1887

Abstract

A novel Gram-stain-positive, catalase- and oxidase-positive, endospore-forming bacterium, designated GY 10110, was isolated from mangrove soil collected from Qinzhou, Guangxi province, China. Cells were aerobic, motile with peritrichous flagella and rod-shaped. The strain grew at 15–37 °C (optimum, 28 °C), at 0–3 %(w/v) NaCl (1 %) and at pH 6.0–9.0 (pH 7.0). The major fatty acids of strain GY 10110 were anteiso-C15 : 0, iso-C15 : 0 and iso-C16 : 0. The predominant menaquinone was MK-7. The cell-wall peptidoglycan contained meso-diaminopimelic acid. The polar lipid profile comprised diphosphatidylglycerol, phosphatidylethanolamine, phosphoglycolipid, glycolipid, two unidentified aminophospholipids and three unidentified phospholipids. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain GY 10110 was closely related to Falsibacillus pallidus CCTCC AB 207188 (98.0 % sequence similarity) and Bacillus oceanisediminis CGMCC 1.10115 (96.9 %), respectively. The G+C content of strain GY 10110 based on the whole genome sequence was 42.3 mol%. The novel strain showed an average nucleotide identity (ANI) value of 77.8 % and a digital DNA–DNA hybridization (dDDH) value of 15.6 % with Falsibacillus pallidus CCTCC AB 207188 based on draft genome sequences, followed by Bacillus oceanisediminis CGMCC 1.10115 with ANI and dDDH values of 75.2 and 12.8 %, respectively. The results of the polyphasic taxonomic study, including phenotypic, chemotaxonomic and phylogenetic analysis, showed that strain GY 10110 represents a novel species of the genus Falsibacillus , for which the name Falsibacillus albus sp. nov. is proposed. The type strain is GY 10110 (=CGMCC 1.13648=NBRC 113502).

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/content/journal/ijsem/10.1099/ijsem.0.003328
2019-03-06
2024-04-19
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