Arthrobacter nitrophenolicus sp. nov. a new 2-chloro-4-nitrophenol degrading bacterium isolated from contaminated soil
2013
Arora, Pankaj Kumar | Jain, Rakesh Kumar
Strain SJConᵀ, a 2-chloro-4-nitrophenol (2C4NP) degrading bacterium, was isolated from soil collected from a pesticide-contaminated site in Punjab, India. The strain, which stained Gram positive, displayed a rod-coccus life cycle, and possessed a type A3α peptidoglycan (L-Lys–L-Ala₃), MK-9(H2) as the major menaquinone, anteiso-C15 and iso-C15:0 as the major cellular fatty acids, and diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and a glycolipid as the major polar lipids, showed morphological and chemotaxonomic properties consistent with those reported for members of the genus Arthrobacter. Phylogenetic analysis of the 16S rRNA gene sequence of strain SJConᵀ confirmed that it was a member of this genus with Arthrobacter globiformis DSM 20124ᵀ being the closest relative (sequence similarity of 97 %). The DNA G + C content of strain SJConᵀ was 69 ± 1 mol% and DNA homology with A. globiformis DSM 20124ᵀ was 45 %, suggesting that strain SJConᵀ represented a novel species of the genus Arthrobacter, which we have named Arthrobacter nitrophenolicus sp. nov The type strain is SJConᵀ (=MTCC 10104ᵀ =DSM 23165ᵀ).
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