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Insusceptibility of oxygen-evolving complex to high light in Betula platyphylla
Huang, Wei; Zhang, Shi-Bao; Hu, Hong; Huang,W (reprint author),Chinese Acad Sci,Kunming Inst Bot,Kunming 650201,Yunnan,Peoples R China.; huangwei@mail.kib.ac.cn
2015-03-01
Source PublicationJOURNAL OF PLANT RESEARCH
Volume128Issue:2Pages:307-315
AbstractHigh mountain plants growing at high altitude have to regularly cope with high light and high UV radiation that can lead to photodamage of oxygen-evolving complex (OEC). However, the underlying mechanism of photoprotection for OEC in high mountain plants is unclear. Sun leaves of Betula platyphylla were used to examine whether cyclic electron flow (CEF) around photosystem I (PSI) plays an important role in photoprotection for OEC. Our results indicated that the value of ETRI/ETRII ratio significantly increased under high light. With increasing light intensity, non-photochemical quenching (NPQ) gradually increased, and the fraction of P700 that is oxidized in a given state gradually increased. These results indicated that CEF was significantly activated under high light. After treatment with a high light of 1600 mu mol photons m(-2) s(-1) for 8 h, the OEC activity did not decline, but the maximum quantum yield of PSII (F (v) /F (m) ) ratio significantly decreased. These results suggested that CEF-dependent generation of proton gradient across thylakoid membrane protected OEC activity against high light. Furthermore, the stability of PSI activity during exposure to high light suggested that the high CEF activity in B. platyphylla played an important role in photoprotection for PSI activity.
KeywordHigh Mountain Plants Cyclic Electron Flow Oxygen-evolving Complex Photoprotection Photosystem Ii
Subject AreaPlant Sciences
DOI10.1007/s10265-014-0684-5
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000350826000008
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/19366
Collection资源植物与生物技术所级重点实验室
Corresponding AuthorHuang,W (reprint author),Chinese Acad Sci,Kunming Inst Bot,Kunming 650201,Yunnan,Peoples R China.; huangwei@mail.kib.ac.cn
AffiliationChinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Huang, Wei,Zhang, Shi-Bao,Hu, Hong,et al. Insusceptibility of oxygen-evolving complex to high light in Betula platyphylla[J]. JOURNAL OF PLANT RESEARCH,2015,128(2):307-315.
APA Huang, Wei,Zhang, Shi-Bao,Hu, Hong,Huang,W ,&huangwei@mail.kib.ac.cn.(2015).Insusceptibility of oxygen-evolving complex to high light in Betula platyphylla.JOURNAL OF PLANT RESEARCH,128(2),307-315.
MLA Huang, Wei,et al."Insusceptibility of oxygen-evolving complex to high light in Betula platyphylla".JOURNAL OF PLANT RESEARCH 128.2(2015):307-315.
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