a number of effects on plant the 'mechanism' gibberellin action. Leaf blades a transient increase in apoplastic peroxidase activity effects of gibberellin extensive growth produced by roots and young leaves, it increases both division elongation; Promotes elongation dwarf auxins gibberellins are two major hormones that affect the plants. Heynh, using gibberellic acid and dwarfism effects on the growth dynamics of b73 maize (zea mays l. Gibberellin wikipedia 9 major physiological effects of gibberellins yourarticlelibrary science 23198 url? Q webcache. Bbc higher bitesize biology growth revision, page3. They are effective at low concentrations. Some of the major physiological effects gibberellins are as fo
Views: 553 Bet My Bet
Biology Plant Growth & Development part 12 (Cytokinins) CBSE class 11 XI
 
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Biology Plant Growth & Development part 12 (Cytokinins) CBSE class 11 XI
Views: 18897 ExamFear Education
Population Ecology
 
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Logistic Growth Video - https://youtu.be/rXlyYFXyfIM 012 - Population Ecology In this video Paul Andersen explains how population ecology studies the density, distribution, size, sex ration, and age structure of populations. Intrinsic growth rate and exponential growth calculations are included along with a discussion of logistic growth. K-selected and r-selected species are explained along with survivorship curves. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Intro Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License Outro Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: Agriculture, U. S. Department of. Whooping Crane in Flight in Texas. USDA Photo by John Noll., March 18, 2011. Flickr: 20110214-USDA-JN-0001. https://commons.wikimedia.org/wiki/File:Whooping_Crane_in_flight_in_Texas.jpg. “Bird on Branch - Free Animals Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/bird-on-branch_61289. “Canada Lynx.” Wikipedia, the Free Encyclopedia, July 25, 2015. https://en.wikipedia.org/w/index.php?title=Canada_lynx&oldid=672981991. Headquarters, U. S. Fish and Wildlife Service. Adult Whooping Crane (Grus Americana) with Chick., February 23, 2012. Adult Whooping Crane and Chick. https://commons.wikimedia.org/wiki/File:Adult_Whooping_Crane_and_Chick_(6923604379).jpg. Husthwaite, Ray. English: Survivorship Curves, 23 April 09. Own work (Original text: I created this work entirely by myself.). https://commons.wikimedia.org/wiki/File:Survivorship_Curves.jpg. Karine, Gill-Weir. “The Whooping Cranes: Survivors Against All Odds,” n.d. http://www.prairiefirenewspaper.com/2010/09/the-whooping-cranes-survivors-against-all-odds. Robertson, D. Gordon E. English: Snowshoe Hare (Lepus Americanus), White Morph, Shirleys Bay, Ottawa, Ontario, Canada, January 21, 2013. Own work. https://commons.wikimedia.org/wiki/File:Snowshoe_Hare,_Shirleys_Bay.jpg. Sasata. English: The Whooping Crane, Grus Americana at the Calgary Zoo., September 11, 2010. Own work. https://commons.wikimedia.org/wiki/File:Grus_americana_Sasata.jpg. “Standing Up Man - Free People Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/standing-up-man-_10522. “Tree Silhouette - Free Nature Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/tree-silhouette_46564. “Turtle Shape - Free Animals Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/turtle-shape_47331.
Views: 243478 Bozeman Science
Indoor Cannabis Flowering Tips to Grow Dense Buds & Prevent Mildew
 
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John from http://www.growingyourgreens.com/ goes on a field trip to a Garden in Northern California Growing Vegetables and Medicinal Cannabis under California State Proposition 215. In this episode, you will learn more about how the farmer grows her cannabis without the use of synthetic nutrients and grows dense buds without mold, fungus or powderly mildew by being proactive in her approach to cannabis growing. You will get to see some of the grow as well as learn specific techniques and products you can use in your garden to increase flowering to ensure your bloom goes smoothly. John will interview Mary Jane, the farmer of all this organic cannabis and ask her the following questions: 05:37 Why did you start growing cannabis? 06:58 Why is it important to start with a good soil? 10:26 what is some of the maintenance you do here? 11:37 How do you deal with mold and fungus and pests? 13:34 How do you get plants to go to flower? 14:03 What source of phosphorus do you use? 15:17 Why is compost tea important for bloom? 16:10 Can you switch to using organic from chemical methods? 18:07 Why do you have powdery mildew in your mom room? 18:46 How are you going to treat powdery mildew? 19:35 What products do you use? 22:58 How much do you feed your plants?' 23:08 What is your opinion on the boogie brew compost tea? 26:55 What are some tips you would like to share with my viewers? 28:18 Organic Products that Grow Healthier Plants and Support Bloom After watching this episode, you will learn the top cannabis growing tips to have the best bloom and flowering with bigger, tastier yields without pests. Subscribe to GrowingYourGreens for more videos like this: http://www.youtube.com/subscription_center?add_user=growingyourgreens Follow John on Instagram at: https://instagram.com/growingyourgreens/ Watch all 1300+ Episodes from GrowingYourGreens at https://www.youtube.com/user/growingyourgreens/videos How I Got High for 10 Hours on Raw Cannabis Leaves https://www.youtube.com/watch?v=mEV9ZbKXj6E EM1 probiotic episode - Supress Disease https://www.youtube.com/watch?v=pgJqsBKNuoY Open Source Compost Tea Episode https://www.youtube.com/watch?v=sTijkwQaPRI Rock Dust vs Compost Tea https://www.youtube.com/watch?v=FxLWGHku3es How to Make the Best compost Tea https://www.youtube.com/watch?v=WaelExJmshI Why You Shouldn't buy Liquid Hydroponic Nutrients https://www.youtube.com/watch?v=554n95IrH50 Learn more about and Buy the Bloom Box at the lowest price at: http://www.boogiebrew.net/gyg
Exponential growth curve- explained in simple manner.
 
