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The enhancement of the oxidative pentose phosphate pathway maybe involved in resolving imbalance between photosystem I and II in Dunaliella salina
Zheng, Zhenbing1,2,3; Gao, Shan1,3; He, Yuan5; Li, Zhuangyue4; Li, Yuanxiang1,2,3; Cai, Xuehua1,2,3; Gu, Whenhui1,3; Wang, Guangce1,3
2017-09-01
发表期刊ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
卷号26页码:402-408
文章类型Article
摘要Dunaliella salina is a unicellular green alga extensively studied due to its capability of salt stress tolerance and high economic value for beta-carotene production. Glycerol is synthesized to regulate intracellular osmotic pressure during salt stress in D. salina. In order to demonstrate the electron and reducing power distribution pattern in this process, photosynthetic performance and oxidative pentose phosphate pathway (OPPP) operation during salt stress were investigated. Glycerol was accumulated massively when D. salina was subjected to salt stress. Meanwhile, photosystem II (PSII) activity was increased while photosystem I (PSI) activity was decreased. This suggests that a small portion of the electrons generated in PSII were leaked and were transferred to generate reactive oxygen species (ROS), while most electrons subsequently used to PSI to generate ATP and NADPH. Furthermore, the OPPP was enhanced in order to provide reducing power and carbon skeleton for glycerol synthesis. In conclusion, during salt stress, the imbalance of photosynthetic electron distribution between PSII and PSI in D. salina resulted in a shortage of NADPH and ATP for glycerol biosynthesis, which also led the enhancement of the OPPP and ROS generation.
关键词Oxidative Pentose Phosphate Pathway Psi Reactive Oxygen Species Salt Stress Dunaliella Salina
DOI10.1016/j.algal.2017.07.024
收录类别SCI
语种英语
WOS记录号WOS:000411731800044
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/143213
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, Nanhai Rd 7, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
4.Fujian Agr & Forestry Univ, Dept Biol Sci, Fuzhou 35002, Fujian, Peoples R China
5.Soochow Univ, Sch Biol & Basic Med Sci, Suzhou 215000, Peoples R China
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Zheng, Zhenbing,Gao, Shan,He, Yuan,et al. The enhancement of the oxidative pentose phosphate pathway maybe involved in resolving imbalance between photosystem I and II in Dunaliella salina[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2017,26:402-408.
APA Zheng, Zhenbing.,Gao, Shan.,He, Yuan.,Li, Zhuangyue.,Li, Yuanxiang.,...&Wang, Guangce.(2017).The enhancement of the oxidative pentose phosphate pathway maybe involved in resolving imbalance between photosystem I and II in Dunaliella salina.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,26,402-408.
MLA Zheng, Zhenbing,et al."The enhancement of the oxidative pentose phosphate pathway maybe involved in resolving imbalance between photosystem I and II in Dunaliella salina".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 26(2017):402-408.
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