Bacillus daqingensis sp. nov., a Halophilic, Alkaliphilic Bacterium Isolated from Saline-Sodic Soil in Daqing, China

Shuang Wang; Lei Sun; Dan Wei; Baoku Zhou; Junzheng Zhang; Xuejia Gu; Lei Zhang; Ying Liu; Yidan Li; Wei Guo; Shuang Jiang; Yaqing Pan; Yufeng Wang

doi:10.1007/s12275-014-3376-x

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Bacillus daqingensis sp. nov., a Halophilic, Alkaliphilic Bacterium Isolated from Saline-Sodic Soil in Daqing, China: Shuang Wang ^1,2, Lei Sun ², Dan Wei ², Baoku Zhou ², Junzheng Zhang ³, Xuejia Gu ², Lei Zhang ², Ying Liu ², Yidan Li ², Wei Guo ⁴, Shuang Jiang ⁵, Yaqing Pan ⁶, Yufeng Wang ²; Journal of Microbiology 2014;52(7):548-553.
DOI: https://doi.org/10.1007/s12275-014-3376-x
Published online: May 30, 2014

¹Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, P. R. China, ²Institute of Soil Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences/Key Lab of Soil Environment and Plant Nutrition of Heilongjiang Province/Heilongjiang Fertilizer Engineering Research Center/Scientific Observing and Experimental Station of Heilongjiang Farmland Conservation and Agricultural environment, Ministry of Agriculture, Harbin 150086, P. R. China, ³School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China, ⁴Institute of rural energy, Heilongjiancccg Academy of Agricultural Sciences, Harbin 150086, P. R. China, ⁵Editorial Department of Journal of Northeast Agricultural University, Harbin 150030, P. R. China, ⁶Pesticides Center, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, P. R. China¹Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, P. R. China, ²Institute of Soil Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences/Key Lab of Soil Environment and Plant Nutrition of Heilongjiang Province/Heilongjiang Fertilizer Engineering Research Center/Scientific Observing and Experimental Station of Heilongjiang Farmland Conservation and Agricultural environment, Ministry of Agriculture, Harbin 150086, P. R. China, ³School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China, ⁴Institute of rural energy, Heilongjiancccg Academy of Agricultural Sciences, Harbin 150086, P. R. China, ⁵Editorial Department of Journal of Northeast Agricultural University, Harbin 150030, P. R. China, ⁶Pesticides Center, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, P. R. China

Corresponding author: Yufeng Wang , Tel: .,

Received: 15 July 2013 • Revised: 13 February 2014 • Accepted: 14 February 2014

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Abstract

An alkaliphilic, moderately halophilic, bacterium, designated strain X10-1T, was isolated from saline-alkaline soil in Daqing, Heilongjiang Province, China. Strain X10-1T was determined to be a Gram-positive aerobe with rod-shaped cells. The isolate was catalase-positive, oxidase-negative, non-motile, and capable of growth at salinities of 0–16% (w/v) NaCl (optimum, 3%). The pH range for growth was 7.5–11.0 (optimum, pH 10.0). The genomic DNA G+C content was 47.7 mol%. Its major isoprenoid quinone was MK-7 and its cellular fatty acid profile mainly consisted of anteiso-C15:0, anteiso-C17:0, iso-C15:0, C16:0, and iso-C16:0. The peptidoglycan contained meso-diaminopimelic acid as the diagnostic diamino acid. The predominant polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, and phosphatidylglycerol. Phylogenetic analysis based on 16S rRNA gene sequences showed that X10-1T is a member of the genus Bacillus, being most closely related to B. saliphilus DSM15402T (97.8% similarity) and B. agaradhaerens DSM 8721T (96.2%). DNA-DNA relatedness to the type strains of these species was less than 40%. On the basis of the phylogenetic, physiological, and biochemical data, strain X10-1T represents a novel species of the genus Bacillus, for which the name Bacillus daqingensis sp. nov. is proposed. The type strain is X10-1T (=NBRC 109404T =CGMCC 1.12295T).

Keywords: Bacillus daqingensis sp. nov.;16S rRNA gene sequence;fatty acid composition;DNA-DNA hybridization

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Bacillus daqingensis sp. nov., a Halophilic, Alkaliphilic Bacterium Isolated from Saline-Sodic Soil in Daqing, China

J. Microbiol. 2014;52(7):548-553. Published online May 30, 2014

DOI: https://doi.org/10.1007/s12275-014-3376-x

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