Thermotolerance and related antioxidant enzyme activities induced by heat acclimation and salicylic acid in grape (Vitis vinifera L.) leaves

被引：71

作者：

Wang, LJ ^{[1
]}

Li, SH ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China

来源：

PLANT GROWTH REGULATION | 2006年 / 48卷 / 02期

关键词：

antioxidant enzymes; H2O2; heat acclimation; salicylic acid; thermotolerance; Vitis vinifera;

D O I：

10.1007/s10725-005-6146-2

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Thermotolerance and related antioxidant enzyme activities induced by both heat acclimation and exogenous salicylic acid (SA) application were studied in grapevine (Vitis vinifera L. cv. Jingxiu). Heat acclimation and exogenous SA application induced comparable changes in thermotolerance, ascorbic acid (AsA), glutathione (GSH), and hydrogen peroxide (H2O2) concentrations, and in activities of the antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD), glutathione reductase (GR), ascorbic peroxidase (APX) and catalase (CAT) in grape leaves. Within 1 h at 38 degrees C, free SA concentration in leaves rose from 3.1 mu g g(-1)supercript stop FW to 19.1 mu g g(-1) FW, then sharply declined. SA application and heat acclimation induced thermotolerance were related to changes of antioxidant enzyme activities and antioxidant concentration, indicating a role for endogenous SA in heat acclimation in grape leaves.

引用

页码：137 / 144

页数：8

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