Indoleacetic Acid Oxidizing Enzyme & Inhibitors from Light-Grown Cotton.
نویسندگان
چکیده
منابع مشابه
Distribution of Indoleacetic Acid Oxidase and Inhibitors in Light-Grown Cotton.
Extracts of green plant tissues exhibiting IAAoxidase activity characteristically contain inhibitors of the enzyme (4, 11). The high concentration of such inhibitors prompted the discoverers of IAAoxidase to suggest that the system does not function in green tissue (16). Later, Galston and Dalberg (6) found that in etiolated tissue the in vitro IAAoxidase activity increases with age or IAA trea...
متن کاملStimulation of indoleacetic Acid oxidase and inhibition of catalase in cotton extracts by plant acids.
Activity of indoleacetic acid oxidase in partially purified extracts from cotton is stimulated by small amounts of malate, succinate, fumarate, and other plant acids. The stimulation is apparently due to inhibition of catalase, which is detectable in certain preparations. The lag phase of indoleacetic acid oxidation by crude preparations is eliminated by steps in processing which conceivably ei...
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Basipetal auxin transport in 6-day-old dark-grown corn coleoptiles was severely inhibited by increasing levels of glyphosate applied during the transport period.The velocity of basipetal transport of [(14)C]indoleacetic acid in hypocotyls from 7-day-old cotton seedlings was significantly reduced when sublethal doses of glyphosate [N-(phosphonomethyl)glycine] were applied to the cotyledonary lea...
متن کاملBoron Deficiency in Unfertilized Cotton (Gossypium hirsutum) Ovules Grown in Vitro.
Boron deficiency and phytohormone interactions have been studied in unfertilized cotton (Gossypium hirsutum) ovules grown in vitro. Such ovules required exogenous indoleacetic acid and/or gibberellic acid for fiber elongation. Boron also was required for maintenance of fiber elongation and normal morphogenesis throughout 14 days of culture. The amount of exogenous boron necessary for maximum fi...
متن کاملEffect of manganese toxicity on the indoleacetic Acid oxidase system of cotton.
The effect of substrate manganese on tissue manganese levels and activity of the indoleacetic acid (IAA)-oxidase system of cotton (Gossypium hirsutum, L.) was investigated. A sand culture technique was used with 1, 3, 9, 27 and 81 mg manganese (MnSO(4)) per liter nutrient solution applied in various experiments.The following relationships held for both long-term (126 days) and short-term (12-14...
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عنوان ژورنال:
- Plant physiology
دوره 38 4 شماره
صفحات -
تاریخ انتشار 1963