Abstract
Lipid peroxidation in relation to MJ-promoted senescence of detached rice leaves was investigated. Lipid peroxidation seems to be involved in the regulation of MJ-promoted senescence of detached rice leaves. This conclusion was based on the observations that (a) methyl jasmonate, which was found to promote senescence, increases the level of lipid peroxidation, (b) linolenic and linoleic acid, precursors of the biosynthesis of jasmonic acid, promoted senescence and increased lipid peroxidation level, (c) benzyladenine, a synthetic cytokinin, counteracted MJ-promoted senescence and reduced the increase in lipid peroxidation level, (d) calcium chloride effectively reduced MJ-promoted senescence and at the same time reduced MJ-promoted lipid peroxidation. Free radical scavengers (reduced glutathione and sodium benzoate) and an iron chelator (2, 2′-bipyridine) prevented MJ-promoted senescence, suggesting that lipid peroxidation induced by MJ is mediated through free radicals.
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Hung, K.T., Kao, C.H. Involvement of lipid peroxidation in methyl jasmonate-promoted senescence in detached rice leaves. Plant Growth Regulation 24, 17–21 (1998). https://doi.org/10.1023/A:1005988727235
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DOI: https://doi.org/10.1023/A:1005988727235