Section 1
Chapter 603

Auxin-induced ethylene biosynthesis in subapical stem sections of etiolated seedlings of Pisum sativum L

Jones, J.F.; Kende, H.

Planta 146(5): 649-656


ISSN/ISBN: 0032-0935
PMID: 24318341
DOI: 10.2307/23374410
Accession: 000602456

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1-Aminocyclopropane-1-carboxylic acid (ACC) stimulated ethylene production in subapical stem sections of etiolated pea seedlings in the presence and absence of IAA. No lag period was evident following application of ACC, and the response was saturated at a conc. of 1 mM ACC. Levels of endogenous ACC paralleled the increase in ethylene production in sections treated with different conc. of IAA and with selenomethionine or selenomethionine + IAA. The IAA-induced formation of both ACC and ethylene was blocked by the rhizobitoxine analog aminoethoxyvinylglycine. Labelling studies with L-U-14C-methionine showed an increase in the labelling of ethylene and ACC after treatment with IAA.

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