PHYLOGENETIC RELATIONSHIPS BETWEEN BACILLUS SPECIES AND RELATED GENERA INFERRED FROM 16S RDNA SEQUENCES
文献类型: 外文期刊
第一作者: Wang, Wei
作者: Wang, Wei;Sun, Mi
作者机构:
关键词: Bacillus phylogeny;Bayesian inference;Evolutionary trees;16S rDNA
期刊名称:BRAZILIAN JOURNAL OF MICROBIOLOGY ( 影响因子:2.476; 五年影响因子:3.391 )
ISSN: 1517-8382
年卷期: 2009 年 40 卷 3 期
页码:
收录情况: SCI
摘要: Neighbor-joining, maximum-parsimony, minimum-evolution, maximum-likelihood and Bayesian trees constructed based on 16S rDNA sequences of 181 type strains of Bacillus species and related taxa manifested nine phylogenetic groups. The phylogenetic analysis showed that Bacillus was not a monophyletic group. B. subtilis was in Group 1. Group 4, 6 and 8 respectively consisted of thermophiles, halophilic or halotolerant bacilli and alkaliphilic bacilli. Group 2, 4 and 8 consisting of Bacillus species and related genera demonstrated that the current taxonomic system did not agree well with the 16S rDNA evolutionary trees. The position of Caryophanaceae and Planococcaceae in Group 2 suggested that they might be transferred into Bacillaceae, and the heterogeneity of Group 2 implied that some Bacillus species in it might belong to several new genera. Group 9 was mainly comprised of the genera (excluding Bacillus) of Bacillaceae, so some Bacillus species in Group 9: B. salarius, B. qingdaonensis and B. thermcloacae might not belong to Bacillus. Four Bacillus species, B. schlegelii, B. tusciae, B. edaphicus and B. mucilaginosus were clearly placed outside the nine groups.
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