Seasonal variations in photosystem I compared with photosystem II of three alpine evergreen broad-leaf tree species

doi:10.1016/j.jphotobiol.2016.10.014

	Seasonal variations in photosystem I compared with photosystem II of three alpine evergreen broad-leaf tree species
	Huang, Wei; Yang, Ying-Jie; Hu, Hong; Zhang, Shi-Bao
	2016-12-01
发表期刊	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
卷号	165 期号:1 页码:71-79
摘要	Low temperature associated with high light can induce photoinhibition of photosystem I (PSI) and photosystem II (PSII). However, the photosynthetic electron flow and specific photoprotective responses in alpine evergreen broad-leaf plants in winter is unclear. We analyzed seasonal changes in PSI and PSII activities, and energy quenching in PSI and PSII in three alpine broad-leaf tree species, Quercus guyavifolia (Fagaceae), Rhododendron decorum (Ericaceae), Euonymus tingens (Celastraceae). In winter, PSII activity remained stable in Q. guyavifolia but decreased significantly in R. decorum and E. tingens. Q. guyavifolia showed much higher capacities of cyclic electron flow (CEF), water-water cycle (WWC), non-photochemical quenching (NPQ) than R. decorum and E. tingens in winter. These results indicated that in alpine evergreen broad-leaf tree species the PSII activity in winter was closely related to these photoprotective mechanisms. Interestingly, unlike PSII, PSI activity was maintained stable in winter in the three species. Meanwhile, photosynthetic electron flow from PSII to PSI (ETRII) was much higher in Q guyavifolia, suggesting that the mechanisms protecting PSI activity against photoinhibition in winter differed among the three species. A high level of CEF contributed the stability of PSI activity in Q. guyavifolia. By comparison, R. decorum and E. tingens prevented PSI photoinhibition through depression of electron transport to PSI. Taking together, CEF, WWC and NPQ played important roles in coping with excess light energy in winter for alpine evergreen broad-leaf tree species. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Alpine Evergreen Species Cyclic Electron Flow Non-photochemical Quenching Photoinhibition Photoprotection Water-water Cycle
DOI	10.1016/j.jphotobiol.2016.10.014
收录类别	SCI
语种	英语
WOS记录号	WOS:000390824700008
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/33794
专题	资源植物与生物技术所级重点实验室
作者单位	Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Huang, Wei,Yang, Ying-Jie,Hu, Hong,et al. Seasonal variations in photosystem I compared with photosystem II of three alpine evergreen broad-leaf tree species[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,2016,165(1):71-79.
APA	Huang, Wei,Yang, Ying-Jie,Hu, Hong,&Zhang, Shi-Bao.(2016).Seasonal variations in photosystem I compared with photosystem II of three alpine evergreen broad-leaf tree species.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY,165(1),71-79.
MLA	Huang, Wei,et al."Seasonal variations in photosystem I compared with photosystem II of three alpine evergreen broad-leaf tree species".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 165.1(2016):71-79.

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