Effects of laser irradiation on a bloom forming cyanobacterium Microcystis aeruginosa

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	Effects of laser irradiation on a bloom forming cyanobacterium Microcystis aeruginosa
	Li, Tiancui 1,3; Bi, Yonghong 2; Liu, Jiantong 1; Wu, Chenxi 1
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016-10-01
卷号	23 期号:20 页码:20297-20306
关键词	Laser irradiation Microcystis aeruginosa Growth inhibition Photosynthetic activity Antioxidant enzyme Microcystin
ISSN号	0944-1344
英文摘要	Effects of laser irradiation on photosystem II (PS II) photochemical efficiencies, growth, and other physiological responses of Microcystis aeruginosa were investigated in this study. Results indicate that laser irradiation (wavelengths 405, 450, 532, and 650 nm) could effectively inhibit maximal PS II quantum yield (Fv/Fm) and maximal electron transport rates (ETRmax) of M. aeruginosa, while saturating light levels (E-k) of M. aeruginosa did not change significantly. Among the four tested wavelengths, 650 nm laser (red light) showed the highest inhibitory efficiency. Following 650 nm laser irradiation, the growth of M. aeruginosa was significantly suppressed, and contents of cellular photosynthetic pigments (chlorophyll a, carotenoid, phycocyanin, and allophycocyanin) decreased as irradiation dose increased. Meanwhile, laser irradiation enhanced the enzyme activities of superoxide dismutase (SOD) and peroxidase (POD) in M. aeruginosa cells. Lower irradiation doses did not change the intracellular microcystin contents, but higher dose irradiation (> 1284 J cm(-2)) caused the release of microcystin into the culture medium. Transmission electron microscope examination showed that the ultrastructure of M. aeruginosa cells was destructed progressively following laser irradiation. Effects of laser irradiation on M. aeruginosa may be a combination of photochemical, electromagnetic, and thermal effects.
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]	HE-NE-LASER ; ALGAL BLOOMS ; B RADIATION ; GROWTH ; PROTECTION ; REMOVAL ; LIGHT ; WATER ; PHOTOSYNTHESIS ; DEGRADATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000387599100022
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/28678]
专题	水生生物研究所_其他_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu South Rd 7, Wuhan 43001284, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Tiancui,Bi, Yonghong,Liu, Jiantong,et al. Effects of laser irradiation on a bloom forming cyanobacterium Microcystis aeruginosa[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(20):20297-20306.
APA	Li, Tiancui,Bi, Yonghong,Liu, Jiantong,&Wu, Chenxi.(2016).Effects of laser irradiation on a bloom forming cyanobacterium Microcystis aeruginosa.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(20),20297-20306.
MLA	Li, Tiancui,et al."Effects of laser irradiation on a bloom forming cyanobacterium Microcystis aeruginosa".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.20(2016):20297-20306.