Moderate Photoinhibition of Photosystem II Protects Photosystem I from Photodamage at Chilling Stress in Tobacco Leaves
文献类型：期刊论文
| 作者 | Huang, Wei1,2 ; Yang, Ying-Jie1,2; Hu, Hong1,2; Zhang, Shi-Bao1,2
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| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2016-02-22 |
| 卷号 | 7 |
| 关键词 | chilling temperature electron transfer growth light intensity photosystem I photosystem II photoprotection |
| 英文摘要 | It has been indicated that photosystem I (PSI) is susceptible to chilling-light stress in tobacco leaves, but the effect of growth light intensity on chilling-induced PSI photoinhibition in tobacco is unclear. We examined the effects of chilling temperature (4 degrees C) associated with moderate light intensity (300 mu mol photons m(-2) s(-1)) on the activities of PSI and photosystem II (PSII) in leaves from sun-and shade-grown plants of tobacco (Nicotiana tabacum cv. k326). The sun leaves had a higher activity of alternative electron flow than the shade leaves. After 4 h chilling treatment, the sun leaves showed significantly a higher PSI photoinhibition than the shade leaves. At chilling temperature the sun leaves showed a greater electron flow from PSII to PSI, accompanying with a lower P700 oxidation ratio. When leaves were pre-treated with lincomycin, PSII activity decreased by 42% (sun leaves) and 47% (shade leaves) after 2 h exposure to the chilling-light stress, but PSI activity remained stable during the chilling-light treatment, because the electron flow from PSII to PSI was remarkably depressed. These results indicated that the stronger chilling-induced PSI photoinhibition in the sun leaves was resulted from a greater electron flow from PSII to PSI. Furthermore, moderate PSII photoinhibition depressed electron flow to PSI and then protected PSI activity against further photodamage in chilled tobacco leaves. |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | CYCLIC ELECTRON FLOW ; CHLOROPLASTIC NAD(P)H DEHYDROGENASE ; CUCUMIS-SATIVUS L ; PHOTOSYNTHETIC RESPONSES ; CHLOROPHYLL FLUORESCENCE ; IRREVERSIBLE DAMAGE ; GROWTH TEMPERATURE ; FLUCTUATING LIGHT ; CO2 ASSIMILATION ; DROUGHT STRESS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370545900001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/25970]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming, Peoples R China 2.Yunnan Key Lab Wild Plant Resources, Kunming, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Wei,Yang, Ying-Jie,Hu, Hong,et al. Moderate Photoinhibition of Photosystem II Protects Photosystem I from Photodamage at Chilling Stress in Tobacco Leaves[J]. FRONTIERS IN PLANT SCIENCE,2016,7. |
| APA | Huang, Wei,Yang, Ying-Jie,Hu, Hong,&Zhang, Shi-Bao.(2016).Moderate Photoinhibition of Photosystem II Protects Photosystem I from Photodamage at Chilling Stress in Tobacco Leaves.FRONTIERS IN PLANT SCIENCE,7. |
| MLA | Huang, Wei,et al."Moderate Photoinhibition of Photosystem II Protects Photosystem I from Photodamage at Chilling Stress in Tobacco Leaves".FRONTIERS IN PLANT SCIENCE 7(2016). |
入库方式： OAI收割
来源：昆明植物研究所
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