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| Positive Correlation Between PSI Response and Oxidative Pentose Phosphate Pathway Activity During Salt Stress in an Intertidal Macroalga | |
Huan, Li1,2 ; Xie, Xiujun1; Zheng, Zhenbing1,2; Sun, Feifei1; Wu, Songcui1,2; Li, Moyang3; Gao, Shan1,2; Gu, Wenhui1,2; Wang, Guangce1; Wang, GC (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
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| 2014-08-01 | |
| 发表期刊 | PLANT AND CELL PHYSIOLOGY
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| 卷号 | 55期号:8页码:1395-1403 |
| 文章类型 | Article |
| 摘要 | Studies have demonstrated that photosynthetic limitations and starch degradation are responses to stress; however, the relationship between the two is seldom described in detail. In this article, the effects of salt stress on photosynthesis, the levels of NADPH and total RNA, the starch content and the activities of glucose-6-phosphate dehydrogenase (G6PDH) and ribulose-5-phosphate kinase (RPK) were evaluated. In thalli that underwent salt treatments, the cyclic electron flow through PSI showed greater stress tolerance than the flow through PSII. Even though the linear electron flow was suppressed by DCMU, the cyclic electron flow still operated. The electron transport rate I (ETRI) increased as the salinity increased when the thalli recovered in seawater containing DCMU. These results suggested that PSI receives electrons from a source other than PSII. Furthermore, the starch content and RPK activity decreased, while the content of NADPH and total RNA, and the activity of G6PDH increased under salt stress. Soluble sugar from starch degradation may enter the oxidative pentose phosphate pathway (OPPP) to produce NADPH and ribose 5-phosphate. Data analysis suggests that NADPH provides electrons for PSI in Ulva prolifera during salt stress, the OPPP participates in the stress response and total RNA is synthesized in excess to assist recovery. |
| 关键词 | Nadph Oppp Photosynthesis Salt Stress Starch |
| 学科领域 | Plant Sciences ; Cell Biology |
| DOI | 10.1093/pcp/pcu063 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000342978000003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/24148 |
| 专题 | 实验海洋生物学重点实验室 |
| 通讯作者 | Wang, GC (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 3.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Tianjin Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Huan, Li,Xie, Xiujun,Zheng, Zhenbing,et al. Positive Correlation Between PSI Response and Oxidative Pentose Phosphate Pathway Activity During Salt Stress in an Intertidal Macroalga[J]. PLANT AND CELL PHYSIOLOGY,2014,55(8):1395-1403. |
| APA | Huan, Li.,Xie, Xiujun.,Zheng, Zhenbing.,Sun, Feifei.,Wu, Songcui.,...&Wang, GC .(2014).Positive Correlation Between PSI Response and Oxidative Pentose Phosphate Pathway Activity During Salt Stress in an Intertidal Macroalga.PLANT AND CELL PHYSIOLOGY,55(8),1395-1403. |
| MLA | Huan, Li,et al."Positive Correlation Between PSI Response and Oxidative Pentose Phosphate Pathway Activity During Salt Stress in an Intertidal Macroalga".PLANT AND CELL PHYSIOLOGY 55.8(2014):1395-1403. |
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