1887

Abstract

Two novel, designated strains 29W222 and 2943, were isolated from the marine sediment from Aoshan Bay, Jimo, PR China. Growth was observed at pH 6.0–8.5 (optimum, pH 7.5) for strain 29W222, and pH 5.5–8.5 (pH 7.0) for strain 2943. Both strains displayed growth in 0.5–6 % NaCl with an optimum at 1 % for 29W222; 0.5 % for 2943. Both strains grew optimally at 33 °C. The results of phylogenetic analyses based on 16S rRNA gene sequences indicated that 29W222 and 2943 represented members of the genus and strain 29W222 was most closely related to KMM 6220 (97.9 % sequence similarity) and AK7 (95.0 %), and 2943 to AK7 (95.7 %) and KMM 6220 (94.8 %). The genomic DNA G+C contents of 29W222 and 2943 were 39.9 and 37.7 mol%, respectively. The results of chemotaxonomic analysis indicated that the sole respiratory quinone was menaquinone 7 (MK-7), and the major fatty acid was iso-C for both strains. Average nucleotide identity and average amino acid identity values between strain 29W222 and KMM 6220 were 78.9 and 83.6 %, respectively; the corresponding values between 2943 and AK7 were 69.8 and 63.6 %, respectively. Therefore, strains 29W222 and 2943 represent to two novel species of the genus , for which the names sp. nov. (29W222=KCTC 62848=MCCC 1K05194) and sp. nov. (2943=KCTC 62847= MCCC 1K05144) are proposed, respectively.

Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 32070002, 31770002)
    • Principle Award Recipient: Zong-JunDu
  • National Science and Technology Fundamental Resources Investigation Program of China (Award 2019FY100700)
    • Principle Award Recipient: Zong-JunDu
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2022-03-22
2024-04-25
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