Roles of alternative electron flows in response to excess light in Ginkgo biloba
文献类型：期刊论文
| 作者 | Yang,Ying-Jie; Sun,Hu; Zhang,Shi-Bao; Huang,Wei
|
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 312页码:111030 |
| 关键词 | Alternative electron flows Gymnosperms Photoprotection Photosynthesis Photosystem I Fluctuating light PROTON MOTIVE FORCE PHOTOSYSTEM-I FLUCTUATING LIGHT CO2 ASSIMILATION FLAVODIIRON PROTEINS PLANT-GROWTH PHOTOSYNTHESIS PHOTOINHIBITION TRANSPORT PHOTOPROTECTION |
| ISSN号 | 0168-9452 |
| DOI | 10.1016/j.plantsci.2021.111030 |
| 英文摘要 | Ginkgo biloba L., the only surviving species of Ginkgoopsida, is a famous relict gymnosperm, it may provide new insight into the evolution of photosynthetic mechanisms. Flavodiiron proteins (FDPs) are conserved in nonflowering plants, but the role of FDPs in gymnosperms has not yet been clarified. In particular, how gymnosperms integrate FDPs and cyclic electron transport (CET) to better adapt to excess light is poorly understood. To elucidate these questions, we measured the P700 signal, chlorophyll fluorescence and electrochromic shift signal under fluctuating and constant light in G. biloba. Within the first seconds after light increased, G. biloba could not build up a sufficient proton gradient (ApH). Concomitantly, photo-reduction of O2 mediated by FDPs contributed to the rapid oxidation of P700 and protected PSI under fluctuating light. Therefore, in G. biloba, FDPs mainly protect PSI under fluctuating light at acceptor side. Under constant high light, the oxidation of PSI and the induction of non-photochemical quenching were attributed to the increase in ApH formation, which was mainly caused by the increase in CET rather than linear electron transport. Therefore, under constant light, CET finely regulates the PSI redox state and non-photochemical quenching through ApH formation, protecting PSI and PSII against excess light. We conclude that, in G. biloba, FDPs are particularly important under fluctuating light while CET is essential under constant high light. The coordination of FDPs and CET fine-tune photosynthetic apparatus under excess light. |
| WOS记录号 | WOS:000697058800007 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/73622]  |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Sun, Hu 2.[Yang, Ying-Jie 3.Zhang, Shi-Bao 4.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang,Ying-Jie,Sun,Hu,Zhang,Shi-Bao,et al. Roles of alternative electron flows in response to excess light in Ginkgo biloba[J]. PLANT SCIENCE,2021,312:111030. |
| APA | Yang,Ying-Jie,Sun,Hu,Zhang,Shi-Bao,&Huang,Wei.(2021).Roles of alternative electron flows in response to excess light in Ginkgo biloba.PLANT SCIENCE,312,111030. |
| MLA | Yang,Ying-Jie,et al."Roles of alternative electron flows in response to excess light in Ginkgo biloba".PLANT SCIENCE 312(2021):111030. |
入库方式： OAI收割
来源：昆明植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。