期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 58, 期 -, 页码 692-698出版社
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.65472-0
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A detailed classification of a novel bacterial strain, designated F11(T), capable of degrading fluorobenzene as a sole carbon and energy source, was performed by using a polyphasic approach. This Gram-negative, rod-shaped, non-motile, non-spore-forming, aerobic bacterium was isolated from a sediment sample collected from an industrially contaminated site in northern Portugal. The predominant whole-cell fatty acids were C-19:0 cyclo omega 8c, C-16:0, C-18:1 omega 7c, C-18:0, C-18:0 3-OH and C-16:0 3-OH. The G + C content of the DNA was 62.9 mol% and the major respiratory quinone was ubiquinone 10 (UQ-10). 16S rRNA gene sequence analysis revealed that strain F11(T) was a member of the class Alphaproteobacteria and was phylogenetically related to the genus Labrys, having sequence similarities of 95.6 and 93.1% to the type strains of Labrys monachus and Labrys methylaminiphilus, respectively. DNA-DNA hybridization experiments revealed levels of relatedness of < 70% between strain F11(T) and the type strains of L. monachus and L. methylaminiphilus (38.6 and 34.1%, respectively), justifying the classification of strain F11(T) as representing a novel species of the genus Labrys. The name Labrys portucalensis sp. nov. is proposed for this organism. The type strain is F11(T) (=LMG 23412(T)=DSM 17916(T)).
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