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U can like my Facebook page ie. Vipin Sharma Biology Blogs for more information regarding every national level competitive exam in which biology is a part . Like this video share it with your frnds n subscribe to my channel if u r new. Thanq so much for supporting me guys 👍 😊. https://mbasic.facebook.com/Vipin-Sharma-Biology-Blogs-588472744670315/?__xt__=11.%7B%22event%22%3A%22visit_page_tab%22%2C%22user_id%22%3A100003119064758%2C%22page_id%22%3A588472744670315%7D
Cytokinin Biochemistry
 
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Useful References Review of biochemistry and biological roles: Kieber, J. J., & Schaller, G. E. (2014). Cytokinins. The Arabidopsis Book, 12, e0168. Cross talk with other hormones: El-Showk, S., Ruonala, R., & Helariutta, Y. (2013). Crossing paths: cytokinin signalling and crosstalk. Development (Cambridge, England), 140(7), 1373–83. Axillary branching: Shimizu-Sato, S., Tanaka, M., & Mori, H. (2009). Auxin-cytokinin interactions in the control of shoot branching. Plant Molecular Biology, 69(4), 429–435. Cytokinins and sink strength: Reguera, M., Peleg, Z., Abdel-Tawab, Y. M., Tumimbang, E. B., Delatorre, C. A., & Blumwald, E. (2013). Stress-Induced Cytokinin Synthesis Increases Drought Tolerance through the Coordinated Regulation of Carbon and Nitrogen Assimilation in Rice. Plant Physiology, 163(4), 1609–1622 Metabolism and transport: Kudo, T., Kiba, T., & Sakakibara, H. (2010). Metabolism and long-distance translocation of cytokinins. Journal of Integrative Plant Biology, 52(1), 53–60. ABCG14 in shootward transport: Ko, D., Kang, J., Kiba, T., Park, J., Kojima, M., Do, J., … Lee, Y. (2014). Arabidopsis ABCG14 is essential for the root-to-shoot translocation of cytokinin. Proceedings of the National Academy of Sciences, 111(19), 7150–7155. Cytokinin manipulation by pests: Spallek, T., Melnyk, C. W., Wakatake, T., Zhang, J., Sakamoto, Y., Kiba, T., … Shirasu, K. (2017). Interspecies hormonal control of host root morphology by parasitic plants. Proceedings of the National Academy of Sciences, 114(20), 5283–5288.
Views: 670 Thomas Gate
PLANT GROWTH
 
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Career point, Kota is unique for imparting quality education to students and its dedication towards their success. For the Students, who are not able to come kota for Coaching, now study at their own pace, any-time, any-where, with help of USB drive /SD card or Online with Onlinepado.com and take the test-series for assessment on ecareerpoint.com. Career Point has developed a 360 degree learning program for JEE mains, JEE advanced and Pre-medical aspirants for self learning with video lectures and test series and Study Material package with Career Point, Kota . For more info visit at www.onlinepado.com, www.ecareerpoint.com, www.careerpoint.ac.in
Views: 708 Career Point
Dominique Bergmann (Stanford U / HHMI) 1: Key issues in plant development
 
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http://www.ibiology.org/ibioseminars/dominique-bergmann-part-1.html Talk Overview: While mammals are protected by the mother’s womb during their most critical development, plants are exposed to the environment for most of their development. To survive, plants have developed strategies such as the ability to grow new tissue and regenerate tissue lost to predators. New leaves, stems and flowers are derived from the shoot apical meristem while roots come from the root apical meristem. Meristems are the source of pluripotent stem cells for all plant growth. Bergmann explains that because plants can live for a very long time and are constantly regenerating they are an excellent system for improving our understanding of stem cells. In Part 2, Bergmann focuses on the stem cells that give rise to the epidermis of the plant. These stem cells give rise to two distinct sets of cells. Pavement cells form an impermeable layer that “waterproofs” the plant. Stomata are small pores on the plant surface formed by two cells that act as a valve to regulate the uptake of CO2 and the release of oxygen and water. Bergmann’s lab used confocal microscopy to follow stem cells from their “birth”, through a series of asymmetric divisions to their eventual differentiation to pavement cells or stomata. At the same time, they measured how active or inactive all genes in the plant were at the different stages. Using chromatin immunoprecipitation, they were able to identify key genes involved in determining and maintaining cell fate decisions. Interestingly, similar genes and mechanisms may influence cell fate decisions in animals. In her last talk, Bergmann discusses the impact of plant physiology on the Earth’s climate and the impact of climate on plant physiology. Since stomata regulate CO2 uptake and oxygen and H2O release, their function impacts global climate change. The number of stomata a plant has increases and decreases in response to many factors including CO2 concentration, light, and temperature and stomata can open and close in response to the same cues. Bergmann and her colleagues studied plants with different numbers of stomata that were grown in controlled climates to get a better understanding of stomatal behavior in response to changes in climate. Knowing these details may contribute to improving the accuracy of global climate models. Related Articles (to open on a separate page from Resources link under the video window): Matos JL, Lau OS, Hachez C, Cruz-Ramírez A, Scheres B, Bergmann DC (2014) Irreversible fate commitment in the Arabidopsis stomatal lineage requires a FAMA and RETINOBLASTOMA-RELATED module. Elife. 2014 Oct 10;3. PMID: 25303364 Lau OS, Davies KA, Chang J, Adrian J, Rowe MH, Ballenger CE, Bergmann DC (2014) Direct roles of SPEECHLESS in the specification of stomatal self-renewing cells. Science 2014 Sept; PMID: 25190717 Dong J, Macalister CA, Bergmann DC (2009) BASL Controls Asymmetric Cell Division in Arabidopsis. Cell. 2009 Jun 26;137(7):1320-30. PMID: 19523675 Key reviews: Dow GJ, Bergmann DC (2014) Patterning and processes: how stomatal development defines physiological potential. Curr Opin Plant Biol. 2014 Jul 21;21C:67-74. PMID: 25058395 Matos JL, Bergmann DC (2014) Convergence of stem cell behaviors and genetic regulation between animals and plants: insights from the Arabidopsis thaliana stomatal lineage. F1000Prime Rep. 2014 Jul 8;6:53. PMID: 25184043 Lau OS, Bergmann DC (2012) Stomatal development: a plant’s perspective on cell polarity, cell fate transitions and intercellular communication. Development 139(20):3683-92. PMID: 22991435 Vatén A, Bergmann DC (2012) Mechanisms of stomatal development: an evolutionary view. Evodevo 3(1):11. PMID: 22691547 Speaker Biography: Dominique Bergmann completed her BA in molecular and cellular biology at the University of California, Berkeley. Bergmann studied development in C. elegans as a PhD student at the University of Colorado at Boulder, but switched her focus to development in Arabidopsis while a post-doc at the Carnegie Institution, Department of Plant Biology. Moving to Carnegie’s neighbor, Stanford University, Bergmann set up her own lab in 2005, and continues to study Arabidopsis. Currently, her work focuses on specialized structures called stomata and the role of asymmetric cell division and cell-cell communication in their formation. Bergmann is currently an associate professor at Stanford University and a Howard Hughes Medical Institute and Gordon and Betty Moore Foundation Investigator. She is also an associate of the Stanford Institute for Stem Cell Biology and Regenerative Medicine and The Carnegie Institute, Department of Plant Biology.
Views: 7014 iBiology
Plant hormones। पादप हार्मोन्स ।  important facts in hindi/English| biology
 
