《植物生理学报》 2016, 52(11): 1649-1662

植物光合作用中的捕光调节

许大全^*, 陈根云^*

中国科学院上海生命科学研究院植物生理生态研究所, 上海200032

通信作者：许大全；E-mail: dqxu@sippe.ac.cn; chenggy@sibs.ac.cn

摘　要：

在光波动的自然界中, 植物已经发展出一系列捕光调节策略, 以确保在弱光下实现光能利用最大化, 而在强光下又避免光破坏。这些策略至少包括快响应(在几分钟内完成), 如叶片运动、叶绿体运动与状态转换, 以及慢适应(在几小时或几天内发生), 如捕光天线蛋白丰度变化(天线大小的慢变化)与分子组成的改变。本综述从快响应到慢适应逐一讨论这些策略, 特别是根据作者研究组的研究及有关新进展讨论天线大小的快变化, 即光系统II一些捕光复合体(LHCIIs)从核心复合体的可逆脱离。

关键词：叶绿体运动; 叶片运动; 光系统II; LHCII; 反馈去激发; 可逆脱离

收稿：2016-07-01   修定：2016-10-28

资助：国家重点基础研究发展规划(2015CB150104)。

Light-harvesting regulation in plant photosynthesis

XU Da-Quan^*, CHEN Gen-Yun^*

Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China

Corresponding author: XU Da-Quan; E-mail: dqxu@sippe.ac.cn; chenggy@sibs.ac.cn

Abstract:

In the light-fluctuating nature plants have developed a series of strategies of light-harvesting regulation to ensure maximizing light utilization at low light and avoiding photodamage at high light. The strategies include at least rapid responses (performed within several minutes) such as leaf movement, chloroplast movement and state transitions, and slow acclimations (occurred in several hours or days) such as changes in the protein abundance of light-harvesting antenna (slow change in antenna size) and modifications of molecular compositions. This review discusses successively these strategies from fast responses to slow acclimations, especially the rapid change in antenna size, i.e. reversible dissociation of some light-harvesting complex of the photosystem II (LHCIIs) from photosystem II core complexes, based on the studies of author’s group and new progress in this respect.

Key words: chloroplast movement; leaf movement; photosystem II; LHCII; feedback de-excitation; reversible dissociation