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首页> 美国卫生研究院文献>Microorganisms >Unexpected High Diversity of Terrestrial Cyanobacteria from the Campus of the University of the Ryukyus Okinawa Japan
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Unexpected High Diversity of Terrestrial Cyanobacteria from the Campus of the University of the Ryukyus Okinawa Japan

机译：来自日本冲绳州琉球大学校园的陆地蓝细菌的意外高多样性

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Terrestrial cyanobacterial strains were isolated from the Nishihara campus of the University of the Ryukyus, Okinawa, Japan. The 13 sampling sites were distributed in a 200 m radius and appeared as dry, blackened stains. From these small areas, 143 cyanobacterial strains were established. The strains were divided into five morphotypes, including unicells, unicells with baeocytes, non-branching filaments, false-branching filaments, and heterocystous strains. From the strains, 105 partial 16S rRNA gene sequences were obtained and could be classified into 30 generic types. Among them, 22 unique strains and over 1100 bps of data were selected for further phylogenetic analyses. These sequences were positioned into six main clades corresponding to cyanobacterial orders: Nostocales, Chroococidiopsidales, Chroococcales, Oscillatoriales, Pleurocapsales, and Synechococcales. Almost all sequences had no identical matching data in GenBank and many of them had no closely related data. These data suggest that the terrestrial cyanobacteria are very divese even within close sampling areas, such as within the campus of the University of the Ryukyus. The established strains are not only important for classification of terrestrial cyanobacteria but also for possible application studies in the future.
机译：从日本冲绳琉球大学的西原校园分离出陆地蓝藻菌株。这13个采样点分布在200 m的半径内，并表现为干燥，发黑的污渍。从这些小区域，建立了143个蓝细菌菌株。菌株被分为五种形态型，包括单细胞，带有红细胞的单细胞，非分支丝，假分支丝和异囊菌株。从菌株中，获得了105个部分16S rRNA基因序列，可以将其分类为30个通用类型。其中，选择了22个独特的菌株和超过1100 bps的数据用于进一步的系统发育分析。这些序列被放置在与蓝细菌顺序相对应的六个主要进化枝中：鼻孔菌，嗜铬菌，色球菌，耳O虫菌，胸膜囊菌和Syechococcalcales。 GenBank中几乎所有序列都没有完全相同的匹配数据，而且许多序列都没有密切相关的数据。这些数据表明，即使在靠近采样区域的地方，例如在琉球大学校园内，陆地蓝藻也非常容易被剥离。建立的菌株不仅对陆地蓝细菌的分类很重要，而且对将来的应用研究也很重要。

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