Novibacillus thermophilus gen. nov., sp nov., a Gram-staining-negative and moderately thermophilic member of the family Thermoactinomycetaceae
文献类型： 外文期刊
作者： Yang, Guiqin 1 ; Chen, Junhua 1 ; Zhou, Shungui 1 ;
作者机构： 1.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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 Gram-staining-negative, facultatively anaerobic bacterial strains, SG-1(T) and SG-2, were isolated from a saline soil sample and a compost sample, respectively. The cells were non-motile rods that occurred singly or in chains, and endospores were not observed under tested growth conditions. Optimum growth occurred at 50 degrees C, pH 7.5-8.0 and with 5-7% (w/v) NaCI. The DNA G+C content was 49.5-50.5 mol%. The strains contained MK-7 as the predominant menaquinone and iso-C-15:0 and anteiso-C-15:0 as the major fatty acids. The polar lipids consisted mainly of diphosphatidylglycerol and phosphatidylglycerol. The cell-wall peptidoglycan type was A1 gamma (meso-DAP direct). Phylogenetic analyses revealed that the new isolates belonged to the family Thermoactinomycetaceae, exhibiting low 16S rRNA gene sequence similarity (90.8-91.3%) to the nearest type strain, Mechercharimyces asporophorigenens YM11-542(T), and formed a well-supported lineage that was clearly distinguished from all currently described genera in this family. Based on our polyphasic taxonomic characterization, we propose that strains SG-1(T) and SG-2 represent a novel genus and species within the family Thermoactinomycetaceae, for which we propose the name Novibacillus thermophilus gen. nov., sp. nov. The type strain of Novibacillus thermophilus is SG-1(T) (=KCTC 33118(T)=CGMCC 1.12771(T)).
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