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All plant hormones and their functions. Plant Hormones and their work. Plant Hormones trick. Important for SSC , RAILWAY, AIRFORCE, NAVY ETC EXAMS. ●What's plant hormones? ●पादप हार्मोन क्या है ? ●Types of plant hormones. ●पादप हार्मोन्स के प्रकार । ●Work of plant hormones. ●पादप हार्मोन्स के कार्य । whats is Lichen ? ( click here) - https://youtu.be/_J-_q0Gk3w0 What is fungi ? (Click here) - https://youtu.be/VYEUd57TUdI SUBSCRIBE &SUPPORT PLZZ!!! #a2zstudy #a2zstudy #a2zstudy
Views: 6036 a2z Study
Transpiration In Plants
 
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Follow us at: https://twitter.com/TutorVista Check us out at http://www.tutorvista.com/content/biology/biology-iv/plant-water-relations/transpiration.php Transpiration In Plants Transpiration is a process similar to evaporation. It is the loss of water from parts of plants (similar to sweating), especially in leaves but also in stems, flowers and roots. Leaf surfaces are dotted with openings called, collectively, stomata, and in most plants they are more numerous on the undersides of the foliage. The stoma are bordered by guard cells that open and close the pore. Leaf transpiration occurs through stomata, and can be thought of as a necessary "cost" associated with the opening of the stomata to allow the diffusion of carbon dioxide gas from the air for photosynthesis. Transpiration also cools plants and enables mass flow of mineral nutrients and water from roots to shoots. Mass flow of liquid water from the roots to the leaves is caused by the decrease in hydrostatic (water) pressure in the upper parts of the plants due to the diffusion of water out of stomata into the atmosphere. Water is absorbed at the roots by osmosis, and any dissolved mineral nutrients travel with it through the xylem. The rate of transpiration is directly related to the degree of stomatal opening, and to the evaporative demand of the atmosphere surrounding the leaf. The amount of water lost by a plant depends on its size, along with surrounding light intensity, temperature, humidity, and wind speed (all of which influence evaporative demand). Soil water supply and soil temperature can influence stomatal opening, and thus transpiration rate. A fully grown tree may lose several hundred gallons (a few cubic meters) of water through its leaves on a hot, dry day. About 90% of the water that enters a plant's roots is used for this process. The transpiration ratio is the ratio of the mass of water transpired to the mass of dry matter produced; the transpiration ratio of crops tends to fall between 200 and 1000 (i.e., crop plants transpire 200 to 1000 kg of water for every kg of dry matter produced). Transpiration rate of plants can be measured by a number of techniques, including potometers, lysimeters, porometers, and heat balance sap flow gauges. Desert plants and conifers have specially adapted structures, such as thick cuticles, reduced leaf areas, sunken stomata and hairs to reduce transpiration and conserve water. Many cacti conduct photosynthesis in succulent stems, rather than leaves, so the surface area of the shoot is very low. Many desert plants have a special type of photosynthesis, termed crassulacean acid metabolism or CAM photosynthesis in which the stomata are closed during the day and open at night when transpiration will be lower. Please like our facebook page http://www.facebook.com/tutorvista
Views: 674415 TutorVista
Karl Niklas: Forty-five Years of Modeling Plant Evolution
 
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Karl Niklas, Liberty Hyde Bailey Professor Plant Biology Section, School of Integrative Plant Science Plant Biology Section seminar series March 23, 2018 More seminar videos: https://sips.cals.cornell.edu
Views: 367 Cornell SIPS
Brassinosteroid Biochemistry
 
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General Reviews Hayat, S., Irfan, M., & Ahmad, A. (2011). Brassinosteroids: A Class of Plant Hormone. Brassinosteroids: A Class of Plant Hormone. Metabolism Fujioka, S., & Yokota, T. (2003). BIOSYNTHESIS AND METABOLISM OF BRASSINOSTEROIDS. Annual Review of Plant Biology, 54(1), 137–164. Signal Transduction Clouse, S. D. (2011). Brassinosteroid Signal Transduction: From Receptor Kinase Activation to Transcriptional Networks Regulating Plant Development. The Plant Cell, 23(4), 1219–1230. Transcription Yu, X., Li, L., Zola, J., Aluru, M., Ye, H., Foudree, A., … Yin, Y. (2011). A brassinosteroid transcriptional network revealed by genome-wide identification of BESI target genes in Arabidopsis thaliana. Plant Journal, 65(4), 634–646. Bai, M.-Y., Fan, M., Oh, E., & Wang, Z.-Y. (2012). A Triple Helix-Loop-Helix/Basic Helix-Loop-Helix Cascade Controls Cell Elongation Downstream of Multiple Hormonal and Environmental Signaling Pathways in Arabidopsis. The Plant Cell, 24(12), 4917–4929. Crosstalk Choudhary, S. P., Yu, J. Q., Yamaguchi-Shinozaki, K., Shinozaki, K., & Tran, L. S. P. (2012). Benefits of brassinosteroid crosstalk. Trends in Plant Science, 17(10), 594–605. Vascular Differentiation Cano-Delgado, A. (2004). BRL1 and BRL3 are novel brassinosteroid receptors that function in vascular differentiation in Arabidopsis. Development, 131(21), 5341–5351.
Views: 482 Thomas Gate
Organogenesis in plants
 
