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Slow zeaxanthin accumulation and the enhancement of CP26 collectively contribute to an atypical non-photochemical quenching in macroalga Ulva prolifera under high light
Gao, Shan1,2; Zheng, Zhenbing1,2; Wang, Jing3; Wang, Guangce1,2
2020-01-13
Source PublicationJOURNAL OF PHYCOLOGY
ISSN0022-3646
Pages11
Corresponding AuthorWang, Guangce(gcwang@qdio.ac.cn)
AbstractNon-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.
KeywordCP24 Green macroalgae NPQ Photoprotection Ulva prolifera Xanthophyll cycle
DOI10.1111/jpy.12958
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000507129100001
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164392
Collection实验海洋生物学重点实验室
Corresponding AuthorWang, Guangce
Affiliation1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
3.Ocean Univ China, Coll Marine Life Sci, Qingdao, Peoples R China
First Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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.
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