Diamine Oxidase in Cotyledons of Pisum sativum Develops as a Result of the Supply of Oxygen through the Embryonic Axis during Germination | Zendy

Eiji Hirasawa | Zendy

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Diamine Oxidase in Cotyledons of Pisum sativum Develops as a Result of the Supply of Oxygen through the Embryonic Axis during Germination

Author(s) -

Eiji Hirasawa

Publication year - 1988

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.88.2.441

Subject(s) - pisum , diamine oxidase , germination , sativum , seedling , biology , cotyledon , ethylene diamine , embryo , botany , biochemistry , chemistry , enzyme , microbiology and biotechnology , nuclear chemistry

The activity of diamine oxidase (EC 1.4.3.6.) in pea, Pisum sativum cv Alaska, cotyledons was studied. The rapid hydration caused by soaking seeds in water, the excision of the embryonic axis, and the suppression of the elongation of the embryonic axis by indoleacetic acid generate anaerobic conditions in these cotyledons that suppress diamine oxidase activity. These results show that oxygen is essential for the induction of diamine oxidase activity in pea cotyledons. During germination cotyledonary diamine oxidase develops as a result of the supply of oxygen through the embryonic axis of the intact pea seedling.

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