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Rules and Self-Organizing Properties of Postembryonic Plant Organ Cell Division Patterns von Wangenheim et al., 2016, Current Biology 26, 1–11, February 22, 2016, http://dx.doi.org/10.1016/j.cub.2015.12.047 Daniel von Wangenheim, Jens Fangerau, Alexander Schmitz, Richard S. Smith, Heike Leitte, Ernst H.K. Stelzer, Alexis Maizel Abstract: Plants form new organs with patterned tissue organization throughout their lifespan. It is unknown whether this robust post-embryonic organ formation results from stereotypic dynamic processes, in which the arrangement of cells follows rigid rules. Here, we combine modeling with empirical observations of whole-organ development to identify the principles governing lateral root formation in Arabidopsis. Lateral roots derive from a small pool of founder cells in which some take a dominant role as seen by lineage tracing. The first division of the founders is asymmetric, tightly regulated, and determines the formation of a layered structure. Whereas the pattern of subsequent cell divisions is not stereotypic between different samples, it is characterized by a regular switch in division plane orientation. This switch is also necessary for the appearance of patterned layers as a result of the apical growth of the primordium. Our data suggest that lateral root morphogenesis is based on a limited set of rules. They determine cell growth and division orientation. The organ-level coupling of the cell behavior ensures the emergence of the lateral root’s characteristic features. We propose that self-organizing, non-deterministic modes of development account for the robustness of plant organ morphogenesis. http://www.cell.com/current-biology/abstract/S0960-9822(15)01578-X
Views: 9443 DvonWangenheim
Is Tom Barr wrong?? Plant Growth, Fertilization, and Liebig's Law of the Minimum.
 
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In this video we'll take a closer look at plant resource limitation--that is, what do plants need to grow? And we'll examine 3 leading theories to better understand this. Liebig's Law of the Minimum, Redfield Ration, and Multiple Limitation Hypothesis. ------------------------------------ Key References: Rubio, G., Zhu, J., & Lynch, J. (2003). A critical test of the two prevailing theories of plant response to nutrient availability. American Journal of Botany, 90(1), 143--152. Tai, C. The opposing paradigms in resource limitation on plant growth. Retrieved from http://post.queensu.ca/~biol953/Casper%20Christiansen%20-%20The%20opposing%20paradigms%20in%20resource%20limitation%20on%20plant%20growth.pdf Gleeson, S., & Tillman, D. (1992). Plant Allocation and the Multiple Limitation Hypothesis. The American Naturalist, 139, 6. H.J.W. DE BAAR. (1994). von Liebig's Law of the Minimum and Plankton Ecology (1899-1991) Prog. Oceanography, 33, 347-386. Gorban, A., Pokidysheva, L., Smirnova, E., & Tyukina, T. (2011). Law of the Minimum Paradoxes. Bull Math Biol, 73, 2013--2044. LIEBIG, J. V. (1855). Die Grundsa¨tze der agricultur-chemie mit Ru¨cksicht auf die in Englend angestellten Untersuchchungen. Friedrich Vieweg and Sohn, Braunschweig, Germany. All References: van der Ploeg, R.R., Bo¨hm, W., Kirkham, M.B. (1999). On the Origin of the Theory of Mineral Nutrition of Plants and the Law of the Minimum, Soil Sci. Soc. Am. J, 63, 1055--1062. Ågren, G., Martin Wetterstedt, J.A., & Billberger, M. (2012). Nutrient limitation on terrestrial plant growth -- modeling the interaction between nitrogen and phosphorus. New Phytologist, 194, 953--960. Farrior, C., Tilman, D., Dybzinski, R., Reich, P., Levin, S., & Pacala, S. (2013). Resource limitation in a competitive context determines complex plant responses to experimental resource additions. Ecology, 94, 11. Townsend, S., Schult, J., Douglas, M., & Skinner, S. (2008). Does the Redfield ratio infer nutrient limitation in the macroalga Spirogyra fluviatilis? Freshwater Biology, March, 509--520. http://www.ukaps.org/forum/threads/the-problem-with-the-redfield-ratio-theory.4921/ http://www.aquariumlife.com.au/showthread.php/17617-Redfield-ratio?s=4283a4f41f520e1be3ee163a94be4fe0 http://www.plantedtank.net/forums/showthread.php?t=68605 http://forum.practicalfishkeeping.co.uk/showthread.php?t=32981&page=4 http://www.aquariacentral.com/forums/showthread.php?229059-A-look-at-GH-and-magnesium/page4 http://www.aquariacentral.com/forums/showthread.php?255875-(Utricularia-grammifolia)-UG-and-EI-dosing http://www.ukaps.org/forum/threads/detailed-description-effects-of-n-p-and-k.28363/ http://www.aquariacentral.com/forums/showthread.php?229059-A-look-at-GH-and-magnesium http://www.aquascapingworld.com/threads/pmdd-and-calcium-chloride.5584/ http://www.aquaticplantcentral.com/forumapc/fertilizing/5005-pps-technical-discussion-thread-8.html http://www.barrreport.com/showthread.php/7140-Required-reading-Tropica-s-article-on-CO2-and-light http://www.fishforums.net/index.php?/topic/336801-the-redfield-ratio/ ------------------------------------ Music: http://www.jamendo.com/en/list/a99322/workbench-over Creative Commons : Attribution-Share Alike 3.0 Artist: Rama Druma Intro Song: Tango mafia Outro Song: Science Of Relationships
Views: 18015 NickMach007
Metabolism & Nutrition, part 1: Crash Course A&P #36
 
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Metabolism is a complex process that has a lot more going on than personal trainers and commercials might have you believe. Today we are exploring some of its key parts, including vital nutrients -- such as water, vitamins, minerals, carbs, fats, and proteins -- as well as how anabolic reactions build structures and require energy, while catabolic reactions tear things apart and release energy. Anatomy of Hank Poster: http://store.dftba.com/products/crashcourse-anatomy-and-physiology-poster -- Table of Contents Water, Vitamins, Minerals, Carbs, Fats and Proteins 3:47 Anabolic Reactions Build Structures and Require Energy 2:59 Catabolic Reactions Tear Things Apart and Release Energy 3:17 Metabolism 2:30 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark , Elliot Beter, Moritz Schmidt, Jeffrey Thompson, Ian Dundore, Jacob Ash, Jessica Wode, Today I Found Out, Christy Huddleston, James Craver, Chris Peters, SR Foxley, Steve Marshall, Simun Niclasen, Eric Kitchen, Robert Kunz, Avi Yashchin, Jason A Saslow, Jan Schmid, Daniel Baulig, Christian , Anna-Ester Volozh -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1206959 CrashCourse
What Is Salicylic Acid In Plants?
 
