The Dynamic Changes of Alternative Electron Flows upon Transition from Low to High Light in the Fern Cyrtomium fortune and the Gymnosperm Nageia nagi
文献类型：期刊论文
| 作者 | Cheng, Jun-Bin; Zhang, Shi-Bao ; Wu, Jin-Song; Huang, Wei
|
| 刊名 | CELLS
 |
| 出版日期 | 2022 |
| 卷号 | 11期号:17页码:2768 |
| 关键词 | energy balancing ferns gymnosperms photoprotection photosynthesis PROTON MOTIVE FORCE PHOTOSYSTEM-I FLAVODIIRON PROTEINS FLUCTUATING LIGHT REGULATORY NETWORK CO2 ASSIMILATION TRANSPORT PHOTOINHIBITION PHOTOSYNTHESIS PHOTOPROTECTION |
| DOI | 10.3390/cells11172768 |
| 英文摘要 | In photosynthetic organisms except angiosperms, an alternative electron sink that is mediated by flavodiiron proteins (FLVs) plays the major role in preventing PSI photoinhibition while cyclic electron flow (CEF) is also essential for normal growth under fluctuating light. However, the dynamic changes of FLVs and CEF has not yet been well clarified. In this study, we measured the P700 signal, chlorophyll fluorescence, and electrochromic shift spectra in the fern Cyrtomium fortune and the gymnosperm Nageia nagi. We found that both species could not build up a sufficient proton gradient ( increment pH) within the first 30 s after light abruptly increased. During this period, FLVs-dependent alternative electron flow was functional to avoid PSI over-reduction. This functional time of FLVs was much longer than previously thought. By comparison, CEF was highly activated within the first 10 s after transition from low to high light, which favored energy balancing rather than the regulation of a PSI redox state. When FLVs were inactivated during steady-state photosynthesis, CEF was re-activated to favor photoprotection and to sustain photosynthesis. These results provide new insight into how FLVs and CEF interact to regulate photosynthesis in non-angiosperms. |
| WOS记录号 | WOS:000851043500001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/74734]  |
| 专题 | 中国科学院昆明植物研究所 |
| 推荐引用方式 GB/T 7714 | Cheng, Jun-Bin,Zhang, Shi-Bao,Wu, Jin-Song,et al. The Dynamic Changes of Alternative Electron Flows upon Transition from Low to High Light in the Fern Cyrtomium fortune and the Gymnosperm Nageia nagi[J]. CELLS,2022,11(17):2768. |
| APA | Cheng, Jun-Bin,Zhang, Shi-Bao,Wu, Jin-Song,&Huang, Wei.(2022).The Dynamic Changes of Alternative Electron Flows upon Transition from Low to High Light in the Fern Cyrtomium fortune and the Gymnosperm Nageia nagi.CELLS,11(17),2768. |
| MLA | Cheng, Jun-Bin,et al."The Dynamic Changes of Alternative Electron Flows upon Transition from Low to High Light in the Fern Cyrtomium fortune and the Gymnosperm Nageia nagi".CELLS 11.17(2022):2768. |
入库方式： OAI收割
来源：昆明植物研究所
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