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Volume 70, Issue 2

sp. nov., isolated from faeces of Tibetan gazelles () on the Qinghai-Tibet Plateau Free

Abstract

Two strains of Gram-stain-positive, aerobic, non-spore-forming, non-motile, rod-shaped bacteria (designated dk512 and dk508) were isolated from the faeces of Tibetan gazelle () collected from the Qinghai-Tibet Plateau, PR China. The 16S rRNA gene sequences of the strains showed the highest identity to K-1 (98.0 and 97.9 % similarity, respectively). The phylogenetic analysis based on 16S rRNA gene sequences revealed that dk512 and dk508 were members of the genus , and most closely related to strains M4-8 and FCC-01. The strains grew optimally on brain-heart infusion (BHI) agar with 5.0 % (v/v) sheep blood at 30 °C, pH 7.0 and with 1.0 % (w/v) NaCl. The genome of type strain dk512 was 3.8 Mb with a G+C content of 70.6 mol%. The average nucleotide identity and digital DNA–DNA hybridization values between strain dk512 and previously characterized species were <95 and <70 %, respectively. In strain dk512, the detected primary cellular fatty acids were anteiso-C and anteiso-C, the main respiratory quinones were MK-9 (37.9 %) and MK-10 (35.7 %), and the polar lipids included diphosphatidylglycerol, phosphatidylglycerol and three unidentified glycolipids. The major cell-wall sugars were rhamnose, ribose and galactose. Alanine, glutamic acid, glycine and ornithine were in the cell-wall peptidoglycan. Based on phenotypic data and phylogenetic inference, these two strains represent a novel species of the genus , named here as sp. nov, where dk512 is designated the type strain (=CGMCC 1.16590=JCM 33494=KCTC 49313).

  • Received:
  • Accepted:
  • Revised:
  • Published Online:
Keyword(s): Microbacterium , novel species , Qinghai-Tibet Plateau and Tibetan gazelle
Funding
This study was supported by the:
  • Chinese Academy of Medical Sciences the Research Units of Discovery of Unknown Bacteria and Function (Award 2018RU010)
  • Sanming Project of Medicine in Shenzhen (Award SZSM201811071)
  • National Key R&D Program of China (Award 2018YFC1200102)
  • the National Science and Technology Major Project of China (Award 2018ZX10712001-018)
    • Principle Award Recipient: Shan Lu
  • the National Science and Technology Major Project of China (Award 2018ZX10712001-007)
    • Principle Award Recipient: Jing Yang
© 2020 The Authors
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2019-12-12
2024-05-12
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Microbacterium wangchenii sp. nov., isolated from faeces of Tibetan gazelles (Procapra picticaudata) on the Qinghai-Tibet Plateau
Int J Syst Evol Microbiol 70, 1307 (2020); https://doi.org/10.1099/ijsem.0.003912
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