D1 protein turnover is involved in protection of Photosystem II against UV-B induced damage in the cyanobacterium Arthrospira (Spirulina) platensis

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	D1 protein turnover is involved in protection of Photosystem II against UV-B induced damage in the cyanobacterium Arthrospira (Spirulina) platensis
	Wu, Hongyan ; Abasova, Leyla ; Cheregi, Otilia ; Deak, Zsuzsanna ; Gao, Kunshan ; Vass, Imre ; Gao KS(高坤山)
刊名	http://dx.doi.org/10.1016/j.jphotobiol.2011.01.004
	2011
关键词	SOLAR ULTRAVIOLET-RADIATION SYNECHOCYSTIS SP PCC-6803 CHLOROPHYLL FLUORESCENCE ENVIRONMENTAL-STRESS BIOMASS PRODUCTION PCC 6803 DE-NOVO PHOTOINHIBITION REPAIR PHOTODAMAGE
英文摘要	National Natural Science Foundation of China [30800128]; Chinese-Hungarian Scientific and Technological Cooperation Program [CHN-25/2006]; By using two strains of Arthrospira (Spirulina) platensis, an economically important filamentous cyanobacterium, we compared the impairment of PSII activity and loss of D1 protein content under UV-B radiation. Our study showed that UV-B radiation induced a gradual loss of the oxygen-evolving activity to about 56% after 180 min UV-B irradiation both in strains 439 and D-0083, which have been kept under indoor and an outdoor culturing conditions, respectively for a prolonged period of time. The loss of oxygen evolution was accelerated in both strains in the presence of lincomycin, an inhibitor of protein synthesis, and the amount of D1 protein showed a decrease comparable to that of oxygen evolution during the UV-B exposure. However, the UV-B induced loss of oxygen-evolving activity and D1 protein amount was largely prevented when A. platensis cells were exposed to UV-B irradiance supplemented with visible light. Comparison of the two strains also showed a smaller extent of D1 protein synthesis dependent PSII repair in the indoor strain. Our results show that turnover of the D1 protein is an important defense mechanism to counteract the UV-B induced damage of PSII in A. platensis, and also that visible light plays an important role in maintaining the function of PSII under simultaneous exposure to UV-B and visible light. (C) 2011 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60887]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Wu, Hongyan,Abasova, Leyla,Cheregi, Otilia,et al. D1 protein turnover is involved in protection of Photosystem II against UV-B induced damage in the cyanobacterium Arthrospira (Spirulina) platensis[J]. http://dx.doi.org/10.1016/j.jphotobiol.2011.01.004,2011.
APA	Wu, Hongyan.,Abasova, Leyla.,Cheregi, Otilia.,Deak, Zsuzsanna.,Gao, Kunshan.,...&高坤山.(2011).D1 protein turnover is involved in protection of Photosystem II against UV-B induced damage in the cyanobacterium Arthrospira (Spirulina) platensis.http://dx.doi.org/10.1016/j.jphotobiol.2011.01.004.
MLA	Wu, Hongyan,et al."D1 protein turnover is involved in protection of Photosystem II against UV-B induced damage in the cyanobacterium Arthrospira (Spirulina) platensis".http://dx.doi.org/10.1016/j.jphotobiol.2011.01.004 (2011).