Chloroplastic ATP Synthase Alleviates Photoinhibition of Photosystem I in Tobacco Illuminated at Chilling Temperature
文献类型：期刊论文
| 作者 | Yang, Ying-Jie1,2; Zhang, Shi-Bao1 ; Huang, Wei1
|
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2018-11-14 |
| 卷号 | 9页码:10 |
| 关键词 | chilling temperature chloroplastic ATP synthase proton motive force Delta pH photosystem I photoprotection |
| ISSN号 | 1664-462X |
| 英文摘要 | Chloroplastic ATP synthase plays a significant role in the regulation of proton motive force (pmf) and proton gradient (Delta pH) across the thylakoid membranes. However, the regulation of chloroplastic ATP synthase at chilling temperature and its role in photoprotection are little known. In our present study, we examined the chlorophyll fluorescence, P700 signal, and electrochromic shift signal at 25 degrees C, and 6 degrees C in tobacco (Nicotiana tabacum L.cv. Samsun). Although photosynthetic electron flow through both PSI and PSII were severely inhibited at 6 degrees C, non-photochemical quenching and P700 oxidation ratio were largely increased. During the photosynthetic induction under high light, the formation of pmf at 6 degrees C was similar to that at 25 degrees C. However, the pH was significantly higher at 6 degrees C, owing to the decreased activity of chloroplastic ATP synthase (g(H)(+)). During illumination at 6 degrees C and high light, a high Delta pH made PSI to be highly oxidized, preventing PSI from photoinhibition. These results indicate that the downregulation of g(H)(+) is critical to the buildup of Delta pH at low temperature, adjusting the redox state of PSI, and thus preventing photodamage to PSI. Our findings highlight the importance of chloroplastic ATP synthase in photoprotection at chilling temperature. |
| 资助项目 | National Natural Science Foundation of China[31670343] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2016347] |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL | [http://ir.kib.ac.cn/handle/151853/63158]  |
| 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 |
| 通讯作者 | Zhang, Shi-Bao; Huang, Wei |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, Kunming Inst Bot, Kunming, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ying-Jie,Zhang, Shi-Bao,Huang, Wei. Chloroplastic ATP Synthase Alleviates Photoinhibition of Photosystem I in Tobacco Illuminated at Chilling Temperature[J]. FRONTIERS IN PLANT SCIENCE,2018,9:10. |
| APA | Yang, Ying-Jie,Zhang, Shi-Bao,&Huang, Wei.(2018).Chloroplastic ATP Synthase Alleviates Photoinhibition of Photosystem I in Tobacco Illuminated at Chilling Temperature.FRONTIERS IN PLANT SCIENCE,9,10. |
| MLA | Yang, Ying-Jie,et al."Chloroplastic ATP Synthase Alleviates Photoinhibition of Photosystem I in Tobacco Illuminated at Chilling Temperature".FRONTIERS IN PLANT SCIENCE 9(2018):10. |
入库方式： OAI收割
来源：昆明植物研究所
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