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Bacillus mesophilus sp nov., an alginate-degrading bacterium isolated from a soil sample collected from an abandoned marine solar saltern

文献类型： 外文期刊

作者： Zhou, Yan-Xia 1 ; Liu, Guo-Hong 2 ; Liu, Bo 2 ; Chen, Guan-Jun 1 ; Du, Zong-Jun 1 ;

作者机构： 1.Shandong Univ Weihai, Coll Marine Sci, Weihai 264209, Peoples R China

2.Fujian Acad Agr Sci, Agr Bioresource Inst, Fuzhou 350003, Fujian, Peoples R China

关键词： Alginate-degrading bacterium;Bacillus mesophilus sp nov.;Marine solar saltern;Soil

期刊名称：ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY （ 影响因子：2.271； 五年影响因子：2.707 ）

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收录情况： SCI

摘要： A novel Gram-stain positive, endospore-forming bacterium, designated SA4(T), was isolated from a soil sample collected from an abandoned marine solar saltern at Wendeng, Shandong Province, PR China. Cells were observed to be rod shaped, alginase positive, catalase positive and motile. The strain was found to grow at temperatures ranging from 15 to 40 A degrees C (optimum 35 A degrees C), and pH 5.0-11.0 (optimum pH 8.0) with 0-7.0 % (w/v) NaCl concentration (optimum NaCl 3.0 %). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SA4(T) belongs to the genus Bacillus and exhibits 16S rRNA gene sequence similarities of 96.6, 96.5, 96.3 and 96.2 % with Bacillus horikoshii DSM 8719(T), Bacillus acidicola 105-2(T), Bacillus shackletonii LMG 18435(T) and Bacillus pocheonensis Gsoil 420(T), respectively. The menaquinone was identified as MK-7 and the major polar lipids were identified as diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The major fatty acids detected were anteiso-C-15:0 (22.3 %), iso-C-15:0 (22.6 %), iso-C-16:0 (14.8 %) and iso-C-14:0 (14.7 %). The DNA G+C content was determined to be 42.4 mol %. Phenotypic, chemotaxonomic and genotypic properties clearly indicated that isolate SA4(T) represents a novel species within the genus Bacillus, for which the name Bacillus mesophius sp. nov. is proposed. The type strain is SA4(T) (=DSM 101000(T)=CCTCC AB 2015209(T)).

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