Journal of Microbiology

Dan Wei

2 Articles

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; 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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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).

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Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain
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Halomonas alkalitolerans sp. nov., a Novel Moderately Halophilic Bacterium Isolated from Soda Meadow Saline Soil in Daqing, China: Shuang Wang , Qian Yang , Zhi-Hua Liu , Lei Sun , Dan Wei , Jun-Zheng Zhang , Jin-Zhu Song , Yun Wang , Jia Song , Jin-Xia Fan , Xian-Xin Meng , Wei Zhang; J. Microbiol. 2011;49(1):24-28. Published online March 3, 2011; DOI: https://doi.org/10.1007/s12275-011-0197-z

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Abstract PDF

A moderately halophilic bacterial strain 15-13T, which was isolated from soda meadow saline soil in Daqing City, Heilongjiang Province, China, was subjected to a polyphasic taxonomic study. The cells of strain 15-13T were found to be Gram-negative, rod-shaped, and motile. The required growth conditions for strain 15-13T were: 1-23% NaCl (optimum, 7%), 10-50°C (optimum, 35°C), and pH 7.0-11.0 (optimum, pH 9.5). The predominant cellular fatty acids were C18:1 ω7c (60.48%) and C16:0 (13.96%). The DNA G+C content was 67.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequence comparisons indicated that strain 15-13T clustered within a branch comprising species of the genus Halomonas. The closest phylogenetic neighbor of strain 15-13T was Halomonas pantelleriensis DSM 9661T (98.9% 16S rRNA gene sequence similarity). The level of DNA-DNA relatedness between the novel isolated strain and H. pantelleriensis DSM 9661T was 33.8%. On the basis of the phenotypic and phylogenetic data, strain 15-13T represents a novel species of the genus Halomonas, for which the name Halomonas alkalitolerans sp. nov. is proposed. The type strain for this novel species is 15-13T (=CGMCC 1.9129T =NBRC 106539T).

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Alteribacter salitolerans sp. nov., isolated from a saline-alkaline soil
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Archives of Microbiology.2022;[Epub] CrossRef
Bacillus daqingensis sp. nov., a halophilic, alkaliphilic bacterium isolated fromSaline-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
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