Desulfotomaculum ferrireducens sp nov., a moderately thermophilic sulfate-reducing and dissimilatory Fe(III)-reducing bacterium isolated from compost
文献类型： 外文期刊
作者： Yang, Guiqin 1 ; Guo, Junhui 2 ; Zhuang, Li 2 ; Yuan, Yong 2 ; Zhou, Shungui 2 ;
作者机构： 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, 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： A novel dissimilatory Fe(III)-reducing bacterium, designated strain GSS09(T), was isolated from a compost sample by using a solid medium containing acetate and ferrihydrite as electron donor and electron acceptor, respectively. Cells of strain GSS09(T) were anaerobic, Gram-stain-positive, motile, endospore-forming and rod-shaped. Growth occurred at 30-55 degrees C (optimum 50 degrees C), at pH 6.5-9.0 (optimum pH 7.5) and in the presence of 0-3% (w/v) NaCl (optimum 1 %). Both sulfur compounds such as sulfate, sulfite and thiosulfate and Fe(III) oxides such as ferrihydrite could be utilized as electron acceptors. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain GSS09(T) was related closely to Desulfotomaculum hydrothermale Lam5(T) (94.5% sequence similarity). The major fatty acids were C-16:0 and C-16:1 omega 7c/C-16:1 omega 6c. The G+C content of the genomic DNA was 49.1 mol%. On the basis of phylogenetic analysis, phenotypic characterization and physiological tests, strain GSS09(T) is considered to represent a novel species of the genus Desulfotomaculum, for which the name Desulfotomaculum ferrireducens sp. nov. is proposed. The type strain is GSS09(T) (= KCTC 15523(T) = MCCC 1K01254(T)).
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