Effect of Ethylene on the Uptake, Distribution, and Metabolism of Indoleacetic Acid-1-14C and -2-14C and Naphthaleneacetic Acid-1-14C 1

AUTOR(ES)

Beyer, Elmo M.

RESUMO

The effect of ethylene on the uptake, distribution, and metabolism of indoleacetic acid (IAA)-1-14C, IAA-2-14C, and naphthaleneacetic acid (NAA)-1-14C in cotton stem sections (Gossypium hirsutum L., var. Stoneville 213) was studied. Stem sections excised from plants pretreated with ethylene for 15 hours transported significantly less 14C-IAA and 14C-NAA than control sections. Concomitant features of the reduction of 14C-IAA transport were an increase in decarboxylation and a trend toward a reduction in total uptake. With 14C-NAA, however, total uptake was significantly increased, and decarboxylation was unaffected.

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