The effect of cycloheximide on IAA-stimulated transport of 14C-ABA and 14C-sucrose in long pea epicotyl segments |
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Authors: | Vladimír Borkovec Stanislav Procházka |
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Affiliation: | (1) Department of Nuclear Methods, University of Agriculture, Zemdlská 1, CS-61 300 Brno, Czechoslovakia;(2) Department of Botany, University of Agriculture, Zemdlská 1, CS-61 300 Brno, Czechoslovakia |
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Abstract: | The effect of cycloheximide (CH) on the indol-3yl-acetic acid (IAA)-stimulated transport of 14C-labelled abscisic acid (ABA) and 14C-labelled sucrose was studied in 110 mm long pea epicotyl segments. IAA application resulted in elongation growth of the segments. This effect was decreased by CH treatment which also reduced [14C] ABA and [14C] sucrose accumulation in the growing apical part of the segments. A reduction in [14C] IAA uptake and in protein synthesis in this part of the segments was also observed. The simultaneous inhibition of protein synthesis and reduction of [14C] ABA and [14C] sucrose transport suggests that IAA can stimulate the transport of ABA and sucrose through a protein synthesis-based elongation growth. |
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Keywords: | Pisum sativum L. elongation protein synthesis transport |
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