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学科主题: Environmental Sciences
题名: Molecular evaluation on the distribution, diversity, and toxicity of Microcystis (Cyanobacteria) species from Lake Ulungur-a mesotrophic brackish desert lake in Xinjiang, China
作者: Lin, Shen ; Shen, Jianzhong ; Liu, Yang ; Wu, Xingqiang ; Liu, Qigen ; Li, Renhui
通讯作者: Li, RH, Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat Biol, Inst Hydrobiol, Wuhan 430072, Peoples R China ; reli@ihb.ac.cn
关键词: Lake Ulungur ; Microcystis ; Real-time PCR ; HPLC ; Microcystin ; Mcy gene ; Brackish lake
刊名: ENVIRONMENTAL MONITORING AND ASSESSMENT
发表日期: 2011
卷: 175, 期:40547, 页:139-150
收录类别: SCI
部门归属: [Lin, Shen; Liu, Yang; Wu, Xingqiang; Li, Renhui] Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat Biol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Shen, Jianzhong] Huazhong Agr Univ, Fishery Coll, Wuhan 430070, Peoples R China; [Liu, Qigen] Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 200090, Peoples R China; [Lin, Shen; Liu, Yang; Wu, Xingqiang] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
资助者: National Basic Research Program of China (973) [2008CB418002]; Chinese Academy of Sciences [082303-1-501]
摘要: The distribution and diversity of the waterbloom-forming cyanobacteria, mainly including Microcystis species, were investigated using molecular approaches in Lake Ulungur, an increasingly eutrophic and brackish lake located in Xinjiang, China. Real-time PCR analyses showed the abundance of Microcystis 16S rDNA gene copies in the Ulungur Lake is low, at 7.2 x 10(4) copies L (-aEuro parts per thousand 1) averagely and 4.5 x 10(5) copies L (-aEuro parts per thousand 1) at maximum. Two Microcystis species, M. aeruginosa (Kutzing) Lemmermann and Microcystis wesenbergii (Komarek) Komarek were, for the first time, reported in this lake. The mcyA gene-specific PCR determination on the isolates of Microcystis showed that the M. aeruginosa strains are all mcyA-containing genotypes, while M. wesenbergii are non-mcyA-containing ones. The microcystin contents of the toxic M. aeruginosa strains were shown to be lower than those of the Microcystis strains isolated from other eutrophic lakes in China. Phylogenetic analyses based on 16S rRNA and rpoC1 genes showed that the Microcystis strains isolated from the Ulungur Lake were not genetically divergent from those isolated in the other freshwaters. Such an investigation would contribute to the knowledge on the bloom-forming cyanobacteria of the increasingly eutrophic and saline lakes in the desert area.
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/15680
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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Recommended Citation:
Lin, Shen; Shen, Jianzhong; Liu, Yang; Wu, Xingqiang; Liu, Qigen; Li, Renhui.Molecular evaluation on the distribution, diversity, and toxicity of Microcystis (Cyanobacteria) species from Lake Ulungur-a mesotrophic brackish desert lake in Xinjiang, China (SCI),ENVIRONMENTAL MONITORING AND ASSESSMENT,2011,175(40547):139-150
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文件名: Molecular evaluation on the distribution, diversity, and toxicity of Microcystis (Cyanobacteria) species from Lake Ulungur-a mesotrophic brackish desert lake in Xinjiang, China (SCI).pdf
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