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Neobacillus rhizophilus sp. nov. and Neobacillus citreus sp. nov., isolated from the citrus rhizosphere soil

文献类型： 外文期刊

作者： Liu, Guo-Hong 1 ; Narsing Rao, Manik Prabhu 2 ; Chen, Qian-Qian 1 ; Shi, Huai 1 ; Che, Jian-Mei 1 ; Liu, Bo 1 ; Li, Wen-Jun 2 ;

作者机构： 1.Fujian Acad Agr Sci, Agr Bioresources Res Inst, Fuzhou 350003, Fujian, Peoples R China

2.Sun Yat Sen Univ, Sch Life Sci, Guangdong Prov Key Lab Plant Resources, State Key Lab Biocontrol, Guangzhou 510275, Peoples R China

3.Sun Yat Sen Univ, Sch Life Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Guangzhou 510275, Peoples R China

4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China

关键词： Neobacillus rhizophilus; Neobacillus citreus; Rhizosphere soil; Citrus rhizosphere

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 5 期

页码：

收录情况： SCI

摘要： Two Gram-staining positive strains, FJAT-49825(T) and FJAT-50051(T) were isolated from a citrus rhizosphere soil sample. Strains FJAT-49825(T) and FJAT-50051(T) showed the highest 16S rRNA gene sequence similarity with the type strain of Neobacillus cucumis (98.4-98.5%). The 16S rRNA gene sequence similarity between strains FJAT-49825(T) and FJAT-50051(T) was 99.8%. Strain FJAT-49825(T) optimally grew at 35 degrees C, pH 6.0 in the absence of NaCl while strain FJAT-50051(T) grew at 40 degrees C, pH 7.0 and in presence of 2% NaCl (w/v). Both strains contained meso-2,6-diaminopimelic acid as the cell-wall diamino acid. The respiratory quinone of strains FJAT-49825(T) and FJAT-50051(T) was MK-7. The polar lipids of strain FJAT-49825(T) were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, unidentified aminolipid and unidentified lipid whereas strain FJAT-50051(T) polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, unidentified phospholipid and unidentified lipid. The major fatty acids (> 10%) in both strains were iso-C-15:0 and anteiso-C-15:0. The genomic DNA G + C content of strains FJAT-49825(T) and FJAT-50051(T) were 40.8 and 41.1%, respectively. The average nucleotide identity and digital DNA-DNA hybridization value between strains FJAT-49825(T) and FJAT-50051(T) and with other members of the genus Neobacillus were lower than the cut-off value (95-96/70%) for interspecies identity. Based on the results, strains FJAT-49825(T) and FJAT-50051(T) represent two novel species of the genus Neobacillus, for which the names Neobacillus rhizophilus sp. nov. and Neobacillus citreus sp. nov. are proposed. The type strains are FJAT-49825(T) (= GDMCC 1.2592(T) = JCM 34834(T)) and FJAT-50051(T) (= GDMCC 1.2593(T) = JCM 34835(T)).

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