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Topic: Plant growth substance

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Plant hormone

Brassinosteroids

Gibberellin

Germination

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	Auxin - Wikipedia, the free encyclopedia
		Their transport throughout plants is complex, and often they also control action of other plant hormones.
		Growth and division of plant cells results in growth of tissue and specific tissue growth contributes to the development of plant organs.
		An important principle of plant organization based upon auxin distribution is apical dominance, which means that the auxin produced by the apical bud (or growing tip) diffuses downwards and inhibits the development of ulterior lateral bud growth, which would otherwise compete with the apical tip for light and nutrients.
	en.wikipedia.org /wiki/Auxin (1136 words)

	The International Plant Growth Substance Association
		The object of the Association is to promote the development of the study of plant growth substances at the international level.
		IPGSA facilitates publication of matters relating to the study of plant growth substances.
		Membership is open to all those actively engaged in or interested in the study of plant growth substances or related topics.
	www.ipgsa.org (79 words)

	AiroCide, Ethylene Atmosphere Control, Controlled Ethylene, Food Safety, Mold Control, Fungus Control, Bacteria ... (Site not responding. Last check: 2007-10-14)
		Ethylene is involved in a plant's growth process from seed germination to its eventual death.
		Ethylene is a gaseous plant growth substance which has been shown to be involved in numerous aspects of plant growth and development - from seed germination through senescence and death of the plant.
		In a natural setting, when a plant is growing in the earth, the ripening process is triggered when the internal ethylene concentration of a plant's fruit is 0.1-1 ppm.
	www.kesmist.com /airborne_path/11_ethylene_gas.htm (1078 words)

	[No title]
		It is obvious that the mechanism is in the primary action of the growth substance by binding with an intermediate effect of influencing protein conformation of turgor changes (or trigger some process that takes some time to occur before a visible event is caused.
		A plant growth substance might induce or repress the synthesis of the various RNA molecules on the DNA template.
		This operates at the transcriptional level or the growth substance might interact with one of the RNA’s in a manner to facilitate or inhibit protein synthesis.
	webhome.crk.umn.edu /~MMATTSON/3034PGRMODE1.doc (991 words)

	AllRefer.com - growth hormone (Biochemistry) - Encyclopedia (Site not responding. Last check: 2007-10-14)
		growth hormone or somatotropin[sOmat´´utrO´pun] Pronunciation Key, glycoprotein hormone released by the anterior pituitary gland that is necessary for normal skeletal growth in humans (see protein).
		Evidence suggests that the secretion of human growth hormone (HGH) is regulated by the release of certain peptides by the hypothalamus of the brain.
		HGH is known to act upon many aspects of cellular metabolism, but its most obvious effect is the stimulation of the growth of cartilage and bone in children.
	reference.allrefer.com /encyclopedia/G/growthho.html (183 words)

	Plants and the Effects of pH
		The pH of soil is important for the growth of plants.
		Plants can be effected greatly by the water or substance being used to water it.
		Although the plants were the same type and height they each grew very differently because of the substance and its pH that i was using to water each plant.
	angel-patti03.tripod.com /id3.html (458 words)

	PENNSYLVANIA FERTILIZER, SOIL CONDITIONER AND PLANT GROWTH SUBSTANCE LAW
		means any substance containing nitrogen, phosphorus, potassium or any recognized plant nutrient, element or compound which is used or sold for its plant nutrient content, or claimed plant nutrients, or for compounding mixed fertilizers except unmanipulated animal and vegetable manures.
		means any sample of fertilizer, soil conditioner or plant growth substance taken by the secretary to effect the provisions of this act.
		It shall be unlawful to distribute a misbranded fertilizer, soil conditioner or plant growth substance.
	home.att.net /~judiciary/03U/3Cp3a.html (953 words)

	pgr (Site not responding. Last check: 2007-10-14)
		The title of this lecture is "Plant Growth Regulators" which refers to compounds that regulate plant growth and development.
		For each of the six classes of plant growth substances be sure to be able to provide an example of a physiological response which they regulate, synthetic and naturally occurring forms and key people involved in their discovery.
		For each of the six classes of plant growth substances the history involved in their discovery and specific physiological processes in which they have key roles will be discussed.
	hortweb.cas.psu.edu /courses/hort101/pgr.html (489 words)

	Arteca - Research Projects Part 1
		Plants are continually exposed to touch in a variety of ways from a seedling making its way through the soil to exposure to wind, precipitation and rubbing of plant parts against one another.
		Ethylene is a plant growth substance which is produced in all higher plants and is involved in numerous aspects of plant growth, development and senescence.
		Brassinosteroids are widely distributed within higher plants and are capable of modifying plant growth and development in many different plant tissues at extremely low concentrations (one billionth of a gram).
	hortweb.cas.psu.edu /dept/arteca/resA.html (1515 words)

