中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The role of water-water cycle in regulating the redox state of photosystem I under fluctuating light

文献类型:期刊论文

作者Huang, Wei1; Yang, Ying-Jie1,2; Zhang, Shi-Bao1
刊名BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
出版日期2019-05-01
卷号1860期号:51页码:383-390
关键词Fluctuating light O-2 photo-reduction Photoinhibition Photosystem I Proton gradient Redox state of P700
ISSN号0005-2728
DOI10.1016/j.bbabio.2019.03.007
通讯作者Zhang, Shi-Bao(sbzhang@mail.kib.ac.cn)
英文摘要The regulation of photosystem I (PSI) redox state under fluctuating light was investigated for four species using P700 measurement and electrochromic shift analysis. Species included the angiosperms Camellia japonica, Bletilla striate and Arabidopsis thaliana and the fern Cyrtomium fortunei. For the first seconds after transition from low to high light, all species showed relatively low levels of the proton gradient (Delta pH) across the thylakoid membranes. At this moment, PSI was highly oxidized in C. japonica and C. fortunei but was over-reduced in B. striata and A. thaliana. In B. striata and A. thaliana, the redox state of PSI was largely dependent on Delta pH. In contrast, the rapid oxidation of P700 in C. japonica was relatively independent of Delta pH, but was mainly dependent on the outflow of electrons to O-2 via the water-water cycle. In the fern C. fortunei, PSI redox state was rapidly regulated by the fast photo-reduction of O-2 rather than the Delta pH. These results indicate that mechanisms regulating PSI redox state under fluctuating light differ greatly between species. We propose that the water-water cycle is an important mechanism regulating the PSI redox state in angiosperms.
WOS研究方向Biochemistry & Molecular Biology ; Biophysics
语种英语
WOS记录号WOS:000466055700004
源URL[http://ir.kib.ac.cn/handle/151853/66768]  
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
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Huang, Wei,Yang, Ying-Jie,Zhang, Shi-Bao. The role of water-water cycle in regulating the redox state of photosystem I under fluctuating light[J]. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,2019,1860(51):383-390.
APA Huang, Wei,Yang, Ying-Jie,&Zhang, Shi-Bao.(2019).The role of water-water cycle in regulating the redox state of photosystem I under fluctuating light.BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,1860(51),383-390.
MLA Huang, Wei,et al."The role of water-water cycle in regulating the redox state of photosystem I under fluctuating light".BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1860.51(2019):383-390.

入库方式: OAI收割

来源:昆明植物研究所

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