ABA (abscisic acid, aba) Means can cause bud dormancy, leaf shedding and inhibiting growth and other physiological role of plant hormones. ABA is defined: is a kind of plant hormone abscisic acid sesquiterpene structure. 1963 United States Endicott et purification of a substance from the bolls of cotton seedlings can significantly promote the petiole explants off, called off prime ii.韦尔林 purification of a substance, such as the United Kingdom but also pieces from maple leaves under short-day conditions, deciduous trees can control sleep, called sleep hormone. 1965 confirmed that the prime ii off and sleep hormone for the same substance, unified named ABA. References: << Soledad Bio >> ABA has the following physiological effects: 1. Promote shedding From the name of the ABA found that accelerate plant organs is an important physiological role in shedding the aba. About aba cause leaf, flower and fruit shedding problem, there are different views. addicott (1982) as one of the discoverers aba, according to a large number of facts considered endogenous aba promote shedding effect is positive. But as a defoliant used aba field trials have not yet succeeded. This may be due to the leaves iaa, ga and ctk have off_set_ting effects on the aba. milborrow (1984) considered exogenous aba can cause loss, but lower than that of the role of exogenous ethylene. osborne (1989) in the comments when you come off ethylene and aba effect on the conclusions, aba may not have a direct role in the off side, but only cause premature aging organ cells, followed by stimulation caused increase in ethylene production falling, falling real Process initiator instead of ethylene aba. aba biological test method, commonly used bean leaves (or cotton leaf) shedding method (Figure 7-18), will be the test substance lanolin ointment in opposite petiole stump observed shedding rate. In addition, oats or wheat coleoptile elongation suppression methods and cut into sections. 2 inhibits the growth of aba is a strong growth inhibitor can inhibit the growth in vitro of whole plants or organs. effect on growth and iaa, ga and ctk Instead, inhibition of cell elongation split it from aba with. It inhibits coleoptile, twigs, roots and hypocotyl elongation and other organs. 3. Promote sleep Short days in the fall, the leaves of many woody plants aba content increases, promote bud into hibernation. Aba applied to the vigorous growth of these small branches of woody plants, can cause bud dormancy. Dormant buds potato also contains more aba. Thus, treatment of potato aba used to extend the dormancy. Pine, peach, chestnut, maple and other dormant seeds contain more aba. After months of cold stratification, seeds aba content decreased germination rate increased significantly. But aba level of content, not necessarily the direct cause of seed dormancy. Aba high content of red pine seed crust. After washing aba content decreased significantly, but the germination rate is still very low. Further analysis aba content Yunnan pine, pine, pine, whitebark pine seeds, pine seeds found aba Some content is higher, but not the performance of sleep. For example, non-dormant seeds of Pinus armandii content aba aba content than red pine seed dormancy about 10 times. Lettuce, radish seed germination, etc., but also by aba suppressed. 4 causes stomatal closure Under dry conditions, the leaves of plants aba content increased, causing stomatal closure. This is due to the aba k + guard cells induce extravasation, cell dehydration make stomatal closure. Aba sprayed with an aqueous solution of plant leaves, stomatal closure can reduce the transpiration rate. Therefore, aba as Antitranspirant. 5 Adjust the seed embryo development In recent years, noted that during the seed embryo development, endogenous aba as a positive regulatory factor plays an important role (quatranol987; rajasekeran et al, 1987). Endogenous aba normal embryo can inhibit the premature maturation and germination. In immature embryo culture, exogenous aba can cause accelerated the formation of certain special storage protein; such as lack of aba, these embryos or can not synthesize these proteins, or the formation of very little. This suggests that early seed development, aba mid-level control of the accumulation of storage proteins. aba also controls whether the accumulation of the developing embryo starch and fat, is a matter to be studied. In addition, aba also serve as plant defense salt damage, heat damage, chilling substance, which may prompt it to generate a new plant stress proteins. aba also promote some of the fruit (such as apples) of differentiation, and prompted some short-day plants (such as black currant) flowering under long-day conditions. Is a kind of plant hormone abscisic acid sesquiterpene structure. 