Photosystem I photoinhibition induced by fluctuating light depends on background low light irradiance
文献类型：期刊论文
| 作者 | Tan,Shun-Ling; Huang,Jia-Lin; Zhang,Feng-Ping; Zhang,Shi-Bao; Huang,Wei
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| 刊名 | ENVIRONMENTAL AND EXPERIMENTAL BOTANY
 |
| 出版日期 | 2021 |
| 卷号 | 181页码:104298 |
| 关键词 | Cyclic electron transport Photoprotection Photosynthesis Proton gradient Reactive oxygen species CYCLIC ELECTRON FLOW PROTON MOTIVE FORCE THYLAKOID MEMBRANES CO2 ASSIMILATION TRANSPORT LEAVES PSI PHOTOPROTECTION PHOTOSYNTHESIS ACCLIMATION |
| ISSN号 | 0098-8472 |
| DOI | 10.1016/j.envexpbot.2020.104298 |
| 英文摘要 | Fluctuating light (FL) can induce the preferential photoinhibition of photosystem I (PSI) in angiosperms. However, the underlying mechanisms have not been fully clarified. In this study, we examined the effects of low-light phases on FL-induced photoinhibition of PSI in Bletilla striata. We found that PSI was highly over-reduced within the first 20 s after transition from 59 to 1455 mu mol photons m(-2) s(-1). However, such severe over-reduction of PSI was not observed in FL transition from 132 or 272-1455 mu mol photons m(-2) s(-1). As a result, FL (59-1455) induced stronger PSI photoinhibition than FL (132-1455) and FL (272-1455). During low-light phase, a higher light intensity induced a higher proton gradient (Delta pH) across the thylakoid membranes, favoring the rapid formation of Delta pH after light increased and preventing an over-reduction of PSI. These results indicate that the low-light phase significantly affects the extent of PSI photoinhibition in FL. After transition from 59 or 132-1455 mu mol photons m(-2) s(-1), CEF activity first increased and then decreased to the steady-state. However, such transient CEF stimulation was not observed during the transition from 272-1455 mu mol photons m(-2) s(-1). Furthermore, the CEF activation in the high-light phase was highly dependent on the PSI reduction state. We conclude that CEF activation is finely regulated to optimize the trade-off between photoprotection and light use efficiency in FL. |
| WOS记录号 | WOS:000593778500001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/73624]  |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.[Tan, Shun-Ling 3.Zhang, Feng-Ping 4.Zhang, Shi-Bao 5.Huang, Jia-Lin 6.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan,Shun-Ling,Huang,Jia-Lin,Zhang,Feng-Ping,et al. Photosystem I photoinhibition induced by fluctuating light depends on background low light irradiance[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2021,181:104298. |
| APA | Tan,Shun-Ling,Huang,Jia-Lin,Zhang,Feng-Ping,Zhang,Shi-Bao,&Huang,Wei.(2021).Photosystem I photoinhibition induced by fluctuating light depends on background low light irradiance.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,181,104298. |
| MLA | Tan,Shun-Ling,et al."Photosystem I photoinhibition induced by fluctuating light depends on background low light irradiance".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 181(2021):104298. |
入库方式： OAI收割
来源：昆明植物研究所
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