Fangfang Cai, Yilang Wang, Gongliang Yu, Jie Wang, Xin Peng, Renhui Li
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引用次数: 14
摘要
从西藏湿土样品中分离到一株形态鉴定为nostoc - likegenus的新蓝藻菌株CHAB5880，采用形态学、遗传学和生态学特征相结合的多相方法对其进行了分类和系统发育鉴定。菌落通常为紫色至黑色，不规则聚集，形成分流粘液。基于16S rRNA基因的系统发育树表明，该新菌株形成了一个独特的集群，并从“Nostoc sensu stricto”分支和形态相似的Aliinostoc、Desmonostoc和Holatia分支中分离出来。菌株CHAB5880的16S-23S rRNA基因ITS二级结构表现出独特的D1-D1′、Box-B和V3螺旋结构，与其他异细胞属有明显区别。该属的模式种为藏红花(Purpurea tibecum sp.十一月)。
Proposal of Purpurea gen. nov. (Nostocales, Cyanobacteria), a novel cyanobacterial genus from wet soil samples in Tibet, China
A new cyanobacterial strain CHAB5880 morphologically identified to the Nostoc-like genus was isolated from wet soil samples in Tibet of China, and it was taxonomically and phylogenetically characterized based on the polyphasic approach combining morphological, genetic and ecological characteristics. Colonies of this strain were usually purple to black, irregularly clustering, forming diffluent mucilage. The phylogenetic tree based on 16S rRNA gene indicated that the novel strain formed a unique cluster, and separated from the 'Nostoc sensu stricto' clade and from the clades of the morphologically similar genera Aliinostoc, Desmonostoc and Holatia. The secondary structure of ITS between 16S-23S rRNA gene in the strain CHAB5880 showed unique patterns of D1-D1', Box-B and V3 helix, which distinguished it from other heterocytous genera. Purpurea tibecum sp. nov. was designated as the type species of the genus.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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