1963 United States Endicott et purification of a substance from the bolls of cotton seedlings can significantly promote the petiole explants off, called off prime ii.韦尔林 purification of a substance, such as the United Kingdom but also pieces from maple leaves under short-day conditions, deciduous trees can control sleep, called sleep hormone. 1965 confirmed that the prime ii off and sleep hormone for the same substance, unified named ABA. ABA In many parts of the leaf tissue of aging, ripe fruit, seeds and stems, roots or the like. ABA can promote the formation of water deficit. ABA Soon, the presence of phloem and xylem sap flow in plants before redistribution speed. ABA is synthesized precursor mevalonic acid, after which there are two farnesyl pyrophosphate generated path. One direct way c15 common fungus. First, higher plants c40 indirect way. The latter formed first carotenoids (violaxanthin), by light or biological oxidation and oxidative cleavage of the yellow pigment c15, and then converted to abscisic acid. Abscisic acid binding by oxidation and is metabolized. ABA can stimulate ethylene production, ripening urging it inhibits the synthesis of DNA and proteins. ABA physiological functions are the following: 1 inhibition and promote growth. Inhibit the growth of stems, hypocotyls, roots, leaves coleoptile or exogenous abscisic acid concentration is large. Shique promote low concentrations in vitro rooting cucumber hypocotyl elongation and accelerate duckweed breeding, seed development to stimulate parthenocarpy. 2. Maintain bud and seed dormancy. Sleep and balance the body on GA and ABA. 3. Promote fruit and leaf shedding. 4. Promote stomatal closure. ABA can quickly closed stomata, nor toxic to plants, is a good Antitranspirant. ABA concentration in a biological test test method that is floating in vitro leaf epidermal surface of various concentrations of abscisic acid solution, within a certain range, the stomatal density is inversely proportional to the degree of ABA. 5. Affect flowering. Under long-day conditions, the ABA can strawberries and blackberries bud dormancy and promote flowering. 6. Affect sexual differentiation. GA can form male female plants of cannabis, this effect can be reversed ABA, but can not make the male plants form ABA female. Keywords: ABA ABA called s-induced resistance factors: There are the world's only industrialized producer "Sichuan Lomon Fusheng Technology Co., Ltd." production. s-induced resistance elements: a new physiological effects including induction was found to drought-resistant, anti-cold, cold, salt tolerance, and promote rooting and so on. Plants "balanced growth factor" s-induced resistance factor is the balance of plant endogenous hormone metabolism and growth activity related to the key factor. With water, fat metabolism in the body's ability to coordinate and promote plant absorption and balance. Effective regulation of plant root / shoot and vegetative and reproductive growth, to improve the quality of crops, yields an important role. Plants' resilience inducing factor " s-induced anti-stress tolerance in plants is to start hormone gene expression "first messenger", which can effectively activate the immune system, stress resistance in plants. With training source consolidate and enhance integrated plant resistance (drought, heat, cold, disease and insect resistance, salt tolerance) capabilities. Drought on agricultural production and water conservation, recovery and mitigation capacity and ecological environment protection has an important role. Green products s-induced anti-hormone is a natural product of all green plants contain a high purity of the product is obtained by microbial fermentation, high growth activity; non-toxic to humans and animals, non-irritating. Is a new high, the growth of active substances of natural greenery.
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No. 2
