1887

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 70, Issue 8

sp. nov. and sp. nov., isolated from Tibetan antelope () and plateau pika (), respectively Free

Abstract

Four novel strains (592, S592, MF47 and SMF47) were isolated from Tibetan antelopes () and plateau pikas (), respectively. The cells were aerobic, non-motile, Gram-stain- and catalase-positive, rod-shaped bacteria. The 16S rRNA gene sequences of the four strains showed highest similarities to DSM 10552 (98.1, 98.6, 98.7 and 98.7 %, respectively), and the phylogenetic analyses based on 16S rRNA gene and genomic sequences indicated that strains 592 and MF47 represent two novel species. The four isolates produced acid from -rhamnose, -xylose and cellobiose, but were unable to reduce nitrate. The DNA G+C contents of strains 592 and MF47 were 70.3 and 69.8 mol%, respectively. The digital DNA–DNA hybridization value between strains 592 and MF47 was 32.6 %, lower than the threshold of 70 %, indicating they belong to different species. The four strains’ genomes displayed less than 24.6 % DNA–DNA relatedness with all available genomes of the genus in the NCBI database, including NBRC 14897 and JCM 14732. The major fatty acids of the four strains were C ω9 and C 10-methyl, and the main polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylinositol. The predominant respiratory quinones were MK-9(H) and MK-8(H). The cell-wall peptidoglycan contained -diaminopimelic acid. Based on these genotypic, phenotypic and biochemical analyses, it is proposed that the four unidentified bacteria be classified as two novel species, sp. nov. and sp. nov. The type strains are 592 (=CGMCC1.16526=DSM 106289) and MF47 (=CGMCC 1.17444=JCM 33790), respectively.

  • Received:
  • Accepted:
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Keyword(s): Aeromicrobium chenweiae , Aeromicrobium yanjiei , novel species , plateau pika and Tibetan antelope
Funding
This study was supported by the:
  • Research Units of Discovery of Unknown Bacteria and Function (Award 2018RU010)
    • Principle Award Recipient: Jianguo Xu
  • Sanming Project of Medicine in Shenzhen (Award SZSM201811071)
    • Principle Award Recipient: Jianguo Xu
  • National Key R&D Program of China (Award 2018YFC1200102)
    • Principle Award Recipient: Dong Jin
  • National Science and Technology Major Project of China (Award 2018ZX10712001-018)
    • Principle Award Recipient: Shan Lu
  • National Science and Technology Major Project of China (Award 2018ZX10712001-007)
    • Principle Award Recipient: Jing Yang
© 2020 The Authors
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2020-07-21
2024-12-08
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Aeromicrobium chenweiae sp. nov. and Aeromicrobium yanjiei sp. nov., isolated from Tibetan antelope (Pantholops hodgsonii) and plateau pika (Ochotona curzoniae), respectively
Int J Syst Evol Microbiol 70, 4683 (2020); https://doi.org/10.1099/ijsem.0.004331
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