Open AccessTaxonomic note: speciation within the operational group Bacillus amyloliquefaciens based on comparative phylogenies of housekeeping genes
Author(s) -
Mohamad Syazwan Ngalimat,
Suriana Sabri
Publication year - 2020
Publication title -
asia-pacific journal of molecular biology and biotechnology/asia pacific journal of molecular biology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.137
H-Index - 19
eISSN - 2521-9839
pISSN - 0128-7451
DOI - 10.35118/apjmbb.2020.028.2.02
Subject(s) - rpob , biology , 16s ribosomal rna , phylogenetic tree , phylogenetics , bacillus amyloliquefaciens , housekeeping gene , evolutionary biology , clade , gene , genetics , monophyly , bacteria , gene expression
Many of the publically available Bacillus 16S rRNA genes and genomes in the NCBI database are inconsistently assigned as B. amyloliquefaciens. The highly conserved nature of the 16S rRNA gene makes it fail to differentiate species within the operational group B. amyloliquefaciens. Here, comparative phylogenies of the complete 16S rRNA, gyrB, rpoB, trpB, recA, and cheA nucleotide sequences of bacterial strains within the operational group were analyzed. As the result, the gyrB, rpoB, and trpB phylogenetic analyses showed stable topology that comprised three monophyletic clades: (i) B. amyloliquefaciens; (ii) B. siamensis; and (iii) B. velezensis. Phylogenies derived by comparison of the gyrB, rpoB, trpB, recA, and cheA with the 16S rRNA gene-derived phylogeny was significant as evaluated by the likelihood ratio test. The trpB, rpoB, and trpB gene-derived phylogenies provide a tool for speciation within the operational group B. amyloliquefaciens.