The Influence of 0.03% Carbon Dioxide on Protein Metabolism of Etiolated Avena sativa Coleoptiles | Zendy

Alan W. Bown | Zendy; Thinzar Aung | Zendy

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The Influence of 0.03% Carbon Dioxide on Protein Metabolism of Etiolated Avena sativa Coleoptiles

Author(s) -

Alan W. Bown,

Thinzar Aung

Publication year - 1974

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.54.1.19

Subject(s) - coleoptile , etiolation , avena , biochemistry , metabolism , chemistry , stimulation , bicarbonate , context (archaeology) , biology , botany , enzyme , endocrinology , paleontology , organic chemistry

The influence of indoleacetic acid, 0.03% CO(2), and malate on protein metabolism of etiolated Avena sativa coleoptile sections has been investigated. All three were found to elevate both the rate of incorporation of labeled leucine into protein, and the level of soluble protein. The combination of indoleacetic acid and CO(2) stimulated these values in an additive or weakly synergistic manner, in contrast to the nonadditive influence of malate and CO(2). Evidence is presented that cyclo-heximide inhibited the stimulation of protein synthesis by CO(2), and that indoleacetic acid increased the incorporation of (14)C-bicarbonate into protein. These data are discussed in the context of CO(2)-stimulated growth of etiolated tissue, and proposals that CO(2)-stimulated growth involves dark CO(2) fixation.

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