1887

Abstract

Two Gram-stain-positive, aerobic, rod-shaped, pink and light pink colony-forming bacteria, designated as Hz2 and MDT2-14, respectively, were isolated from glacier cryoconite samples. Comparisons based on 16S rRNA gene sequences showed that strains Hz2 and MDT2-14 take KR32 and J391 as their closest neighbours, respectively. The average nucleotide identity values between the two novel strains and their closest relatives were 83.56 and 93.06 %, respectively. The two strains contain MK-9(H) as their predominant menaquinone. The polar lipids of both strains were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and an unidentified glycolipid. The major fatty acids of strain Hz2 were anteiso-C, summed feature 3 (comprising C 7 and/or C 6) and iso-C, while the major fatty acids of strain MDT2-14 were anteiso-C and anteiso-C. Based on these data, we propose two novel species, sp. nov. (Hz2 = CGMCC 1.9262=NBRC 113086) and sp. nov. (MDT2-14=CGMCC 1.9882=NBRC 113089).

Keyword(s): Arthrobacter , cold-adapted and glacier
Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 32170007)
    • Principle Award Recipient: QingLiu
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2021-12-17
2022-01-17
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