Promotive effect of jasmonates on the senescence of detached maize leaves

被引:32
作者
Hung, KT [1 ]
Kao, CH [1 ]
机构
[1] NATL TAIWAN UNIV,DEPT AGRON,TAIPEI,TAIWAN
关键词
ethylene; jasmonic acid; leaf senescence; methyl jasmonate; Zea mays;
D O I
10.1007/BF00024405
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
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.
引用
收藏
页码:77 / 83
页数:7
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