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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 73, Issue 4

sp. nov., isolated from deep-sea sediment of the Mariana Trench No Access

Abstract

A Gram-stain-negative, aerobic, rod-shaped, non-gliding bacterial strain, designated as MT39, was isolated from a deep-sea sediment sample collected from the Mariana Trench. Strain MT39 grew optimally at 35°C and pH 7.0, and could tolerate up to 10% (w/v) NaCl. The strain was positive for catalase and negative for oxidase. The genome of strain MT39 was 4 033 307 bp, with a 41.1 mol % genomic G+C content and 3514 coding sequences. Phylogenetic analysis based on 16S rRNA gene sequences placed strain MT39 within the genus , showing the highest 16S rRNA gene sequence similarity to CGMCC 1.6308 (98.1%). The average nucleotide identity and DNA–DNA hybridization values between strain MT39 and the type strains of seven species were all less than the threshold values to discriminate bacterial species, indicating that strain MT39 is affiliated with a novel species within the genus. The major cellular fatty acids of strain MT39 were iso-C, anteiso-C and iso-C 3-OH. Polar lipids of strain MT39 included phosphatidylethanolamine, one unidentified aminolipid and four unidentified lipids. Menaquinone-6 was the only respiratory quinone in strain MT39. On the basis of the polyphasic data present in this study, strain MT39 represents a novel species of the genus , for which the name sp. nov. is proposed, with type strain being MT39 (=MCCC 1K07832=KCTC 92381).

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  • Accepted:
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Keyword(s): deep-sea sediment , polyphasic taxonomy and Salinimicrobium profundisediminis sp. nov.
Funding
This study was supported by the:
  • Fundamental Research Funds for the Central Universities (Award 202141006)
    • Principle Award Recipient: NotApplicable
  • Key R&D Program of Shandong Province (Award 2021CXGC010502)
    • Principle Award Recipient: NotApplicable
  • Major Scientific and Technological Innovation Project (MSTIP) of Shandong Province (Award 2019JZZY010817)
    • Principle Award Recipient: Yu-ZhongZhang
  • National Key Research and Development Program of China (Award 2022YFC2807501)
    • Principle Award Recipient: Hui-HuiFu
  • National Science Foundation of China (Award 9225130)
    • Principle Award Recipient: NotApplicable
  • National Science Foundation of China (Award 42076151)
    • Principle Award Recipient: NotApplicable
  • National Science Foundation of China (Award 42176156)
    • Principle Award Recipient: Hui-HuiFu
© 2023 The Authors
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2023-04-27
2025-04-24
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Salinimicrobium profundisediminis sp. nov., isolated from deep-sea sediment of the Mariana Trench
Int J Syst Evol Microbiol 73, 005877 (2023); https://doi.org/10.1099/ijsem.0.005877
/content/journal/ijsem/10.1099/ijsem.0.005877
/content/journal/ijsem/10.1099/ijsem.0.005877
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