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Phylogenetic evaluation of the true-branched heterocytous cyanobacteria and description of soil dwelling Westiellopsis akinetica sp. nov.
FEMS Microbiology Letters ( IF 2.2 ) Pub Date : 2020-03-01 , DOI: 10.1093/femsle/fnaa046
Deeksha Mishra 1 , Archana Suradkar 2 , Aniket Saraf 3 , Prashant Singh 1
Affiliation  

Soil inhabiting true branching heterocytous cyanobacterium strain SNS 3 with T-type branching was collected from the campus of Banaras Hindu University, India and characterized using the polyphasic approach. Morphological observations showed the presence of akinetes (in chain), hormogonia and monocytes. Physiological characterization of strain SNS 3 showed high content of carotenoid in comparison to chlorophyll a content along with also exhibiting a higher C/N ratio in the nitrogen deficient BG110 medium. 16S rRNA gene sequencing and subsequent phylogeny indicated strong clustering of the strain SNS 3 within the Westiellopsis clade. Folded secondary structures of the ITS region showed visible differences in the D1-D1' and BoxB helix of the strain SNS 3. The polyphasic approach indicated the strain SNS 3 as a new member of the genus Westiellopsis with the name proposed being Westiellopsis akinetica sp. nov. on the basis of the International Code of Nomenclature for Algae, Fungi and Plants. Intense phylogenetic evaluation of the entire true-branched heterocytous clade indicated the need for more revisionary attempts for demarcating the sensu stricto clades along with highlighting the scope for further taxonomic revisions in the future.

中文翻译:

真支异型蓝藻细菌的系统发育评价和土壤寄主Westiellopsis akinetica sp。的描述。十一月

从印度Banaras印度大学的校园收集了居住有真实分支的T型分支异质蓝藻菌株SNS 3的土壤,并使用多相方法对其进行了表征。形态学观察表明,存在突肌(链状),性激素和单核细胞。与叶绿素a含量相比,菌株SNS 3的生理特性显示出高的类胡萝卜素含量,并且在缺氮的BG110培养基中还表现出更高的C / N比。16S rRNA基因测序和随后的系统发育表明,菌株Westernlopsis进化枝中的SNS 3强聚集。ITS区的折叠二级结构在菌株SNS 3的D1-D1'和BoxB螺旋中显示出明显的差异。多相方法表明SNS 3菌株是Westiellopsis属的新成员,提议的名称是Westiellopsis akinetica sp。十一月 根据《国际藻类,真菌和植物命名法》。对整个真实分支的异性胞囊进化枝进行了强烈的系统进化评估,表明有必要对严格的进化枝进行划分以进行更多的修订尝试,同时还强调了将来进一步分类学修订的范围。
更新日期:2020-04-20
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