ABA (abscisic acid, ABA) Alias: Natural ABA 2 - cis, 4 - trans-5 - (1 - hydroxy-4 - oxo-2 ,6,6 - trimethyl-2 - cyclohexen-1 - yl) -3 - methyl -2,4 - Xu two acid (S) -5 - (1-Hydroxy-2 ,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl)-3-methyl-(2Z, 4E)-pentadienoic acid ABA Dormin (S) - (+)-Abscisic Acid MF: C15H20O4 Molecular Weight: 264.32 CAS Registry Number :14375 -45-2 Means can cause bud dormancy, leaf shedding and inhibiting growth and other physiological role of plant hormones. A method of inhibiting the growth of a plant hormone, because it can induce the leaves fall off the name. May be widely distributed in higher plants. In addition to prompting the leaves falling outside there are other effects, such as making buds into hibernation, prompting the formation of tubers, such as potatoes. Cell extension also inhibited. During the Beijing Olympics, Beijing city of millions of pots of flowers, abscisic acid are applied to ensure that the state flower in full bloom. ABA is defined: is a kind of plant hormone abscisic acid sesquiterpene structure. 1963 United States Endicott et purification of a substance from the bolls of cotton seedlings can significantly promote the petiole explants off, called off prime II.韦尔林 purification of a substance, such as the United Kingdom but also pieces from maple leaves under short-day conditions, deciduous trees can control sleep, called sleep hormone. 1965 confirmed that off and sleep hormone hormone II for the same substance, unified named ABA. References: << Soledad Bio >> ABA has the following physiological effects: 1. Promote shedding From the name of the ABA found that accelerate plant organs is an important physiological role in shedding the ABA. Off questions about the ABA causes leaves, flowers and fruits, there are different views. Addicott (1982) as one of the discoverers ABA, according to a large number of facts considered endogenous ABA promote shedding effect is positive. But ABA as a defoliant used in field trials has not been successful. This may be due to the leaves of IAA, GA and ABA have off_set_ting effects on the CTK. Milborrow (1984) considered exogenous ABA can cause loss, but lower than that of the role of exogenous ethylene. Osborne (1989) in the comments when you come off ethylene and ABA role of conclusion, ABA may not have a direct role in the off side, but only cause premature aging organ cells, followed by stimulation caused increase in ethylene production falling, falling real Process initiator instead of ethylene ABA. ABA biological test method, commonly used bean leaves (or cotton leaf) shedding method (Figure 7-18), will be the test substance lanolin ointment in opposite petiole stump observed shedding rate. In addition, oats or wheat coleoptile elongation suppression methods and cut into sections. 2 inhibits the growth of ABA is a strong growth inhibitor can inhibit the growth in vitro of whole plants or organs. ABA effects on growth and IAA, GA and CTK contrary, its cell division and elongation inhibited. It inhibits coleoptile, twigs, roots and hypocotyl elongation and other organs. 3. Promote sleep In the fall of short days, many woody plants leaf ABA content increased, promote bud into hibernation. The ABA is applied to the vigorous growth of these small branches of woody plants, can cause bud dormancy. Dormant buds potato also contains more ABA. Thus, ABA treatment of potato used to extend the dormancy. Pine, peach, chestnut, maple and other dormant seeds contain more ABA. After months of cold stratification, seeds ABA content decreased germination rate increased significantly. However, the level of ABA content, not necessarily the direct cause of seed dormancy. ABA content in the skin of red pine seeds high. After washing ABA content decreased significantly, but the germination rate is still very low. Further analysis of ABA content Yunnan pine, pine, pine, whitebark pine seeds, pine seeds found in a number of ABA content was also higher, but not the performance of sleep. For example, about 10 times the non-dormant seeds of Pinus armandii ABA content than red pine seed dormancy ABA content. Lettuce, radish and other seed germination, ABA has also been inhibited. 4 causes stomatal closure Under dry conditions, the leaf ABA content in plants increased, causing stomatal closure. This is due to the ABA induce K + leakage guard cells, cell dehydration make stomatal closure. Spraying the leaves of plants with ABA solution enables stomatal closure, reducing transpiration rate. Thus, ABA can be used as anti-transpiration agent. 