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Salicylic acid beyond defence its role in plant growth and. Sa mediates plant defense 16 apr 2013 moreover, salicylic acid plays exclusive role in growth, thermogenesis, flower induction and uptake of ions. Salicylic acid plant cell culture tested salicylic characteristics hormone theoryeditorial signaling networks roles of acid, jasmonic and ethylene in. Overview induced salicylic acid accumulation and response the phytohormone acid, 2 hydroxybenzoate (sa), a plant hormone plays an important role in induction of defense against variety biotic abiotic stresses through morphological, 23 mar 2017 (sa) is that regulates many aspects growth development, as well resistance to one hormone, whose function stress has been studied (vlot et al. Salicylic acid, a plant defense hormone, is specifically secreted by does anybody know negative effect of salicylic acid on plants? . Role of salicylic acid in induction plant defense system how does the multifaceted hormone combat abiotic stress and role plants springer link. Salicylic acid beyond defence its role in plant growth and salicylic defense. 28 feb 2011 in recent years salicylic acid (sa) has been the focus of intensive here, the evidence that supports the role of sa during plant growth and salicylic acid and plant defense. Salicylic acid physiological roles in plants (pdf download salicylic and disease resistance sciencedirect. It has the salicylic acid (sa) is implicated in induction of programmed cell death (pcd) sa does not induce hr like pcd on its own whole plants, although it may 22 jan 2014 citation kstner j, von knorre d, himanshu h, erb m, baldwin it, meldau s (2014) acid, a plant defense hormone, specifically 13 2015 e. Find product specific information including cas, msds, protocols and references a table of the characteristics salicylic acid, showing its chemical structure, when made effects exogenous application. Salicylic acid in plant defence the players and protagonists salicylic wikipedia. Degradation of the plant defense signal salicylic acid protects mbio. The role of salicylic acid in the induction cell plant physiology. Sigma aldrich offers sigma s7401, salicylic acid for your research needs. New jersey 08903 0231 salicylic acid (sa) is synthesised by plants in response to challenge a diverse range of phytopathogens and essential the establishment both local lipophilic monohydroxybenzoic acid, type phenolic beta hydroxy (bha). High concentrations of sa or interaction with abiotic stress factors and promoting its negative effect? Many authors indicate that has a salicylic acid biosynthetic pathway in plants two distinct pathways, the isochorismate (ic) phenylalanine ammonia lyase (pal) have evolved complex mechanisms to defend themselves against pathogens, thus great deal attention been directed towards elucidating 25 nov 2014 effects on plant growth testable question what effect does growth? Hypothesis hypothesis. Salicylic acid physiological roles in plants role of salicylic annu
Views: 316 Bet My Bet
Growth curve- Logistic and exponential growth Ecology NCERT
 
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Please watch: "HOW TO AVOID SILLY MISTAKES ON 6TH MAY -NEET EXAM" https://www.youtube.com/watch?v=5tOOAZQFwgU --~-- Ashwini Kumar MBBS 1st year student Banaras Hindu university
DIY - Homemade CO2 System for Indoor Marijuana Plants  -  EASY
 
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Hey guys! This is my tutorial on how to make your own homemade CO2 Redneck system. All I used was sugar and dry yiest, then I just add my water and shake it up. I use aquarium tubing and fittings to connect everything, and feed it to the fan. A good tip if your tubing is rolled up, to straighten it out put it in a pot of hot water, then remove it after a minute and stretch it out. Let me know if you have any questions! It works really great, your plants will benefit from having co2. This is what I use for my medical marijuana / cannabis closet grow.
Views: 156097 Northern AutoMan
Biochar - the future of sustainable agriculture: Lauren Hale at TEDxUCR
 
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Lauren Hale graduated with a Bachelors of Science from North Carolina State University in 2007. During her time there she studied the use of bacteria to degrade pollutants such as gasoline additives and chlorinated solvents. In 2009 she began a Ph.D. program at the University of California, Riverside where she currently researches the suitability of biochar to deliver plant growth-promoting bacteria into agricultural soils. When she completes her Ph.D. she hopes to continue to work with biochar and beneficial microorganisms and microbial generated enzymes of environmental significance. About TEDx: In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 113005 TEDx Talks
PLB 112-SENESCENCE
 
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References Jibran, R., Hunter, D. A., & Dijkwel, P. P. (2013). Hormonal regulation of leaf senescence through integration of developmental and stress signals. Plant Molecular Biology, 82(6), 547-561. doi:10.1007/s11103-013-0043-2 Li, Z., Peng, J., Wen, X., & Guo, H. (2012, August 23). Gene Network Analysis and Functional Studies of Senescence‐associated Genes Reveal Novel Regulators of Arabidopsis Leaf Senescence. Retrieved May 29, 2017, from http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7909.2012.01136.x/full McCabe, P. (n.d.). Senescence in Plants. Retrieved May 29, 2017, from http://www.els.net/WileyCDA/ElsArticle/refId-a0020133.html Ravenscroft, D. (n.d.). Plant Hormones and Senescence. Retrieved May 29, 2017, from http://www.plant-biology.com/leaf-senescence-hormones.php Woo, H. R., Kim, H. J., Nam, H. G., & Lim, P. O. (2013, November 01). Plant leaf senescence and death – regulation by multiple layers of control and implications for aging in general. Retrieved May 29, 2017, from http://jcs.biologists.org/content/126/21/4823 Khan M, Rozhon W, Poppenberger B, The Role of Hormones in the Aging of Plants - A Mini-Review. Gerontology 2014;60:49-55 Chang, M. "Programmed Cell Death, Aging, and Senescence in Plants." PowerShow. N.p., 11 Apr. 2012. Web. 31 May 2017. Koyama, Tomotsugu. "The Roles of Ethylene and Transcription Factors in the Regulation of Onset of Leaf Senescence." Frontiers. Frontiers, 03 Nov. 2014. Web. 31 May 2017. Reape, Theresa J., Elizabeth M. Molony, and Paul F. McCabe. "Programmed Cell Death in Plants: Distinguishing between Different Modes." Journal of Experimental Botany. Oxford University Press, 05 Feb. 2008. Web. 31 May 2017. Koratkar, Sanjay. "Abscission of Leaves in Plants (With Diagram)." Biology Discussion. N.p., 24 Feb. 2016. Web. 31 May 2017. Reich, Peter, and Henry Reich. "The Real Reason Leaves Change Color In the Fall."YouTube. YouTube, 24 Oct. 2015. Web. 31 May 2017.
Views: 145 Jose Cabrera
Dominique Bergmann (Stanford U / HHMI) 3: Stomata and global climate cycles
 
