Rapid Growth Inhibition of Avena Coleoptile Segments by Abscisic Acid
نویسندگان
چکیده
منابع مشابه
Cyanide Inhibition of Acid-induced Growth in Avena Coleoptile Segments.
The comparative effects of metabolic inhibitors on acid- and auxininduced growth in oat (Avena sativa L. var. Victory) coleoptile segments have been examined. Acid (pH 4)-induced growth in both peeled and unpeeled segments is inhibited by 1 millimolar KCN when added at the time of acidification. KCN inhibits total acid-induced growth by 59 and 76%, respectively, in peeled and nonpeeled segments...
متن کاملRapid Inhibition of Auxin-induced Elongation of Avena Coleoptile Segments by Cordycepin.
The effects of cordycepin (3'-deoxyadenosine), an RNA synthesis inhibitor, on auxin-induced elongation in Avena coleoptile segments were studied with a position-sensing transducer. Cordycepin rapidly inhibited auxin-stimulated growth in the coleoptile segments whether added before, at the same time as, or after, the 2 mum auxin treatment. Midcourse additions of 100, 50, and 25 mug/ml cordycepin...
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It has been shown recently that treatment with gibberellic acid (GA) results in an increase in diffusible auxin in the pea (7), sunflower (7) and Centaurea (8). Treatment with GA also increases the amount of extractable auxin in peas (14), the potato tuber (18), Rhus typhina (13) and Trifoliuws ochroleucunm (15). Further it has been (lenmonstrated that in the dwarf pea and Cenitauirea the incre...
متن کاملCalorimetric studies of the elongation of Avena coleoptile segments.
Elongation rate and heat produced by Avena coleoptile segments suspended in sucrose buffer solutions were measured at pH values from 3.5 to 8.5. The caloric efficiency of elongation (CEE) was defined as the ratio of the rate of elongation to the rate of heat production. Elongation and CEE were greatest at intermediate pH values, but heat production (about 1 cal/g.hr) was insensitive to pH withi...
متن کاملInhibition of cell elongation in Avena coleoptile by hydroxyproline.
A study has been made of the hydroxyproline-induced inhibition of elongation of Avena coleoptile tissues. The isomers of 4-hydroxyproline differ in their effectiveness; only the L isomers are growth inhibitors with the cis form (allohydroxyproline) being more effective than the trans form (hydroxyproline). Hydroxyproline differs from other amino acid antagonists and protein synthesis inhibitors...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1973
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.51.1.93