Slow zeaxanthin accumulation and the enhancement of CP26 collectively contribute to an atypical non-photochemical quenching in macroalga Ulva prolifera under high light
文献类型：期刊论文
| 作者 | Gao, Shan2,3; Zheng, Zhenbing2,3; Wang, Jing1; Wang, Guangce2,3 |
| 刊名 | JOURNAL OF PHYCOLOGY
 |
| 出版日期 | 2020-01-13 |
| 页码 | 11 |
| ISSN号 | 0022-3646 |
| 关键词 | CP24 Green macroalgae NPQ Photoprotection Ulva prolifera Xanthophyll cycle |
| DOI | 10.1111/jpy.12958 |
| 通讯作者 | Wang, Guangce(gcwang@qdio.ac.cn) |
| 英文摘要 | Non-photochemical quenching (NPQ) is an important photoprotective mechanism in plants, which dissipates excess energy and further protects the photosynthetic apparatus under high light stress. NPQ can be dissected into a number of components: qE, qZ, and qI. In general, NPQ is catalyzed by two independent mechanisms, with the faster-activated quenching catalyzed by the monomeric light-harvesting complex (LHCII) proteins and the slowly activated quenching catalyzed by LHCII trimers, both processes depending on zeaxanthin but to different extent. Here, we studied the NPQ of the intertidal green macroalga, Ulva prolifera, and found that the NPQ of U. prolifera lack the faster-activated quenching, and showed much greater sensitivity to dithiothreitol (DTT) than to dicyclohexylcarbodiimide (DCCD). Further results suggested that the monomeric LHC proteins in U. prolifera included only CP29 and CP26, but lacked CP24, unlike Arabidopsis thaliana and the moss Physcomitrella patens. Moreover, the expression levels of CP26 increased significantly following exposure to high light, but the concentrations of the two important photoprotective proteins (PsbS and light-harvesting complex stress-related [LhcSR]) did not change upon the same conditions. Analysis of the xanthophyll cycle pigments showed that, upon exposure to high light, zeaxanthin synthesis in U. prolifera was gradual and much slower than that in P. patens, and could effectively be inhibited by DTT. Based on these results, we speculate the enhancement of CP26 and slow zeaxanthin accumulation provide an atypical NPQ, making this green macroalga well adapted to the intertidal environments. |
| 资助项目 | National Natural Science Foundation of China[41976097] ; National Natural Science Foundation of China[41676157] ; National Natural Science Foundation of China[41606161] ; National Key R&D Program of China[2018YFD0901500] ; National Key R&D Program of China[2016YFC1400606] ; National Key R&D Program of China[2016YFC1400602] ; China Agriculture Research System[CARS-50] ; Shandong Provincial RD Program[2018GHY115019] |
| WOS研究方向 | Plant Sciences ; Marine & Freshwater Biology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000507129100001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/164391]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 通讯作者 | Wang, Guangce |
| 作者单位 | 1.Ocean Univ China, Coll Marine Life Sci, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Shan,Zheng, Zhenbing,Wang, Jing,et al. Slow zeaxanthin accumulation and the enhancement of CP26 collectively contribute to an atypical non-photochemical quenching in macroalga Ulva prolifera under high light[J]. JOURNAL OF PHYCOLOGY,2020:11. |
| APA | Gao, Shan,Zheng, Zhenbing,Wang, Jing,&Wang, Guangce.(2020).Slow zeaxanthin accumulation and the enhancement of CP26 collectively contribute to an atypical non-photochemical quenching in macroalga Ulva prolifera under high light.JOURNAL OF PHYCOLOGY,11. |
| MLA | Gao, Shan,et al."Slow zeaxanthin accumulation and the enhancement of CP26 collectively contribute to an atypical non-photochemical quenching in macroalga Ulva prolifera under high light".JOURNAL OF PHYCOLOGY (2020):11. |
入库方式： OAI收割
来源：海洋研究所
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