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https://www.ibiology.org/plant-biology/stomata/#part-3 Talk Overview: While mammals are protected by the mother’s womb during their most critical development, plants are exposed to the environment for most of their development. To survive, plants have developed strategies such as the ability to grow new tissue and regenerate tissue lost to predators. New leaves, stems and flowers are derived from the shoot apical meristem while roots come from the root apical meristem. Meristems are the source of pluripotent stem cells for all plant growth. Bergmann explains that because plants can live for a very long time and are constantly regenerating they are an excellent system for improving our understanding of stem cells. In Part 2, Bergmann focuses on the stem cells that give rise to the epidermis of the plant. These stem cells give rise to two distinct sets of cells. Pavement cells form an impermeable layer that “waterproofs” the plant. Stomata are small pores on the plant surface formed by two cells that act as a valve to regulate the uptake of CO2 and the release of oxygen and water. Bergmann’s lab used confocal microscopy to follow stem cells from their “birth”, through a series of asymmetric divisions to their eventual differentiation to pavement cells or stomata. At the same time, they measured how active or inactive all genes in the plant were at the different stages. Using chromatin immunoprecipitation, they were able to identify key genes involved in determining and maintaining cell fate decisions. Interestingly, similar genes and mechanisms may influence cell fate decisions in animals. In her last talk, Bergmann discusses the impact of plant physiology on the Earth’s climate and the impact of climate on plant physiology. Since stomata regulate CO2 uptake and oxygen and H2O release, their function impacts global climate change. The number of stomata a plant has increases and decreases in response to many factors including CO2 concentration, light, and temperature and stomata can open and close in response to the same cues. Bergmann and her colleagues studied plants with different numbers of stomata that were grown in controlled climates to get a better understanding of stomatal behavior in response to changes in climate. Knowing these details may contribute to improving the accuracy of global climate models. Related Articles (to open on a separate page from Resources link under the video window): Matos JL, Lau OS, Hachez C, Cruz-Ramírez A, Scheres B, Bergmann DC (2014) Irreversible fate commitment in the Arabidopsis stomatal lineage requires a FAMA and RETINOBLASTOMA-RELATED module. Elife. 2014 Oct 10;3. PMID: 25303364 Lau OS, Davies KA, Chang J, Adrian J, Rowe MH, Ballenger CE, Bergmann DC (2014) Direct roles of SPEECHLESS in the specification of stomatal self-renewing cells. Science 2014 Sept; PMID: 25190717 Dong J, Macalister CA, Bergmann DC (2009) BASL Controls Asymmetric Cell Division in Arabidopsis. Cell. 2009 Jun 26;137(7):1320-30. PMID: 19523675 Key reviews: Dow GJ, Bergmann DC (2014) Patterning and processes: how stomatal development defines physiological potential. Curr Opin Plant Biol. 2014 Jul 21;21C:67-74. PMID: 25058395 Matos JL, Bergmann DC (2014) Convergence of stem cell behaviors and genetic regulation between animals and plants: insights from the Arabidopsis thaliana stomatal lineage. F1000Prime Rep. 2014 Jul 8;6:53. PMID: 25184043 Lau OS, Bergmann DC (2012) Stomatal development: a plant’s perspective on cell polarity, cell fate transitions and intercellular communication. Development 139(20):3683-92. PMID: 22991435 Vatén A, Bergmann DC (2012) Mechanisms of stomatal development: an evolutionary view. Evodevo 3(1):11. PMID: 22691547 Speaker Biography: Dominique Bergmann completed her BA in molecular and cellular biology at the University of California, Berkeley. Bergmann studied development in C. elegans as a PhD student at the University of Colorado at Boulder, but switched her focus to development in Arabidopsis while a post-doc at the Carnegie Institution, Department of Plant Biology. Moving to Carnegie’s neighbor, Stanford University, Bergmann set up her own lab in 2005, and continues to study Arabidopsis. Currently, her work focuses on specialized structures called stomata and the role of asymmetric cell division and cell-cell communication in their formation. Bergmann is currently an associate professor at Stanford University and a Howard Hughes Medical Institute and Gordon and Betty Moore Foundation Investigator. She is also an associate of the Stanford Institute for Stem Cell Biology and Regenerative Medicine and The Carnegie Institute, Department of Plant Biology.
Views: 3111 iBiology
Z. Rocio Suarez - Plant-growth promotion and biocontrol properties of Colombian Streptomyces...
 
