1887

Abstract

Two Gram-staining-positive, strictly aerobic bacilli, designated as strains Ma50-5 and Ma50-6, were isolated from the hydrothermal sediments of Manus Basin in the western Pacific Ocean. Based on 16S rRNA gene sequence, strains Ma50-5 and Ma50-6 were most closely related to (97.0 and 97.2 % identity, respectively). The 16S rRNA gene sequence identity between strains Ma50-5 and Ma50-6 was 97.4 %. The identities between strains Ma50-5 and Ma50-6 and other closely related organisms were below 97.0 %. The G+C contents of the genomic DNA of strains Ma50-5 and Ma50-6 were 43.4 and 47.6 mol%, respectively. The major fatty acids (>10 %) of both strains were iso-C and iso-C. The predominant isoprenoid quinone detected in both strains was menaquinone-7. Phylogenetic, physiological, biochemical and morphological analyses suggested that strains Ma50-5 and Ma50-6 represent two novel species of the genus , for which the names sp. nov. (type strain Ma50-5=KCTC 33881=CCTCC AB 2017020) and sp. nov. (type strain Ma50-6=KCTC 33882=CCTCC AB 2017019), respectively, are proposed.

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2018-03-01
2024-03-28
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