Stimulation of cyclic electron flow around photosystem I upon a sudden transition from low to high light in two angiosperms Arabidopsis thaliana and Bletilla striata
文献类型：期刊论文
| 作者 | Yang, Ying-Jie1,2; Ding, Xiao-Xi3; Huang, Wei2
|
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 287页码:7 |
| 关键词 | Angiosperms Electron transport Fluctuating light Photoprotection Redox state of P700 Photosystem I |
| ISSN号 | 0168-9452 |
| DOI | 10.1016/j.plantsci.2019.110166 |
| 通讯作者 | Huang, Wei(huangwei@mail.kib.ac.cn) |
| 英文摘要 | In angiosperms, cyclic electron flow (CEF) around photosystem I (PSI) is more important for photoprotection under fluctuating light than under constant light. However, the underlying mechanism is not well known. In the present study, we measured the CEF activity, P700 redox state and electrochromic shift signal upon a sudden transition from low to high light in wild-type plants of Arabidopsis thaliana and Bletilla striata (Orchidaceae). Within the first 20 s after transition from low to high light, P700 was highly reduced in both species, which was accompanied with a sufficient proton gradient (Delta pH) across the thylakoid membranes. Meanwhile, the level of CEF activation was elevated. After transition from low to high light for 60 s, the plants generated an optimal Delta pH. Under such condition, PSI was highly oxidized and the level of CEF activation decreased to the steady state. Furthermore, the CEF activation was positively correlated to the P700 reduction ratio. These results indicated that upon a sudden transition from low to high light, the insufficient Delta pH led to the over-reduction of PSI electron carriers, which in turn stimulated the CEF around PSI. This transient stimulation of CEF not only favored the rapid Delta pH formation but also accepted electrons from PSI, thus protecting PSI at donor and acceptor sides. These findings provide new insights into the important role of CEF in regulation of photosynthesis under fluctuating light. |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000487165500006 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/69443]  |
| 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 | Huang, Wei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 3.Kunming Forest Resources Adm, Kunming, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ying-Jie,Ding, Xiao-Xi,Huang, Wei. Stimulation of cyclic electron flow around photosystem I upon a sudden transition from low to high light in two angiosperms Arabidopsis thaliana and Bletilla striata[J]. PLANT SCIENCE,2019,287:7. |
| APA | Yang, Ying-Jie,Ding, Xiao-Xi,&Huang, Wei.(2019).Stimulation of cyclic electron flow around photosystem I upon a sudden transition from low to high light in two angiosperms Arabidopsis thaliana and Bletilla striata.PLANT SCIENCE,287,7. |
| MLA | Yang, Ying-Jie,et al."Stimulation of cyclic electron flow around photosystem I upon a sudden transition from low to high light in two angiosperms Arabidopsis thaliana and Bletilla striata".PLANT SCIENCE 287(2019):7. |
入库方式： OAI收割
来源：昆明植物研究所
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