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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 72, Issue 12

sp. nov., a blue pigment-producing species isolated from Mount Everest No Access

Abstract

Bacteria in the genus have been found in extreme environments, e.g. glaciers, brine and mural paintings. Here, we report the discovery of a novel pink-coloured bacterium, strain QL17, capable of producing an extracellular water-soluble blue pigment. The bacterium was isolated from the soil of the East Rongbuk Glacier of Mt. Everest, China. 16S rRNA gene sequence analysis showed that strain QL17 was most closely related to the species KR32 . However, compared to KR32 and the next closest relatives, the new species demonstrates considerable phylogenetic distance at the whole-genome level, with an average nucleotide identity of <85 % and inferred DNA–DNA hybridization of <30 %. Polyphasic taxonomy results support our conclusion that strain QL17 represents a novel species of the genus . Strain QL17 had the highest tolerance to hydrogen peroxide at 400 mM. Whole-genome sequencing of strain QL17 revealed the presence of numerous cold-adaptation, antioxidation and UV resistance-associated genes, which are related to adaptation to the extreme environment of Mt. Everest. Results of this study characterized a novel psychrotolerant species, for which the name sp. nov. is proposed. The type strain is QL17 (GDMCC 1.2948=JCM 35246).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): genomics , Mount Everest , polyphasic taxonomy and psychrotolerant bacteria
Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 31870479)
    • Principle Award Recipient: WeiZhang
  • National Key R&D Program of China (Award 2019YFE0121100)
    • Principle Award Recipient: TuoChen
  • Scientific Project of Gansu Province, China (Award 20JR5RA548)
    • Principle Award Recipient: WeiZhang
  • Scientific Project of Gansu Province, China (Award 20YF3WA007)
    • Principle Award Recipient: GaosenZhang
© 2022 The Authors
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2022-12-07
2024-04-25
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Arthrobacter antioxidans sp. nov., a blue pigment-producing species isolated from Mount Everest
Int J Syst Evol Microbiol 72, 005624 (2023); https://doi.org/10.1099/ijsem.0.005624
/content/journal/ijsem/10.1099/ijsem.0.005624
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