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A bacterial strain designated MMS21-TAE1-1 T , capable of degrading paraoxon, was isolated from red pepper soil (36° 25′ 26.0″ N, 126° 25′ 47.0″ E) and subjected to polyphasic taxonomic characterisation. MMS21-TAE1-1 T was an aerobic, non-motile and Gram-stain-positive bacterium. MMS21-TAE1-1 T showed growth at 10–37 °C (optimum, 30 °C), at pH 4–10 (optimum, pH 7) and in the presence of 0–6 % NaCl (optimum, 0 %). On the basis of the results of 16S rRNA gene sequence analysis, MMS21-TAE1-1 T could be assigned to the genus Paenarthrobacter and shared the highest sequence similarities with Paenarthrobacter aurescens NBRC 12136 T (99.72 %), then with Paenarthrobacter nitroguajacolicus G2-1 T (99.65 %) and Paenarthrobacter ilicis DSM 20138 T (99.17 %). However, the results of genome-based comparison using orthologous average nucleotide identity (orthoANI) and digital DNA–DNA hybridisation indicated that MMS21-TAE1-1 T could be readily distinguished from all species of the genus with validly published names. The predominant menaquinone of MMS21-TAE1-1 T was MK-9(H 2 ). The diagnostic polar lipids were diphosphatidylglycerol and phosphatidylinositol, and unidentified glycolipids were also present. The major fatty acids were anteiso-C 15 : 0 , anteiso-C 17 : 0 , iso-C 16 : 0 and iso-C 15 : 0 . The chemotaxonomic properties of MMS21-TAE1-1 T were generally consistent with those of members of the genus Paenarthrobacter . The genome of MMS21-TAE1-1 T contained genes related to degradation of aromatic compounds. It is evident from the results of this study that strain MMS21-TAE1-1 T merits recognition as representing a novel species of the genus Paenarthrobacter , for which the name Paenarthrobacter aromaticivorans sp. nov. is proposed. The type strain is MMS21-TAE1-1 T (=KCTC 49652 T = LMG 32368 T ).
Oh et al. (Thu,) studied this question.