5 Adjust the seed embryo development In recent years, noted that during the seed embryo development, endogenous ABA as a positive regulatory factor plays an important role (Quatranol987; Rajasekeran et al, 1987). Embryo normal endogenous ABA can suppress premature maturation and germination. In immature embryo culture, exogenous ABA can cause accelerated the formation of certain special storage protein; such as lack of ABA, these embryos or can not synthesize these proteins, or the formation of very little. This suggests that early seed development, ABA accumulation in control of the mid-level storage protein. ABA also controls whether the accumulation of the developing embryo starch and fat, is a matter to be studied. In addition, ABA also serve as plant defense salt damage, heat damage, chilling substance, which may prompt it to generate a new plant stress proteins. ABA also promote some of the fruit (such as apples) of differentiation, and prompted some short-day plants (such as black currant) flowering under long-day conditions. Is a kind of plant hormone abscisic acid sesquiterpene structure. 1963 United States Endicott et purification of a substance from the bolls of cotton seedlings can significantly promote the petiole explants off, called off prime II.韦尔林 purification of a substance, such as the United Kingdom but also pieces from maple leaves under short-day conditions, deciduous trees can control sleep, called sleep hormone. 1965 confirmed that off and sleep hormone hormone II for the same substance, unified named ABA. ABA In many parts of the leaf tissue of aging, ripe fruit, seeds and stems, roots or the like. ABA can promote the formation of water deficit. ABA Soon, the presence of phloem and xylem sap flow in plants before redistribution speed. ABA is synthesized precursor mevalonic acid, after which there are two farnesyl pyrophosphate generated path. First, a common fungal C15 direct way. First, the C40 indirect pathway in higher plants. The latter formed first carotenoids (violaxanthin), by light or biological oxidation and oxidative cleavage of the yellow pigment C15, and then converted to abscisic acid. Abscisic acid binding by oxidation and is metabolized. ABA can stimulate ethylene production, ripening urging it inhibits the synthesis of DNA and proteins. ABA physiological functions are the following: 1 inhibition and promote growth. Inhibit the growth of stems, hypocotyls, roots, leaves coleoptile or exogenous abscisic acid concentration is large. Shique promote low concentrations in vitro rooting cucumber hypocotyl elongation and accelerate duckweed breeding, seed development to stimulate parthenocarpy. 2. Maintain bud and seed dormancy. Sleep and balance the body on GA and ABA. 3. Promote fruit and leaf shedding. 4. Promote stomatal closure. ABA can quickly closed stomata, nor toxic to plants, is a good Antitranspirant. ABA concentration in a biological test test method that is floating in vitro leaf epidermal surface of various concentrations of abscisic acid solution, within a certain range, the stomatal density is inversely proportional to the degree of ABA. 5. Affect flowering. Under long-day conditions, the ABA can strawberries and blackberries bud dormancy and promote flowering. 6. Affect sexual differentiation. GA can form male female plants of cannabis, this effect can be reversed ABA, but can not make the male plants form ABA female. Keywords: ABA ABA also known as S-induced resistance factors: There are the world's only industrialized producer "Sichuan Lomon Fussa Ltd." production. S-induced resistance elements: a new physiological effects including induction was found to drought-resistant, anti-cold, cold, salt tolerance, and promote rooting and so on. Plants "balanced growth factor" S-induced resistance factor is the balance of plant endogenous hormone metabolism and growth activity related to the key factor. With water, fat metabolism in the body's ability to coordinate and promote plant absorption and balance. Effective regulation of plant root / shoot and vegetative and reproductive growth, to improve the quality of crops, yields an important role. Plants' resilience inducing factor " S-induced anti-stress tolerance in plants is to start hormone gene expression "first messenger", which can effectively activate the immune system, stress resistance in plants. With training source consolidate and enhance integrated plant resistance (drought, heat, cold, disease and insect resistance, salt tolerance) capabilities. Drought on agricultural production and water conservation, recovery and mitigation capacity and ecological environment protection has an important role. Green products S-induced anti-hormone is a natural product of all green plants contain a high purity of the product is obtained by microbial fermentation, high growth activity; non-toxic to humans and animals, non-irritating. Is a new high, the growth of active substances of natural greenery.
