PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra

doi:10.1007/s11120-016-0275-5

	PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra
	Huang, Wei; Yang, Ying-Jie; Zhang, Jiao-Lin; Hu, Hong; Zhang, Shi-Bao
	2016-07-01
发表期刊	PHOTOSYNTHESIS RESEARCH
卷号	129 期号:1 页码:85-92
摘要	Although it has been believed that wild-type plants are capable of protecting photosystem I (PSI) under high light, our previous study indicates that PSI is sensitive to high light in the shade-established tree species Psychotria rubra. However, the underlying physiological mechanisms are unclear. In this study, we examined the roles of electron transfer from PSII to PSI and PSI redox state in PSI photoinhibition in P. rubra by treatments with lincomycin (Lin), diuron (DCMU), and methyl viologen (MV). After exposure to 2000 mu mol photons m(-2) s(-1) for 2 h, PSI activity decreased by 35, 29, 3, and 49 % in samples treated with H2O, Lin, DCMU, and MV, respectively. Meanwhile, the MV-treated samples showed higher P700 oxidation ratio than the H2O-treated samples, suggesting the PSI photoinhibition under high light was accompanied by high levels of P700 oxidation ratio. PSI photoinhibition was alleviated in the DCMU-treated samples but was accelerated in the MV-treated samples, suggesting that PSI photoinhibition in P. rubra was mainly controlled by electron transfer from PSII to PSI. Taking together, PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in P. rubra, which is different from the mechanisms of PSI photoinhibition in Arabidopsis thaliana and cucumber.
关键词	Electron Transfer High Light Psi Photoinhibition P700 Redox State Shade-established Species
DOI	10.1007/s11120-016-0275-5
收录类别	SCI
语种	英语
WOS记录号	WOS:000378411100008
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/26285
专题	资源植物与生物技术所级重点实验室
推荐引用方式 GB/T 7714	Huang, Wei,Yang, Ying-Jie,Zhang, Jiao-Lin,et al. PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra[J]. PHOTOSYNTHESIS RESEARCH,2016,129(1):85-92.
APA	Huang, Wei,Yang, Ying-Jie,Zhang, Jiao-Lin,Hu, Hong,&Zhang, Shi-Bao.(2016).PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra.PHOTOSYNTHESIS RESEARCH,129(1),85-92.
MLA	Huang, Wei,et al."PSI photoinhibition is more related to electron transfer from PSII to PSI rather than PSI redox state in Psychotria rubra".PHOTOSYNTHESIS RESEARCH 129.1(2016):85-92.

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