《植物生理学报》 2010, 46(6): 537-540

水杨酸对高温强光胁迫下小麦叶绿体基因psbA 表达的调节

赵鹏飞, 王林华, 赵会杰*, 梁书荣, 吕淑敏, 曲小菲, 汪月霞

河南农业大学生命科学学院, 郑州450002

通信作者：赵会杰；E-mail: zhaohj303@163.com；Tel: 0371-63555319

摘　要：

以0.1、0.3 和0.5 mmol.L-1 的水杨酸预处理灌浆期的小麦叶片, 测定在高温强光胁迫下小麦叶绿体基因psbA 表达、D1 蛋白含量和 PSII 功能。结果表明, 叶面喷施SA 不仅可减缓高温强光对 psbA 表达的抑制, 而且可促进胁迫后在适宜光温条 件下恢复表达的水平。

关键词：小麦; 水杨酸; 高温强光; psbA基因; 光系统II

收稿：2010-01-11   修定：2010-04-01

资助：国家自然科学基金(30971725, 30671214)。

Regulation of Exogenous Salicylic Acid on Expression of Chloroplast Gene psbA in Wheat (Triticum aestivum L.) Leaves under Heat and High Irradiance Stress

ZHAO Peng-Fei, WANG Lin-Hua, ZHAO Hui-Jie*, LIANG Shu-Rong, LÜ Shu-Min, QU Xiao-Fei, WANG Yue-Xia

College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China

Corresponding author: ZHAO Hui-Jie; E-mail: zhaohj303@163.com; Tel: 0371-63555319

Abstract:

Wheat leaves were sprayed with salicylic acid (SA) solution of three concentrations (0.1, 0.3, 0.5mmol·L^-1) at grain-filling stage. The expression of chloroplast gene psbA, content of D1 protein and performance of photosystem II (PS II) under heat and high irradiance stress were investigated. The results showed that pretreatment with SA not only retarded inhibition to psbA expression caused by heat and high irradiance stress, but also promoted restoration of psbA expression level after stress under proper temperature and light condition.

Key words: wheat; salicylic acid; heat and high irradiance stress; psbA; photosystem II