1887

Abstract

A Gram-staining-negative, rod-shaped, strictly aerobic, non-motile, non-spore-forming, orange bacterium, which was designated strain YL28-9, was isolated from sandy soil in the district of Yulin, Shaanxi province, PR China, and was characterized by using a polyphasic taxonomic approach. The optimal growth conditions of the strain were 30 °C, pH 7.0, 0 % (w/v) NaCl. Phylogenetic analysis, based on the 16S rRNA gene sequence, revealed that YL28-9 represented a member of the genus Pedobacter and showed the highest sequence similarity to Pedobacter rhizosphaerae KACC 14938 (95.1 %). The genomic DNA G+C content of this strain was 50.4 mol%, which was out of the range reported for the other strains of members of the genus Pedobacter . The only respiratory quinone detected in YL28-9 was menaquinone-7 (MK-7). The predominant cellular fatty acids were identified as iso-C15 : 0, summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c) and iso-C17 : 0 3-OH. The major polar lipid was phosphatidylethanolamine. On the basis of the results of phenotypic, genotypic, chemotaxonomic and phylogenetic analysis, YL28-9 could be distinguished from the most closely related species of the genus Pedobacter . It is evident from the derived data that YL28-9 represents a novel species of the genus Pedobacter , for which the name Pedobacter yulinensis sp. nov. is proposed. The type strain is YL28-9 (=CGMCC 1.16050=KCTC 62104). An emended description of the genus Pedobacter is proposed.

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2018-06-21
2020-12-02
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