Reversal of Hydroxyproline-Induced Inhibition of Elongation of Avena Coleoptiles
نویسندگان
چکیده
منابع مشابه
Hydroxyproline-Induced Inhibition of Elongation of Avena Coleoptiles1'
Summa(iry. Hlydroxy-L-proline-induced inhiibition of elongationi of Aven(a coleoptile segments was measuired in water and in indole-3-acetic aci(l. This inhibition was completely reversed by L-proline. Time-sequence experiments revealed that some time had to elapse, or some eloingationi had to occur, prior to the onset of hydroxyproline inhibition. The presence of sucrose supported the rate of ...
متن کاملInhibition of formation of protein-bound hydroxyproline by free hydroxyproline in Avena coleoptiles.
Free hydroxyproline inhibits the formation of protein-bound hydroxyproline from proline to a considerably greater extent than it does the incorporation of proline into protein of auxin-treated Avena coleoptiles. This inhibition is greater in the wall than in the cytoplasmic fraction. In the absence of auxin, free hydroxyproline exerts little or no inhibition of hydroxyproline formation. Further...
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...
متن کاملInhibition of Low pH-induced Elongation in Avena Coleoptiles by Abscisic Acid.
An angular position-sensing transducer was used to make continuous measurements of acid-induced elongation of Avena sativa coleoptile segments. Elongation rates at pH 4.5 (5 mm succinate buffer) were about 5-fold greater than those at pH 6.0. Buffered 0.1 mm abscisic acid produced a partial decrease of the growth rate. Pretreatments with abscisic acid buffered at pH 6.0 usually caused a further...
متن کاملHydroxyproline Formation and Its Relation to Auxin-induced Cell Elongation in the Avena Coleoptile.
A study has been made of the effects on hydroxyproline formation of 4 factors that influence the rate of cell elongation in the Avena coleoptile; auxin, sugars, an external osmoticum, and actinomycin D. Hydroxyproline formation is increased by a combination of auxin and sucrose, but is affected to a much lesser extent by either factor alone. Its formation is inhibited by an external osmoticum b...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1967
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.42.4.481