RRC ID 34265
著者 Manickam N, Singh NK, Bajaj A, Kumar RM, Kaur G, Kaur N, Bala M, Kumar A, Mayilraj S.
タイトル Bacillus mesophilum sp. nov., strain IITR-54T, a novel 4-chlorobiphenyl dechlorinating bacterium.
ジャーナル Arch Microbiol
Abstract The taxonomic position of a Gram-positive, endospore-forming bacterium isolated from soil sample collected from an industrial site was analyzed by a polyphasic approach. The strain designated as IITR-54T matched most of the phenotypic and chemical characteristics of the genus Bacillus and represents a novel species. It was found to biodegrade 4-chlorobiphenyl through dechlorination and was isolated through enrichment procedure from an aged polychlorinated biphenyl-contaminated soil. Both resting cell assay and growth under aerobic liquid conditions using 4-chlorobiphenyl as sole source of carbon along with 0.01% yeast extract, formation of chloride ions was measured. 16S rRNA (1,489 bases) nucleotide sequence of isolated strain was compared with those of closely related Bacillus type strains and confirmed that the strain belongs to the genus Bacillus. Strain IITR-54T differs from all other species of Bacillus by at least 2.1% at the 16S rRNA level, and the moderately related species are Bacillus oceanisediminis (97.9%) followed by Bacillus infantis (97.7%), Bacillus firmus (97.4%), Bacillus drentensis (97.3%), Bacillus circulans (97.2%), Bacillus soli (97.1%), Bacillus horneckiae (97.1%), Bacillus pocheonensis (97.1%) and Bacillus bataviensis (97.1%), respectively. The cell wall peptidoglycan contained meso-diaminopimelic acid and the major isoprenoid quinone was MK-7. Major fatty acids are iso-C15:0 (32.4%) and anteiso-C15:0 (27.4%). Predominant polar lipids are diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The results of physiological and biochemical tests allowed the genotypic and phenotypic distinctiveness of strain IITR-54T with its phylogenetic relatives and suggest that the strain IITR-54T should be recognized as a novel species, for which the name Bacillus mesophilum sp. nov. is proposed. The type strain is IITR-54T (=MTCC 11060T=JCM 19208T).
巻・号 196(7)
ページ 517-23
公開日 2014-7-1
DOI 10.1007/s00203-014-0988-9
PMID 24807729
MeSH Bacillus / classification* Bacillus / genetics Bacillus / isolation & purification Bacillus / metabolism Bacterial Typing Techniques Biphenyl Compounds / metabolism Genotype Phylogeny* RNA, Ribosomal, 16S / genetics Soil Microbiology* Species Specificity
IF 1.884
引用数 8
WOS 分野 MICROBIOLOGY
リソース情報
一般微生物 JCM 13438 JCM 16506 JCM 19208