Insusceptibility of oxygen-evolving complex to high light in Betula platyphylla
文献类型：期刊论文
| 作者 | Huang, Wei ; Zhang, Shi-Bao; Hu, Hong
|
| 刊名 | JOURNAL OF PLANT RESEARCH
 |
| 出版日期 | 2015-03-01 |
| 卷号 | 128期号:2页码:307-315 |
| 关键词 | High mountain plants Cyclic electron flow Oxygen-evolving complex Photoprotection Photosystem II |
| 通讯作者 | Huang,W (reprint author),Chinese Acad Sci,Kunming Inst Bot,Kunming 650201,Yunnan,Peoples R China. ; huangwei@mail.kib.ac.cn |
| 英文摘要 | High 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. |
| 学科主题 | Plant Sciences |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | CYCLIC ELECTRON FLOW ; PHOTOSYSTEM-II ; CHLOROPHYLL FLUORESCENCE ; NAD(P)H DEHYDROGENASE ; EXCITATION-ENERGY ; XANTHOPHYLL CYCLE ; QUANTUM YIELD ; PHOTOINHIBITION ; ARABIDOPSIS ; PHOTOPROTECTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350826000008 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/19366]  |
| 专题 | 昆明植物研究所_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, Kunming 650201, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Wei,Zhang, Shi-Bao,Hu, Hong. 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.(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. |
入库方式： OAI收割
来源：昆明植物研究所
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