《植物生理学报》 2013, 49(4): 301-308

植物光系统I的低温光抑制及恢复

张子山, 杨程, 高辉远^*

山东农业大学生命科学学院, 作物生物学国家重点实验室, 山东泰安271018

通信作者：高辉远；E-mail: gaohy@sdan.edu.cn；Tel: 0538-8245985

摘　要：

在大多数逆境下, 植物只有PSII发生光抑制, 而PSI比较稳定。植物PSI光抑制主要发生在低温-光胁迫下。PSI发生光抑制后恢复非常缓慢, 光抑制后PSI活性的恢复是低温胁迫后光合作用恢复的限制因素。本文探讨了PSI光抑制及光抑制后PSI活性的恢复过程, 包括: PSI光抑制发生的决定因素、PSI低温光抑制的机理、PSI的光破坏防御机制和发生光抑制后PSI活性的恢复。

关键词：低温; PSI光抑制; 活性氧; PSI恢复

收稿：2013-01-14   修定：2013-03-08

Chilling Photoinhibition of Photosystem I and Its Recovery after Photoinhibition

ZHANG Zi-Shan, YANG Cheng, GAO Hui-Yuan*

College of Life Sciences, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, Shandong 271018, China

Corresponding author: GAO Hui-Yuan; E-mail: gaohy@sdan.edu.cn; Tel: 0538-8245985

Abstract:

Photosystem II (PSII) in plants is the primary target for photoinhibition, but PSI is more stable under most abiotic stress. However, chilling-light treatment causes PSI photoinhibition. After chilling-light stress, PSI activity recovers very slowly, so the recovery of PSI is the limiting factor for the recovery of a whole photosynthetic apparatus after chilling-light stress. This review focused the PSI photoinhibition and its recovery after photoinhibition, including: the requirements for the PSI photoinhibition; mechanism of the PSI photoinhibition; photoprotection of PSI; PSI recovery after photoinhibition.

Key words: chilling; PSI photoinhibition; reactive oxygen species; PSI recovery