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  • Title: Bacillus praedii sp. nov., isolated from purplish paddy soil.
    Author: Liu B, Liu GH, Sengonca C, Schumann P, Wang JP, Zhu YJ, Liu QY, Wang MK.
    Journal: Int J Syst Evol Microbiol; 2017 Aug; 67(8):2823-2828. PubMed ID: 28820088.
    Abstract:
    A Gram-stain-positive, rod-shaped, endospore-forming, aerobic bacterium, designated strain FJAT-25547T, was isolated from the purplish paddy soil collected from Linshan Township, Yanting Prefecture of Sichuan Province in PR China (31° 16' N 105° 27' E). Growth was achieved aerobically at temperatures between 15 and 40 °C (optimum 30 °C), with between 0 and 10.0 % NaCl (w/v) (optimum 4 %) and in the range of pH 5.0-12.0 (optimum pH 9.0). The cell-wall peptidoglycan contained meso-diaminopimelic acid, and the main isoprenoid quinone was MK-7. The major fatty acids were iso-C15 : 0 (55.4 %), anteiso-C15 : 0 (22.2 %), iso-C16 : 0 (5.1 %) and iso-C14 : 0 (6.5 %). The main polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain FJAT-25547T was a member of the genus Bacillus and was most closely related to Bacillus horneckiae DSM 23495T (97.7 % similarity), Bacillus eiseniae A1-2T (97.5 %), Bacillus mesophilum IITR-54T (97.2 %) and Bacillus kochii WCC 4582T (97.0 %). The average nucleotide identity value between strain FJAT-25547T and the type strain of the most closely related species, B. horneckiae DSM 23495T, was 77.7 %, less than the proposed cut-off value of 96.0 % for differentiating species within the genus. The in silico DNA-DNA hybridization value of strain FJAT-25547T with the most closely related species was 22.7 %, <70 %, again indicating they belong to different taxa. The DNA G+C content of strain FJAT-25547T was 39.1 mol%. This taxono-genomics study revealed that strain FJAT-25547T represents a novel species of the genus Bacillus for which the name Bacillus praedii sp. nov. (type strain FJAT-25547T=CCTCC AB 2015208T=DSM 101002T) is proposed.
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