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Zulma Rocio Suarez Instituto de Biotecnología, Universidad Nacional de Colombia, Bogotá, COLOMBIA speaks on "Plant-growth promotion and biocontrol properties of Colombian Streptomyces spp. isolates to reduce bacterial diseases of Rice". This seminar has been recorded by ICGEB Trieste
Views: 70 Icgeb
Basics of Metabolism
 
11:05
These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. More free lessons at: http://www.khanacademy.org/video?v=wQ1QGZ6gJ8w
Views: 971641 khanacademymedicine
#1 - Introduction - Plant Growth and Development - J N Singh NEET AIIMS NEET AIIMS
 
04:26
I created this video with the YouTube Video Editor (http://www.youtube.com/editor) NEETPrep platform is now offering free 20 minute tests so that you can find out whether you will get into Government Medical Colleges in NEET 2018. Following is the criteria: a) More than 16 questions correct out of 20: Selection General & OBC Category b) More than 12 questions correct: Selection SC & ST Category FIND OUT RIGHT NOW. 17 tests of 20 minute duration are now available at http://www.neetprep.com/course/Q291cnNlOjMx/tests Call us at 8586047614 if you have any questions.
Views: 1478 NEETprep
How Temperature affects Growth
 
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Can an oxygen perspective explain the effects of temperature on growth? Breathing under water is challenging, making it potentially difficult for ectotherms to meet their higher oxygen demand in warmer waters. This animation explains how an oxygen perspective helps to explain why temperature may differently affect small and large animals, providing an explanation for the temperature-size rule. In a previous animation we showed that the balance between oxygen supply and demand changes as animals grow (see http://www.youtube.com/watch?v=QCskh6NVa7U ). Ecology: An oxygen perspective to temperature effects on growth | Concept and Text - Wilco Verberk - http://aquaticecology.nl | Further reading - http://dx.doi.org/10.1016/j.jtherbio.2014.12.003 | Animation - DaanDirk|Visuals - http://daandirk.com
Views: 2185 Wilco Verberk
Mold/Biotoxin Illness & Autism: Focus on Endocrine Hormonal Imbalance, Immune Dysregulation...
 
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FULL TITLE: Mold/Biotoxin Illness & Autism: Focus on Endocrine Hormonal Imbalance, Immune Dysregulation, & Recovering the Pituitary systemic Axis Patients prone to developing CIRS Mold/Biotoxin illness fail to mount an effective immune response to biotoxins. When this happens, the innate immune system shows signs of continuous but ineffective activation. Fatigue, often due to low or dysregulated cortisol and ACTH, and poor conversion of the thyroid hormones T4 to T3. Pain – due to inflammation and reduced endorphin production is seen. Chronic sleep disorders with non-restful, nonrestorative sleep – at least in part due to low melatonin levels, Appetite swings, particularly increased appetite, leading to weight gain,Loss of control of regulation of body temperature, Imbalanced sex hormones, and approximately 60% have low ADH / imbalanced osmolality. Dysregulated inflammation compounds called cytokines are also seen due to a loss of inflammatory regulation.There is increased intestinal permeability (aka leaky gut) due to increased space between intestinal gap junctions. This can then lead to development of antibodies to gluten / gluten intolerance in the absence of Celiac disease. Microbes can overgrow in an inflammed milieu. Dr Dashore will discuss the hormonal imbalances in depth, growth issues seen, immune dysregulation mechanisms and best all natural plant-based treatment options along with conventional alternatives. Jodie A. Dashore, OTD, HHP, BCIP
Views: 324 AutismOne Media
Marcelo J  Yanovsky - Regulatory Networks Controlling Daily and Seasonal Rhythms in Plants
 
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Conferencia del XV Congreso Latinoamericano de Fisiología Vegetal - XXX Reunión Argentina de Fisiología Vegetal Mar del Plata, Argentina, 23/09/2014 Regulatory Networks Controlling Daily and Seasonal Rhythms in Plants YANOVSKY Marcelo J. Instituto de Investigaciones Bioquímicas de Buenos Aires,Fundación Instituto Leloir-CONICET, Argentina . * [email protected] Circadian clocks allow organisms to time biological processes to the most appropriate phases of the day and year. We are interested in deciphering the regulatory networks that control clock function in plants, since this knowledge could be used to manipulate flowering time, a key factor influencing crop productivity. Combining functional genomics and a reverse genetics approach we have identified novel regulatory components acting at either transcriptional or post-transcriptional levels to control the pace of the plant circadian clock. First, I will describe the identification of a novel family of light induced genes that control the pace of the clock acting as transcriptional co-activators of known core-clock components. Then, I will describe recent work in our laboratory that revealed novel components linking the regulation of alternative splicing to the plant circadian clock.
Bodybuilding for the brain: John Pelley at TEDxTexasTechUniversity
 
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John attempts to show his audience how action and sleep are used to build a strong brain as well as a strong body. Bodybuilding requires action for muscular growth and the growth occurs during sleep. Similarly, learning requires action for the physical growth of brain cells and this also occurs during sleep. Active learning experiences (sketching, organizing, discussing, etc.) are needed for the brain to replay them during sleep and that action must also be associated with emotion, if either the exercise routine or the learning experience is to be effective. Brain cells develop a temporary record of our experiences during the day but we don't make that record permanent until we sleep. As we replay our experiences during sleep, only those with emotional value are retained, or consolidated, into memory. This can be seen physically in the development of a network of branched connections between brain cells, called dendritic trees. Muscle cells grow, brain cells grow. The audience will be shown how to apply action and sleep to employ bodybuilding for the brain. In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 67527 TEDx Talks
Seachem  neutral regulator in a planted aquarium
 
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High phosphate levels and black beard algae
Views: 3149 J flanman
What is ANTITRANSPIRANT? What does ANTITRANSPIRANT mean? ANTITRANSPIRANT meaning & explanation
 
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What is ANTITRANSPIRANT? What does ANTITRANSPIRANT mean? ANTITRANSPIRANT meaning - ANTITRANSPIRANT definition - ANTITRANSPIRANT explanation. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Antitranspirants are compounds applied to the leaves of plants to reduce transpiration. They are used on Christmas trees, on cut flowers, on newly transplanted shrubs, and in other applications to preserve and protect plants from drying out too quickly. They have also been used to protect leaves from salt burn and fungal diseases. They block the active excretion of hydrogen cation from the guard cells. Due to presence of carbon dioxide, a rapid acidification of cytoplasm takes place leading to stomatal closure. Milbarrow(1974) has described the formation of these chemicals in the chloroplast. It moves to the stomata, where it is responsible for checking the intake of Potassium ion or induses loss of potassium ion from the guard cells. Antitranspirants are of two types: metabolic inhibitors and film-forming antitranspirants. Metabolic inhibitors reduce the stomatal opening and increase the leaf resistance to water vapour diffusion without affecting carbon dioxide uptake. Examples include phenylmercury acetate, abscisic acid (ABA), and aspirin. Film-forming antitranspirants form a colorless film on the leaf surface that allows diffusion of gases but not of water vapour. Examples include silicone oil, waxes.
Views: 185 The Audiopedia
Boiling Water in a Bull Kelp Float
 
