Rhizobium pakistanensis sp nov., isolated from groundnut (Arachis hypogaea) nodules grown in rainfed Pothwar, Pakistan

文献类型: 外文期刊

第一作者: Khalid, Rabia

作者: Khalid, Rabia;Ali, Safdar;Amara, Ummay;Hayat, Rifat;Khalid, Rabia;Zhang, Yu Jing;Sui, Xin Hua;Chen, Wen Xin;Khalid, Rabia;Zhang, Yu Jing;Sui, Xin Hua;Chen, Wen Xin;Zhang, Xiao Xia

作者机构:

关键词: Arachis hypogaea;Rhizobia;Housekeeping genes;Polyphasic taxonomy

期刊名称:ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY ( 影响因子:2.271; 五年影响因子:2.707 )

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收录情况: SCI

摘要: A Gram-negative, white, non-motile, rod shaped bacterial strain BN-19(T) was isolated from a root nodule of groundnut (Arachis hypogaea) in Pakistan. Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain BN-19(T) formed a subclade in the genus Rhizobium together with Rhizobium alkalisoli CCBAU 01393(T), Rhizobium vignae CCBAU 05176(T), Rhizobium huautlense SO2(T) and Rhizobium tarimense PL-41(T) with sequence similarities of 97.5, 97.3, 97.2 and 97.1 % respectively. Sequence analysis of housekeeping genes atpD, glnII and recA (with sequence similarities of a parts per thousand currency sign92 %) confirmed the unique position of BN-19(T) in the genus Rhizobium. DNA-DNA relatedness between the strain BN-19(T) and R. alkalisoli CCBAU 01393(T), R. vignae CCBAU 05176(T), R. huautlense SO2(T) and R. tarimense PL-41(T) were 20.6, 22.5, 15.9 and 20.5 % respectively, further confirming that BN-19(T) represents a novel species in the genus Rhizobium. The DNA G + C content was 60.1 mol%. The dominant fatty acids of strain BN-19(T) were C-19:0 cyclo omega 8c, summed feature 2 (C-14:0 3OH and/or C-16:1 iso I) and summed feature 8 (C-18:1 omega 7c). Some phenotypic features also differentiate the strain BN-19(T) from the related species. On the basis of these results, strain BN-19(T) is considered to represent a novel species in the genus Rhizobium, for which the name Rhizobium pakistanensis sp. nov. is proposed. The type strain is BN-19(T) (=LMG 27895(T) = CCBAU 101086(T)).

分类号: Q1

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