Anaerobic Accumulation of γ-Aminobutyric Acid and Alanine in Radish Leaves (Raphanus sativus, L.) | Zendy

John G. Streeter | Zendy; John F. Thompson | Zendy

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Anaerobic Accumulation of γ-Aminobutyric Acid and Alanine in Radish Leaves (Raphanus sativus, L.)

Author(s) -

John G. Streeter,

John F. Thompson

Publication year - 1972

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.49.4.572

Subject(s) - transamination , raphanus , alanine , biochemistry , decarboxylation , anaerobic exercise , chemistry , glutamate receptor , amino acid , aspartic acid , biology , botany , receptor , catalysis , physiology

In leaves, the anaerobic accumulation of alanine was accompanied by a loss of aspartate, and these changes preceded gamma-aminobutyrate accumulation and glutamate loss. Changes in keto acid content did not appear to be the cause of amino acid changes. Accumulation of gamma-aminobutyrate was due to acceleration of glutamate decarboxylation and arrest of gamma-aminobutyrate transamination. Changes in enzyme content did not explain the changes in reaction rates in vivo. Most of the aspartate may be converted anaerobically to alanine via oxalacetate and pyruvate.

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