The combined effects of UV-C radiation and H2O2 on Microcystis aeruginosa, a bloom-forming cyanobacterium

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	The combined effects of UV-C radiation and H2O2 on Microcystis aeruginosa, a bloom-forming cyanobacterium
	Wang, Binliang 1,3; Wang, Xi 1,3; Hu, Yiwei 2,3; Chang, Mingxian 2; Bi, Yonghong 1; Hu, Zhengyu 1
刊名	CHEMOSPHERE
	2015-12-01
卷号	141 页码:34-43
关键词	UVC H2O2 Photosystem Cyanobacterial bloom
ISSN号	0045-6535
英文摘要	In order to get insight into the impacts of UVC/H2O2 on Microcystis aeruginosa, physiological and morphological changes as well as toxicity were detected under different UVC/H2O2 treatments. In the presence of sole UVC or H2O2, the net oxygen evolution rate decreased significantly (p < 0.05) since activity of photosystem II (PSII) was inhibited. Meanwhile, increase of intracellular reactive oxygen species (ROS), degradation of microcystin (MC) and ultrastructure destructions were observed. Under sole UVC treatment, no changes happened in the activity of photosystem I (PSI), but the degradation of D1 protein was observed. Under sole H2O2 treatment, an increase of malondialdehyde, aggregation of D1 protein and deformation of the thylakoid membrane were observed. ROS content under H2O2 treatment was about 5 times than that under UVC treatment. Combined use of UVC and H2O2, as well as 20 mJ cm(-2) UVC and 60 mu M H2O2, showed high synergetic effects. Obvious damage to membrane systems, the marked degradation of MC and inhibition of the photosystems were observed. It could be deduced that UVC worked on intracellular membrane components directly and the damaged oxygen-evolving complex, which was followed by the D1 protein degradation. H2O2 oxidised the membrane lipids via an ROS-mediated process, with thylakoid injury and the aggregation of D1 protein being the lethal mechanisms, and both PSII and PSI being the attacking targets. With regard towards the effective inactivation of M. aeruginosa and high removal of MC, UVC/H2O2 proposed a novel practical method in controlling cyanobacterial blooms. (C) 2015 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	PHOTOSYSTEM-II ; HYDROGEN-PEROXIDE ; OXIDATIVE STRESS ; D1 PROTEIN ; LIPID-PEROXIDATION ; QUALITY-CONTROL ; GREEN-ALGAE ; IN-VIVO ; PHOTOINHIBITION ; IRRADIATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000363824400006
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/27343]
专题	水生生物研究所_藻类生物学及应用研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Binliang,Wang, Xi,Hu, Yiwei,et al. The combined effects of UV-C radiation and H2O2 on Microcystis aeruginosa, a bloom-forming cyanobacterium[J]. CHEMOSPHERE,2015,141:34-43.
APA	Wang, Binliang,Wang, Xi,Hu, Yiwei,Chang, Mingxian,Bi, Yonghong,&Hu, Zhengyu.(2015).The combined effects of UV-C radiation and H2O2 on Microcystis aeruginosa, a bloom-forming cyanobacterium.CHEMOSPHERE,141,34-43.
MLA	Wang, Binliang,et al."The combined effects of UV-C radiation and H2O2 on Microcystis aeruginosa, a bloom-forming cyanobacterium".CHEMOSPHERE 141(2015):34-43.