	NE States' Fertilizer Regulaitons (Site not responding. Last check: 2007-10-14)
		Commercial fertilizer means any substance containing one or more recognized plant nutrients which is used for its plant nutrient content and which is designed for use or claimed to have value in promoting plant growth, except unmanipulated animal and vegetable manures, marl, lime, limestone, wood ashes, and gypsum.
		Fertilizer means any substance containing one or more recognized plant nutrients which is used for its plant nutrient content and which is designed for use or claimed to have value in promoting plant growth, except unmanipulated animal and vegetable manures, marl, lime, limestone, wood ashes and other products exempted by rule by the commissioner.
		Fertilizer means any substance containing one or more recognized plant nutrients which is used for its plant nutrient content and which is designed for use or claimed to have value in promoting plant growth or health, except unprocessed animal or vegetable manures and other products exempted by the commissioner.
	www.nerc.org /documents/2001-fertilizer-regulations-summary.html (861 words)

	Archived: Plants (Site not responding. Last check: 2007-10-14)
		Plants are the only things on earth that turn sunlight into food.
		Plants use sunlight to turn carbon dioxide from the air, and water into food.
		When the plant gets enough of these things, it produces a simple sugar, which it uses immediately or stores in a converted form of starch.
	www.ed.gov /pubs/parents/Science/plants.html (338 words)

	Chapter 15 (16) Role of Hormones in Plant Development
		In Plants: Hormone production is not as localized and is not necessarily sent from one tissue or organ (or even cell) to a far-removed target tissue in another part of the plant.
		Plant hormones seem to be much less specific in their effects (i.e.
		Important for plant physiologists to not be overly influenced by animal studies.
	www.sonoma.edu /users/c/cannon/bio334chapter15.html (460 words)

	Ecological Engineering Group
		Plants can accelerate bioremediation in surface soils by their ability to stimulate soil microorganisms through the release of nutrients from and the transport of oxygen to their roots.
		Plants sustain large microbial populations in the rhizosphere by secreting substances such as carbohydrates and amino acids through root cells and by sloughing root epidermal cells.
		Plants are effective at remediating soils contaminated with organic chemical wastes, such as solvents, petrochemicals, wood preservatives, explosives and pesticides.
	www.ecological-engineering.com /defs.html (5940 words)

	Sunhee Lee 2004 5384
		In higher plants and most microorganisms, the indole-3-pyruvic acid (IpyA) pathway is the main one for IAA synthesis, whereas other pathways operate in certain species (the indole-3-acetamide pathway, the tryptamine pathway, and the indole-3-acetonitrile pathway).
		Improved plant growth via plant-associated bacterial nitrogen fixation has been reported in many plant-microbe interactions (reviewed in references 38 and 45).
		High concentrations of IAA can be detrimental to plant growth, since it results in the inhibition of root growth and enlargement of plant cells, causing plant tumors (33).
	www.bionewsonline.com /i/l/sunhee_lee_2004_5384.htm (4552 words)

	Books (Site not responding. Last check: 2007-10-14)
		To date, this book is use of the most complete compilation of plant growth regulators ever published in Chinese.
		This reference book is intended for plant managers of companies producing growth regulators, research investigators and technicians, Government officials in agricultural technology and personnel attending agricultural extension classes.
		It is also an excellent reference source for advanced students learning about plant growth regulators.
	www.ltbiosyn.com /books.php (141 words)

	Gibberellin - Wikipedia, the free encyclopedia
		Gibberellins are a plant growth substance (phytohormone) involved in promotion of stem elongation, mobilisation of food reserves in seeds and other processes.
		Its absence results in the dwarfism of some plant varieties.
		Chemically all known gibberellins are gibberellic acids, a family of diterpene acids that are synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically active form.
	en.wikipedia.org /wiki/Gibberellins (330 words)

	Gravitropism Terms and Definitions at www.MedicalGlossary.org
		The directional growth of organisms in response to gravity.
		In plants, the main root is positively gravitropic (growing downwards) and a main stem is negatively gravitropic (growing upwards), irrespective of the positions in which they are placed.
		Plant gravitropism is thought to be controlled by auxin (AUXINS), a plant growth substance.
	www.medicalglossary.org /tropism_gravitropism_definitions.html (172 words)

	[No title]
		Active transport • The transport of a substance across a biological membrane against a concentration gradient—that is, from a region of low concentration (of that substance) to a region of high concentration.
		Allometric growth • A pattern of growth in which some parts of the body of an organism grow faster than others, resulting in a change in body proportions as the organism grows.
		Apical dominance • Inhibition by the apical bud of the growth of axillary buds.
	www.whfreeman.com /thelifewire6e/content/xfx_menu.htm (2535 words)

	Plant graviperception and gravitropism: a newcomer's view -- RANJEVA et al. 13 (9001): 135 -- The FASEB Journal
		Concerning auxin, it is known that this plant growth substance influences
		be the causative factor of the asymmetric growth for curvature
		Baluska, F., Hauskrecht, M., Barlow, P. W., Sievers, A. (1996) Gravitropism of the primary root of maize: a complex pattern of differential cellular growth in the cortex independent of the microtubular cytoskeleton.
	www.fasebj.org /cgi/content/full/13/9001/S135 (4177 words)

