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  • Title: Bacillus depressus sp. nov., isolated from soil of a sunflower field.
    Author: Wei X, Xin D, Xin Y, Zhang H, Wang T, Zhang J.
    Journal: Antonie Van Leeuwenhoek; 2016 Jan; 109(1):13-20. PubMed ID: 26452774.
    Abstract:
    A Gram-stain positive, rod-shaped, endospore-forming and aerobic bacterium, designated BZ1(T), was isolated from a soil sample collected from a sunflower field in Wuyuan county, Inner Mongolia, China. On the basis of 16S rRNA gene sequence analysis, the isolate was found to be a member of the genus Bacillus and the close phylogenetic relatives to be Bacillus gottheilii WCC 4585(T), Bacillus oceanisediminis H2(T), Bacillus mesonae FJAT-13985(T) and Bacillus horneckiae DSM 23495(T) with 98.3, 98.1, 98.0 and 97.6 % sequence similarity, respectively. Strain BZ1(T) was found to grow at 6-40 °C (optimum 30-33 °C), pH 6.0-9.0 (optimum pH 7.0) and 0-5.5 % (w/v) NaCl (optimum 0.5 %). The cell wall diamino acid of the peptidoglycan of strain BZ1(T) was identified as meso-diaminopimelic acid and the predominant respiratory quinone as MK-7. The major cellular fatty acids were found to be iso-C15:0, anteiso-C15:0 and iso-C14:0, and the polar lipids to consist of diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The novel strain was found to have a DNA G + C content 44.5 mol%. DNA-DNA hybridization with closely related strains was low. Based on phenotypic, phylogenetic and chemotaxonomic results, it is concluded that strain BZ1(T) represents a novel species within the genus Bacillus, for which we propose the name Bacillus depressus sp. nov. The type strain is BZ1(T) (= CGMCC 1.15124(T) = KCTC 33643(T)).
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