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  • Title: Arthrobacter celericrescens sp. nov., isolated from forest soil.
    Author: Yan R, Liu D, Fu Y, Zhang Y, Ju H, Zhao J, Wang X, Zhang J, Xiang W.
    Journal: Int J Syst Evol Microbiol; 2019 Oct; 69(10):3093-3099. PubMed ID: 31329533.
    Abstract:
    A novel bacterial strain, designated NEAU-SA2T, was isolated from forest soil collected from the Zhangjiajie city, Hunan Province, PR China and characterised using a polyphasic approach. The cells were aerobic, Gram-stain-positive, non-flagellated and rod-coccus-shaped. The strain grew optimally at 28 °C, pH 7.0 and with 0 % NaCl (w/v). Phylogenetic analysis based on the 16S rRNA gene sequence indicated that the organism should be assigned to the genus Arthrobacter and was closely related to Arthrobacter cupressi DSM 24664T (98.89 %) and Arthrobacter silvisoli CCTCC AB 2017271T (98.41 %), which was further confirmed by multilocus sequence analysis. The major cellular fatty acids were anteiso-C15 : 0, anteiso-C17 : 0 and C16 : 0; MK-9(H2) was the predominant respiratory quinone. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unidentified glycolipid. The peptidoglycan type was A3α, and the cell-wall sugars were glucose and galactose. The genomic G+C content of strain NEAU-SA2T was 67.04 mol%. The average nucleotide identity values between NEAU-SA2T and A. cupressi DSM 24664T and A. silvisoli CCTCC AB 2017271T were 88.57-90.94 %. The digital DNA-DNA hybridisation values between strain NEAU-SA2T and its most closely related species were 37.00 and 41.10 %, respectively, again indicating that they belong to different taxa. Therefore, strain NEAU-SA2T represents a novel species of the genus Arthrobacter, for which the name Arthrobacter celericrescens sp. nov. is proposed. The type strain is NEAU-SA2T (=DSM 106718T=CCTCC AB 2017272T).
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