Promotive effect of jasmonates on the senescence of detached maize leaves | Zendy

Kuo Tung Hung | Zendy; Ching Huei Kao | Zendy

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Promotive effect of jasmonates on the senescence of detached maize leaves

Author(s) -

Kuo Tung Hung,

Ching Huei Kao

Publication year - 1996

Publication title -

plant growth regulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.919

H-Index - 101

eISSN - 1573-5087

pISSN - 0167-6903

DOI - 10.1007/bf00024405

Subject(s) - jasmonic acid , senescence , jasmonate , methyl jasmonate , abscisic acid , lipoxygenase , ethylene , biology , biochemistry , plant physiology , linolenic acid , chemistry , enzyme , botany , salicylic acid , fatty acid , microbiology and biotechnology , linoleic acid , arabidopsis , gene , mutant , catalysis

Promotion of senescence of detached maize leaves by jasmonates was investigated. Senescence of detached maize leaves was promoted by linolenic acid, the precursor of biosynthesis of jasmonic acid, and retarded by inhibitors of lipoxygenase, the first enzyme in the biosynthetic pathway of jasmonic acid. Results support a role of endogenous jasmonates in the regulation of senescence of detached maize leaves. Silver thiosulfate, an inhibitor of ethylene action, was found to inhibit methyl jasmonate, linolenic acid- and abscisic acid-promoted senescence of detached maize leaves. It seems that jasmonate-promoted senescence is mediated through an increase in ethylene sensitivity in detached maize leaves.

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