H2O2 metabolism during senescence of rice leaves:: changes in enzyme activities in light and darkness

被引：56

作者：

Chang, CJ ^{[1
]}

Kao, CH ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Agron, Taipei, Taiwan

来源：

PLANT GROWTH REGULATION | 1998年 / 25卷 / 01期

关键词：

ascorbate peroxidase; glutathione reductase; Oryza sativa; peroxidase; senescence; superoxide dismutase;

D O I：

10.1023/A:1005903403926

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The possible role of H2O2 metabolism on light-regulated senescence of detached rice leaves was investigated. Light retards senescence but at the same time accumulates more H2O2. Light treatment resulted in an increase in malondialdehyde level in detached rice leaves but no membrane leakage was observed in light-treated detached leaves. It seems that there was no direct relationship between lipid peroxidation and deterioration in membrane integrity. The results obtained suggest that retardation of senescence by light is closely related to high activities of superoxide dismutase and ascorbate peroxidase.

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收藏

页码：11 / 15

页数：5

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