Abstract:
:Two novel facultatively anaerobic bacterial strains, BL-34(T) and BL-35, isolated from groundwater contaminated by a mixture of chlorosolvents were characterized using a polyphasic approach. The two strains exhibited essentially identical taxonomic features except for a vitamin B(12) requirement by strain BL-35 for optimal growth. Phylogenetically, the isolates were affiliated with members of the family Propionibacteriaceae and were placed in a phylogenetic branch adjacent to, but distinct from, those of the genera Propionimicrobium, Propionibacterium, Luteococcus, Propioniferax and Tessaracoccus. The cells of the novel strains were Gram-positive, non-motile, non-spore-forming pleomorphic rods. They produced catalase but not oxidase, and nitrate reduction did not occur in peptone/yeast extract/glucose medium. Propionate and acetate were the predominant products of glucose fermentation. Fermentation occurred in the presence of 1,2-dichloroethane and 1,1,2-trichloroethane at concentrations up to at least 9.8 mM. The genomic DNA G+C content was 67.5-67.9 mol%. Menaquinone MK-9(H(4)) was the predominant respiratory quinone and meso-diaminopimelic acid was present in the cell-wall peptidoglycan layer. The major cellular fatty acids were C(15 : 0) and anteiso-C(15 : 0). On the basis of the results obtained in this study, strains BL-34(T) and BL-35 should be classified within a novel taxon, for which the name Brooklawnia cerclae gen. nov., sp. nov. is proposed. The type strain of Brooklawnia cerclae is BL-34(T) (=LMG 23248(T)=NRRL B-41418(T)). An additional strain, BL-35 (=LMG 23249=NRRL B-41419), was also characterized.
journal_name
Int J Syst Evol Microbiolauthors
Bae HS,Moe WM,Yan J,Tiago I,da Costa MS,Rainey FAdoi
10.1099/ijs.0.64317-0subject
Has Abstractpub_date
2006-08-01 00:00:00pages
1977-1983issue
Pt 8eissn
1466-5026issn
1466-5034journal_volume
56pub_type
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