Investigations of the characteristics and mode of action of an algalytic bacterium isolated from Tai Lake

doi:10.1007/s10811-009-9481-2

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	Investigations of the characteristics and mode of action of an algalytic bacterium isolated from Tai Lake
	Wang, Hui1 ; Liu, Ling 1; Liu, Zhaopu P.1; Qin, Song 1,2
	2010-08-01
发表期刊	JOURNAL OF APPLIED PHYCOLOGY
ISSN	0921-8971
卷号	22 期号:4 页码:473-478
文章类型	Article
摘要	An algalytic bacterium provisionally designated as TL1 was isolated from Tai Lake, a large freshwater lake in the Yangtze Delta plain on the border of the Jiangsu and Zhejiang provinces and close to Wuxi city in the People's Republic of China. Strain TL1 was identified as Achromobacter sp. based on its biophysical and biochemical properties and the analysis of its 16S rRNA sequence. Microcystis aeruginosa, which is the most common toxic cyanobacterium in eutrophic freshwater, could be decomposed by strain TL1. The results showed that after inoculation with the algalytic bacterium, the content of chlorophyll-a, maximum PSII quantum yield, and maximum electron transport rates of the alga decreased sharply. At first, the algal cells enhanced the activities of some antioxidative enzymes, but subsequently, the activities of antioxidative enzymes fell sharply once damage of the algal cells was achieved. The filtrate from strain TL1 culture suspension, after autoclaving and treatments with proteinase K, strongly inhibited algal growth, indicating that the lytic metabolites were extracellular and thermostable, not a protein.; An algalytic bacterium provisionally designated as TL1 was isolated from Tai Lake, a large freshwater lake in the Yangtze Delta plain on the border of the Jiangsu and Zhejiang provinces and close to Wuxi city in the People's Republic of China. Strain TL1 was identified as Achromobacter sp. based on its biophysical and biochemical properties and the analysis of its 16S rRNA sequence. Microcystis aeruginosa, which is the most common toxic cyanobacterium in eutrophic freshwater, could be decomposed by strain TL1. The results showed that after inoculation with the algalytic bacterium, the content of chlorophyll-a, maximum PSII quantum yield, and maximum electron transport rates of the alga decreased sharply. At first, the algal cells enhanced the activities of some antioxidative enzymes, but subsequently, the activities of antioxidative enzymes fell sharply once damage of the algal cells was achieved. The filtrate from strain TL1 culture suspension, after autoclaving and treatments with proteinase K, strongly inhibited algal growth, indicating that the lytic metabolites were extracellular and thermostable, not a protein.
关键词	Algalytic Photosynthetic Efficiency Antioxidative Enzyme
学科领域	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
DOI	10.1007/s10811-009-9481-2
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000279592900012
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5848
专题	实验海洋生物学重点实验室
作者单位	1.Nanjing Agr Univ, Key Lab Appl Marine Biotechnol, Nanjing 210095, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hui,Liu, Ling,Liu, Zhaopu P.,et al. Investigations of the characteristics and mode of action of an algalytic bacterium isolated from Tai Lake[J]. JOURNAL OF APPLIED PHYCOLOGY,2010,22(4):473-478.
APA	Wang, Hui,Liu, Ling,Liu, Zhaopu P.,&Qin, Song.(2010).Investigations of the characteristics and mode of action of an algalytic bacterium isolated from Tai Lake.JOURNAL OF APPLIED PHYCOLOGY,22(4),473-478.
MLA	Wang, Hui,et al."Investigations of the characteristics and mode of action of an algalytic bacterium isolated from Tai Lake".JOURNAL OF APPLIED PHYCOLOGY 22.4(2010):473-478.

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