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Testing a natural container made of Seaweed in the Pacific Northwest ! It's a technique I've seen on Discovery Channel's Dual Survival show. In season 5 the episode is called ''Coastal Catastrophe''. Matt uses a bull kelp container to collect rainwater and , around 50 minutes in, Matt and Joe use these containers to cook there fish. I want to see how well these bull kelp containers hold water and see if I can get water boiling over a fire. Bull Kelp is huge it has a single stem called a stipe (comparable to a tree trunk i guess), that grows 36 meters long in a single year. It's known to be the fastest growing plant on earth it grows on average 17cm per day. The stipe or stem reaches the surface of the water and grows a float that's averaged 4 to 6 inches in diameter. This float contains carbon monoxide which allows it to float and reach surface, from here the long narrow leaves called blades can catch sunlight. The float is the part that I am interested in, once cut, it's shape makes it a perfect container. Please note this is an amazing plant and it is protected in many areas. You cannot gather it in the water when it is vertical or growing and living. Here, It is washed up on shore in a bundle, it has already reproduced and it is now dead and will slowly begin rotting away. So, I am NOT harming the plant in any means by gathering it. You cannot gather it in the water when it is vertical/growing and living. Always follow local regulations and ask questions to authorities before you do anything. If you gather wild edibles make sure you are 100 % sure of your identification, use many sources of information, not just a video or a book. With Kelp, don't use rotting plants, try to find some that are fresh but don't cut them when they are in the water, or alive as a stated earlier. If you'd like to see more videos like this make sure you like and comment. Also subscribe so you don't miss any new videos i make. Thanks guys ! Have a good day and always be safe out there ! Music : Lana Del Rey, West coast (instrumental). Twitter : https://twitter.com/NomadicWoodsman Sous-titre en français disponible ! Un petite test pour voir si je peux bouillir de l'eau dans un Bull Kelp ! J'ai vu cette idée dans Dual Survival.
Views: 2935 Nomadic Woodsman
David Lobell: Water use efficiency in agriculture
 
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David Lobell believes Australia can teach the world a lot about water use efficiency in agriculture. Australian cropping practices emphasise drought resilience over high-yielding but water-hungry crops; this focus will become more relevant to world agriculture as climate change makes the world's weather more erratic. David Lobell is from the Standord University Centre on Food Security and Environment.
Views: 1344 ANU TV
Testosterone and Human Growth Hormone
 
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Testosterone, Human Growth Hormone Dr. J Wright & Holly Wright For great hormone balancing supplements, go to http//:unitynaturals.com 0:16 When was Holly Wright introduced to bio-identical hormones? 0:34 She planned her menopausal treatment well in advance 1:07 In modern times, hormone therapy started in the US 1:42 Dr. Delgado's own introduction to Human Growth Hormone 2:10 Nick's testosterone levels optimized soon after starting his' own treatment 2:41 Holly started with triple-estrogen 3:09 Women get testosterone as well as men 3:38 Let us know more about women who need testosterone... 4:26 Is there a bias against giving women testosterone? 4:42 Testosterone or other androgens frequently drive libido and sex drive 4:59 Women need testosterone to boost muscle mass and avoid becoming weak 5:53 Holly's results from hormone therapy 6:25 Holly's skin has benefited from hormone therapy This channel is to educate people all around the world about the power of nutrition, fitness, hormones and the power of the mind. ========================================­=== **Click Below to SUBSCRIBE for More Videos: http://youtube.com/subscription_center?add_user=https:DelgadoVideo ======================================= Dr. Nick Delgado Health and Anti-Aging Coach http://www.unitynaturals.com
Views: 1171 Dr. Nick Delgado
Rethinking DNA as a blueprint for development | J. Andrew Pospisilik
 
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What makes identical twins identical? Genetics is not everything – indeed, studies with mice suggest it is more malleable than has previously been thought. J Andrew Pospisilik, of the Max Planck Institute of Immunobiology and Epigenetics, explains what this new understanding implies for unlocking human potential. http://www.weforum.org/
The Werewolf Gene
 
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Support Brilliant Botany on Patreon: http://www.patreon.com/brilliantbotany What do werewolves have to do with plants? Today we discuss the werewolf gene in Arabidopsis thaliana and how it affects root hair development. Brilliant Botany is an educational STEM channel focused on inspiring enthusiasm about the plant world. The channel features videos highlighting topics in current research, the fundamentals of plant science and tutorials. http://www.brilliantbotany.com Twitter: @brilliantbotany Have a question about the video, or anything botany-related? Post it in the comments and I'll answer it in a future video. Sources: Laitinen, R. A. E. (2015). Molecular Mechanisms in Plant Adaption. Wiley. Lee, M. M., & Schiefelbein, J. (1999). WEREWOLF, a MYB-related protein in Arabidopsis, is a position-dependent regulator of epidermal cell patterning. Cell, 99(5), 473–483. Song S. K. et al. (2011). Cell fate in the Arabidopsis root epidermis is determined by competition between WEREWOLF and CAPRICE. Plant Physiology, 157(3), 11196-208. Images: https://commons.wikimedia.org/wiki/File:NSRW_Root-Tip.png https://commons.wikimedia.org/wiki/File:Arabis_thaliana_Sturm6.jpg https://commons.wikimedia.org/wiki/File:Mycorhizae_fungus_(10333483254).jpg https://commons.wikimedia.org/wiki/File:WeirdTalesv36n2pg038_The_Werewolf_Howls.png
Views: 1093 Brilliant Botany
The Future of Medical Hemp | August 2018
 
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Getting together at The Future of Medical Hemp Summit in late August. What we found: Despite significant institutional challenges, the European CBD market will see strong growth for those companies that can navigate the murky waters of EU regulation while managing growth in a fast moving industry. https://hemptoday.net/cbd-summit-findings/
Views: 109 Hemp Today

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