Cyanide Inhibition of Acid-induced Growth in Avena Coleoptile Segments
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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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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...
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متن کاملRelationships between phytochrome state and photosensitive growth of Avena coleoptile segments.
Using various photostationary state light sources to obtain reproducible phytochrome conversion of from 5 to 88% P(FR), assayed by 2 wavelength in vivo spectrophotometry, relationships between initial percent P(FR) and elongation of apical Avena coleoptile segments over the succeeding 20 hours in darkness were studied. With material grown in total darkness, all P(FR) levels promote elongation, ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1979
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.64.5.679