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G6PDH activity highlights the operation of the cyclic electron flow around PSI in Physcomitrella patens during salt stress
Gao, Shan1,2; Zheng, Zhenbing1,2,3; Huan, Li1,2; Wang, Guangce1,2
2016-02-18
发表期刊SCIENTIFIC REPORTS
卷号6
文章类型Article
摘要Photosynthetic performances and glucose-6-phosphate dehydrogenase (G6PDH) activity in Physcomitrella patens changed greatly during salt stress and recovery. In P. patens, the cyclic electron flow around photosystem (PS) I was much more tolerant to high salt stress than PSII. After high salt stress, the PSII activity recovered much more slowly than that of PSI, which was rapidly restored to pretreatment levels even as PSII was almost inactivate. This result suggested that after salt stress the recovery of the cyclic electron flow around PSI was independent of PSII activity. In addition, G6PDH activity and NADPH content increased under high salt stress. When G6PDH activity was inhibited by glucosamine (Glucm, a G6PDH inhibitor), the cyclic electron flow around PSI and the NADPH content decreased significantly. Additionally, after recovery in liquid medium containing Glucm, the PSI activity was much lower than in liquid medium without Glucm. These results suggested the PSI activity was affected significantly by G6PDH activity and the NADPH content. Based on the above results, we propose that G6PDH in P. patens has a close relationship with the photosynthetic process, possibly providing NADPH for the operation of the cyclic electron flow around PSI during salt stress and promoting the restoration of PSI.
DOI10.1038/srep21245
收录类别SCI
语种英语
WOS记录号WOS:000370368000001
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/112467
专题实验海洋生物学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Gao, Shan,Zheng, Zhenbing,Huan, Li,et al. G6PDH activity highlights the operation of the cyclic electron flow around PSI in Physcomitrella patens during salt stress[J]. SCIENTIFIC REPORTS,2016,6.
APA Gao, Shan,Zheng, Zhenbing,Huan, Li,&Wang, Guangce.(2016).G6PDH activity highlights the operation of the cyclic electron flow around PSI in Physcomitrella patens during salt stress.SCIENTIFIC REPORTS,6.
MLA Gao, Shan,et al."G6PDH activity highlights the operation of the cyclic electron flow around PSI in Physcomitrella patens during salt stress".SCIENTIFIC REPORTS 6(2016).
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