	Gibberellin - definition from Biology-Online.org (Site not responding. Last check: 2007-10-14)
		A plant hormone isolated from a fungus; used in promoting plant growth.
		A plant substance that promotes meristematic growth at the root and shoot tips, dithering from auxins which inhibit root growth in high concentrations.
		(Science: protein) Plant growth substance (phytohormone) involved in promotion of stem elongation, mobilisation of food reserves in seeds and other processes.
	www.biology-online.org /dictionary/Gibberellin (66 words)

	LAND RECYCLING AND ENVIRONMENTAL REMEDIATION STANDARDS ACT
		A substance defined as a fertilizer, soil conditioner or plant growth substance under the act of May 29, 1956 (P.L.1795, No.598), known as the Pennsylvania Fertilizer, Soil Conditioner and Plant Growth Substance Law, or a substance regulated under the act of March 1, 1974 (P.L.90, No.24), known as the Pennsylvania Pesticide Control Act of 1973.
		The concentration of a regulated substance determined by appropriate statistical methods that is present at the site, but is not related to the release of regulated substances at the site.
		To clean up, mitigate, correct, abate, minimize, eliminate, control or prevent a release of a regulated substance into the environment in order to protect the present or future public health, safety, welfare or the environment, including preliminary actions to study or assess the release.
	members.aol.com /StatutesP9/35.Cp.29I.1.html (2020 words)

	Jim's Plant Growth Stimulator Additives
		It was first discovered in Japan, in 1935 as a result of the study of a condition common in rice plants called "foolish seedling" disease, which caused the plants to grow much taller than normal.
		to stimulate plant growth and allow the plant to absorb food from the soil quicker and also assimilate micronutrients that they may not normally be able to absorb due to various soil conditions.
		Each type of plant benifits from variations of micronutrients, (that is why we have made so many different varieties of Plant Growth Stimulators), so we've added Boron (B), Copper (Cu), Iron (Fe), Manganese (Mn), Molybdenum (Mo), Sulfer (S) and Zinc (Zn) in proportions best suited for the type of plant the solution is prepared for.
	www.seedman.com /additive.htm (658 words)

	AN ACT CONCERNING PESTICIDE STORAGE (Site not responding. Last check: 2007-10-14)
		a substance or mixture of substances intended (a) to prevent, destroy, repel or mitigate any pest, or (b) for use as a plant regulator, as defined by law, or as a defoliant or desiccant, that is used in or around household premises in lawn, garden and ornamental sites or areas, and
		A desiccant is any substance or mixture of substances intended to dry out plant tissue.
		A plant regulator is a substance or mixture of substances intended to speed up or slow down plant growth, or to otherwise alter plant behavior.
	www.cga.ct.gov /2003/ba/2003HB-06547-R000448-BA.htm (209 words)

	Botany and Plant Science Fair Projects and Experiments
		The effect of acid rain on plant growth and germination.
		The effect of radiation (x-rays) on the germination and growth of plants.
		The effect of the temperature of the water that is given to radishes on their growth.
	www.juliantrubin.com /plantprojects.html (1923 words)

	Auxins - free-definition (Site not responding. Last check: 2007-10-14)
		Auxins are a group of plant growth substances (often called phytohormones or plant hormones), the most common example being indoleacetic acid (IAA), responsible for raising the pH around cells, making the cell wall less rigid and allowing elongation.
		Commercially, auxins are used to promote root growth, to promote uniform flowering, and to set fruit and prevent premature fruit drop.
		The defoliant Agent Orange was a mix of 2, 4-D and 2, 4, 5-T. 2, 4-D is still in use and is thought to be safe, but 2, 4, 5-T was more or less banned by the EPA in 1979.
	www.free-definition.com /Auxin.html (423 words)

	plant growth (Site not responding. Last check: 2007-10-14)
		Terrestrial Plant Growth Chambers Plant Biotechnology Research Terrestrial Plant Growth Chamber A family of terrestrial plant chambers for a wide variety of biotechnology research are available...
		PLANT GROWTH REGULATORS A field of wheat treated with BETTAQUAT B Plant Growth Regulators The main use of plant growth regulators is on cereal crops and the oldest, and widest used, active ingredient...
		A tropism is plant growth toward or away from a directional stimulus.
	www.plantsall.com /plantgrowth (1267 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		The collection of chapters, written by renowned plant biologists, describe how classic discoveries were made and how they have served as the foundation for subsequent discoveries.
		The contributors, many of whom are themselves the researchers who made the discoveries, bring readers back in time to retrace the steps of the discoveries.
		Following the creative thoughts of the scientists in deciphering the natural laws, readers may appreciate how each field was developed from a simple subject to an advanced multidisciplinary field.
	www.worldscibooks.com /lifesci/1952.txt (195 words)

	Terminology (Site not responding. Last check: 2007-10-14)
		Phytohormone - A naturally occurring, organic substance that, at low concentration, exerts a profound influence on plant physiological processes.
		Plant Growth Substance - A substance that, at low concentration, exerts a profound influence on physiological processes.
		Plant Growth Regulator - A synthetic substance that, at low concentration, exerts a profound influence on physiological processes.
	www.tamu-commerce.edu /agscience/clasnote/pls381/ch9a/tsld002.htm (54 words)

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