Regulation of Chloroplast ATP Synthase Modulates Photoprotection in the CAM Plant Vanilla planifolia
文献类型：期刊论文
| 作者 | Wang, Hui; Wang, Xiao-Qian; Xing, Yi-Zhang; Zhao, Qing-Yun; Zhuang, Hui-Fa; Huang, Wei
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| 刊名 | CELLS
 |
| 出版日期 | 2022 |
| 卷号 | 11期号:10页码:1647 |
| 关键词 | photosynthesis CAM plants photoprotection proton gradient cyclic electron flow CYCLIC ELECTRON FLOW PROTON MOTIVE FORCE PSI CEF-PSI PHOTOSYSTEM-I CO2 ASSIMILATION FLUCTUATING LIGHT PHOTOSYNTHETIC PROTON QUENCHING NPQ WHEAT LEAVES TRANSPORT |
| DOI | 10.3390/cells11101647 |
| 英文摘要 | Generally, regulation of cyclic electron flow (CEF) and chloroplast ATP synthase play key roles in photoprotection for photosystems I and II (PSI and PSII) in C3 and C4 plants, especially when CO2 assimilation is restricted. However, how CAM plants protect PSI and PSII when CO2 assimilation is restricted is largely known. In the present study, we measured PSI, PSII, and electrochromic shift signals in the CAM plant Vanilla planifolia. The quantum yields of PSI and PSII photochemistry largely decreased in the afternoon compared to in the morning, indicating that CO2 assimilation was strongly restricted in the afternoon. Meanwhile, non-photochemical quenching (NPQ) in PSII and the donor side limitation of PSI (Y(ND)) significantly increased to protect PSI and PSII. Under such conditions, proton gradient ( increment pH) across the thylakoid membranes largely increased and CEF was slightly stimulated, indicating that the increased increment pH was not caused by the regulation of CEF. In contrast, the activity of chloroplast ATP synthase (g(H)(+)) largely decreased in the afternoon. At a given proton flux, the decreasing g(H)(+) increased increment pH and thus contributed to the enhancement of NPQ and Y(ND). Therefore, in the CAM plant V. planifolia, the increment pH-dependent photoprotective mechanism is mainly regulated by the regulation of g(H)(+) rather than CEF when CO2 assimilation is restricted. |
| WOS记录号 | WOS:000803374000001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/74767]  |
| 专题 | 中国科学院昆明植物研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Hui,Wang, Xiao-Qian,Xing, Yi-Zhang,et al. Regulation of Chloroplast ATP Synthase Modulates Photoprotection in the CAM Plant Vanilla planifolia[J]. CELLS,2022,11(10):1647. |
| APA | Wang, Hui,Wang, Xiao-Qian,Xing, Yi-Zhang,Zhao, Qing-Yun,Zhuang, Hui-Fa,&Huang, Wei.(2022).Regulation of Chloroplast ATP Synthase Modulates Photoprotection in the CAM Plant Vanilla planifolia.CELLS,11(10),1647. |
| MLA | Wang, Hui,et al."Regulation of Chloroplast ATP Synthase Modulates Photoprotection in the CAM Plant Vanilla planifolia".CELLS 11.10(2022):1647. |
入库方式： OAI收割
来源：昆明植物研究所
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