Two ferric-reducing bacteria Geothrix terrae sp. nov. and Geothrix alkalitolerans sp. nov., isolated from paddy soil
文献类型： 外文期刊
作者： Han, Shuang 1 ; Tang, Rong 1 ; Yang, Shang 1 ; Xie, Cheng-Jie 1 ; Rao, Manik Prabhu Narsing 1 ; Liu, Guo-Hong 2 ; Zhou, Shun-Gui 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Resources & Environm, Fujian Prov Key Lab Soil Environm Hlth & Regulat, Fuzhou 350002, Fujian, Peoples R China
2.Fujian Acad Agr Sci, Agr Bioresources Res Inst, Fuzhou 350003, Fujian, Peoples R China
关键词： Geothrix terrae sp; nov; Geothrix alkalitolerans sp; nov; Paddy soil; Fe(III)-reducing bacteria
期刊名称：ARCHIVES OF MICROBIOLOGY （ 影响因子：2.667； 五年影响因子：2.729 ）
ISSN： 0302-8933
年卷期： 2022 年 204 卷 12 期
页码：
收录情况： SCI
摘要： Two Gram-staining-negative strains, designated SG184(T) and SG263(T) were isolated from paddy soils in Fujian Province, China. The 16S rRNA gene sequence similarities between strains SG184(T), SG263(T), and the related type strain Geothrix fermentans DSM 14018(T) were 98.6% and 99.1%, respectively. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) between the two strains and G. fermentans DSM 14018(T) were below the cut-off level (95% for ANI and 70% for dDDH) recommended as the criterion for interspecies taxon affiliation. Further, phylogenetic and phylogenomic trees indicated that strains SG184(T) and SG263(T) clustered with the member of the genus Geothrix. The menaquinone was MK-8, and the main fatty acids were iso-C-15:0 and iso-C-13:0 3OH. The genomic DNA G + C content of SG184(T) and SG263(T) was 68.07% and 68.05%, respectively. Additionally, two strains had iron reduction ability and could reduce ferrihydrite to ferrous iron. Based on the morphological, biochemical, chemotaxonomic and genome analysis, the two isolated strains represent two novel species of the genus Geothrix, for which the names Geothrix terrae sp. nov. and Geothrix alkalitolerans sp. nov. are proposed. The type strains are SG184(T) (= GDMCC1.3134 (T) = JCM39321(T)) and SG263(T) (= GDMCC 1.3316 (T) = JCM 39325(T)), respectively.
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