期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 369, 期 1640, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rstb.2013.0225
关键词
PSII core phosphatase; photoinhibition; photosynthesis; photosystem II repair; STN8; thylakoid membrane
类别
资金
- National Science Foundation [NSF-MCB115871]
- United States-Israel Binational Agricultural Research and Development Fund [BARD US-4334-10]
- US National Institute of Food and Agriculture (NIFA) [2011-68005-30416]
- US Department of Agriculture (ARC) [WNP00775]
- Washington State University
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [1158571] Funding Source: National Science Foundation
Land plants live in a challenging environment dominated by unpredictable changes. A particular problem is fluctuation in sunlight intensity that can cause irreversible damage of components of the photosynthetic apparatus in thylakoid membranes under high light conditions. Although a battery of photoprotective mechanisms minimize damage, photoinhibition of the photosystem II (PSII) complex occurs. Plants have evolved a multi-step PSII repair cycle that allows efficient recovery from photooxidative PSII damage. An important feature of the repair cycle is its subcompartmentalization to stacked grana thylakoids and unstacked thylakoid regions. Thus, understanding the crosstalk between stacked and unstacked thylakoid membranes is essential to understand the PSII repair cycle. This review summarizes recent progress in our understanding of high-light-induced structural changes of the thylakoid membrane system and correlates these changes to the efficiency of the PSII repair cycle. The role of reversible protein phosphorylation for structural alterations is discussed. It turns out that dynamic changes in thylakoid membrane architecture triggered by high light exposure are central for efficient repair of PSII.
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