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

Volume 75, Issue 1

sp. nov., isolated from the intestines of No Access

Abstract

A Gram-stain-negative, aerobic, motile, catalase-positive, oxidase-positive, short rod-shaped marine bacterium, designated as YIC-827, was isolated from Qingdao, Shandong Province, China. The results showed that cells of strain YIC-827 could grow optimally at 25–35 °C, pH 6.5–7.5 and 2–7% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequence showed that the strain YIC-827 was a member of the genus . The closest relative to this strain was KMM 300, with a similarity of 98.39%. The digital DNA–DNA hybridization value between the new isolate and phylogenetically related species is 19.6%. Strain YIC-827 could decompose sodium alginate, casein and esters (Tween 20, Tween 40, Tween 60 and Tween 80), but could not hydrolyse starch, cellulose and DNA. The fatty acid profile of a strain consists of a large number of C, C ω7c and C ω7c/ ω6c. The G+C content of the DNA of this strain was determined to be 48.93%. Based on phenotypic characteristics, phylogenetic analysis and DNA–DNA correlation data, the strain YIC-827 represents a novel species of the genus with the name sp. nov. The type strain of sp. is strain YIC-827 (=MCCC 1K08807=CGMCC 1.62085=KCTC 8212).

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): 16S rRNA gene sequence , DNA–DNA relatedness , polyphasic taxonomy and Pseudoalteromonas qingdaonensis sp. nov.
Funding
This study was supported by the:
  • Liaoning Provincial Undergraduate Colleges and Universities Basic Research Funds (Award LJ202410166008)
    • Principle Award Recipient: MaLianju
  • the Research Fund for the Taishan Scholar Project of Shandong Province of China (Award NO. tspd20210317)
    • Principle Award Recipient: HuXiaoke
  • the National Natural Science Foundation of China (Award No. 92051119)
    • Principle Award Recipient: HuXiaoke
  • Special Foundation of Science and Technology Resources Survey (Award 2019FY100700)
    • Principle Award Recipient: HuXiaoke
© 2025 The Authors
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Pseudoalteromonas qingdaonensis sp. nov., isolated from the intestines of Ilyoplax deschampsi
Int J Syst Evol Microbiol 75, 006625 (2025); https://doi.org/10.1099/ijsem.0.006625
/content/journal/ijsem/10.1099/ijsem.0.006625
/content/journal/ijsem/10.1099/ijsem.0.006625
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