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Brevibacillus halotolerans sp nov., isolated from saline soil of a paddy field

文献类型： 外文期刊

作者： Song, Jinlong 1 ; Wang, Yanwei 3 ; Song, Yi 1 ; Zhao, Bingqiang 2 ; Wang, Huimin 2 ; Zhou, Shan 2 ; Kong, Delong 2 ; Guo, 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Beijing 100141, Peoples R China

2.CAAS, Minist Agr, Key Lab Microbial Resources, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

3.Minist Agr, Biogas Inst, Key Lab Dev & Applicat Rural Renewable Energy, Chengdu 610041, Peoples R Chi

关键词： Brevibacillus halotolerans sp nov.;polyphasic taxonomy;16S rRNA gene;saline soil;paddy field

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）

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收录情况： SCI

摘要： Two novel aerobic bacteria, designated strains LAM0312(T) and LAM0313, were isolated from saline soil samples collected from a paddy field in Dezhou city, Shandong Province, China. Cells of these strains were Gram-stain-positive, sporogenous, rod-shaped and motile with peritrichous flagella. The optimal growth temperature and pH were 30 degrees C and pH 7.0-8.0. Strain LAM0312(T) was able to grow in the presence of 12% (w/v) NaCl. The major fatty acids were anteiso-C-15:0 and iso-C-15:0. The dominant polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, glycolipids, five unidentitied lipids and phosphatidylmonomethylethanolamine. The cell-wall peptidoglycan was found to contain meso-diaminopimelic acid. The predominant menaquinone was identified as menaquinone-7. The G+C content of the genomic DNA of strains LAM0312(T) and LAM0313 was 45.0 and 46.0 mol%, respectively, as determined by the T-m method. 16S rRNA gene sequence similarity analysis indicated that the strains were closely related to Brevibacillus laterosporus DSM 25(T) and Brevibacillus fluminis JCM 15716(T) with 98.5 and 96.4% sequence similarity, respectively. The DNA-DNA hybridization value between strain LAM0312(T) and LAM0313 was 92 +/- 0.6% (reciprocal 90 +/- 0.2 %) and the value between strain LAM0312(T) and Brevibacillus laterosporus DSM 25(T) was 48 +/- 0.5% (reciprocal 40 +/- 0.4 %). On the basis of the phenotypic, phylogenetic and chemotaxonomic characteristics, the two strains are proposed to represent a novel species of the genus Brevibacillus, for which the name Brevibacillus halotolerans sp. nov. is proposed. The type strain is LAM0312(T) (=ACCC 06527(T)=JCM 30849(T)).

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