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Plant Physiology 91:484-486 (1989)
© 1989 American Society of Plant Biologists

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Development and Growth Regulation

Auxins Induce {alpha}-Amylase Activity in Pea Cotyledons

Eiji Hirasawa

Department of Biology, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka 558, Japan

The report documents how the development of {alpha}-amylase activity in detached cotyledons of Pisum sativum cv Alaska is accelerated 2- to 12-fold during incubation with 1 micromolar to 10 micromolar 2,4-dichlorophenoxyacetic acid, 2,4,5-trichlorophenoxyacetic acid, or with 4-chloroindoleacetic acid, an endogenous auxin from Pisum sativum. It seems probable that auxin from the embryonic axis induces {alpha}-amylase in the attached cotyledons during germination.






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