Endogenous Auxin and Ethylene in Pellia (Bryophyta) | Zendy

Robert J. Thomas | Zendy; Marcia A. Harrison | Zendy; Jane Taylor | Zendy; Peter B. Kaufman | Zendy

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Endogenous Auxin and Ethylene in Pellia (Bryophyta)

Author(s) -

Robert J. Thomas,

Marcia A. Harrison,

Jane Taylor,

Peter B. Kaufman

Publication year - 1983

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.73.2.395

Subject(s) - auxin , ethylene , seta , indole 3 acetic acid , isotope dilution , acetic acid , endogeny , elongation , biology , chromatography , biochemistry , chemistry , botany , mass spectrometry , materials science , ultimate tensile strength , gene , metallurgy , genus , catalysis

The occurrence of endogenous indole-3-acetic acid and ethylene in bryophyte tissue was tentatively demonstrated using gas chromatography, high performance liquid chromatography, and double-standard isotope dilution techniques. Rapidly elongating stalks (or setae) of Pellia epiphylla (L.) Corda sporophytes contain approximately 2.5 to 2.9 micrograms per gram fresh weight of putative free IAA. Ethylene released by setae increases during growth from 0.027 to 0.035 nanoliter per seta per hour. Application of 5 microliters per liter ethylene inhibits auxin-stimulated elongation growth of this tissue, a result which suggests that both endogenously produced compounds act in tandem as natural growth modulators.

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