脱球菌
生物
基因组
耐辐射球菌
核糖体RNA
同义词(分类学)
遗传学
基因
16S核糖体RNA
DNA
属
动物
作者
Priya Lakra,Helianthous Verma,Chandni Talwar,Durgesh Narain Singh,Nirjara Singhvi,Rup Lal,Vipin Gupta
标识
DOI:10.1099/ijsem.0.004879
摘要
Deinococcus species are widely studied due to their utility in bioremediation of sites contaminated with radioactive elements. In the present study, we re-evaluated the taxonomic placement of two species of the genus Deinococcus namely D. swuensis DY59 T and D. radiopugnans ATCC 19172 T based on whole genome analyses. The 16S rRNA gene analysis revealed a 99.58% sequence similarity between this species pair that is above the recommended threshold value for species delineation. These two species also clustered together in both the 16S rRNA gene and core genome based phylogenies depicting their close relatedness. Furthermore, more than 98% of genes were shared between D. swuensi s DY59 T and D. radiopugnans ATCC 19172 T . Interestingly, D. swuensis DY59 T and D. radiopugnans ATCC 19172 T shared high genome similarity in different genomic indices. They displayed an average nucleotide identity value of 97.63%, an average amino acid identity value of 97% and a digital DNA–DNA hybridization value equal to 79.50%, all of which are well above the cut-off for species delineation. Altogether, based on these evidences, D. swuensis DY59 T and D. radiopugnans ATCC 19172 T constitute a single species. Hence, as per the priority of publication, we propose that Deinococcus swuensis Lee et al. 2015 should be reclassified as a later heterotypic synonym of Deinococcus radiopugnans .
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