您好，欢迎访问河南省农业科学院 机构知识库！
河南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Photosynthetic Electron Transport in Winter Wheat: Responses to Low-Temperature and Weak-Light Condition

文献类型： 外文期刊

作者： Yang, Cheng 1 ; Liu, Minghan 1 ; Du, Simeng 1 ; Zhang, Deqi 1 ; Li, Xiangdong 1 ; Wu, Liting 1 ; Shi, Yanhua 1 ; Fang, Baoting 1 ; Yan, Ge 1 ; Wei, Fang 2 ;

作者机构： 1.Zhengzhou Univ, Wheat Res Inst, Henan Acad Agr Sci, Postgrad T&R Base, Zhengzhou 450002, Peoples R China

2.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450052, Peoples R China

关键词： wheat; photosynthesis; low temperature; weak light; photosystem II; photosystem I

期刊名称：CELLS （ 影响因子：5.2； 五年影响因子：6.1 ）

ISSN：

年卷期： 2025 年 14 卷 16 期

页码：

收录情况： SCI

摘要： Spring low temperatures are a serious natural threat to wheat production in the Huang-Huai wheat region, and they are often accompanied by weak light environments during the day. To elucidate the response patterns and adaptation mechanisms of winter wheat leaves to low-temperature and weak-light environments, we simultaneously measured prompt chlorophyll a fluorescence, delayed chlorophyll a fluorescence, and modulated 820 nm light reflection; moreover, we analyzed the effects of low temperature and weak light treatment for different duration (2 h and 4 h) on the donor-side activity of photosystem II (PSII), the degree of PSII unit dissociation, the efficiency of light energy absorption and capture by PSII, electron transfer to QA- and PSI terminal, PSI activity and cyclic electron transport activity in isolated wheat leaves under controlled conditions. The results, which were corroborated using the three methods, revealed that in low-temperature and weak-light environments, the degree of PSII unit dissociation, and the efficiency of light energy absorption, capture, and electron transfer to QA- decreased, while the donor-side activity remained unaffected. In contrast, the efficiency of electron transfer to the PSI terminal and the overall performance of photosynthetic electron transport increased. Comprehensive analysis suggests that the increase in the electron receptor pool at the PSI terminal under low-temperature stress is a crucial factor contributing to the enhanced electron transfer efficiency to the PSI terminal and the improved overall performance of the photosynthetic electron transport chain, which is also a crucial factor in the high cold tolerance of winter wheat.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：河南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台