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Title: Rhizobium hidalgonense sp nov., a nodule endophytic bacterium of Phaseolus vulgaris in acid soil
Author: J. Yan, H. Yan, L. X. Liu, W. F. Chen, X. X. Zhang, M. M. Verastegui-Valdes, E. T. Wang and X. Z. Han
Corresponding Author: 韩晓增
Source: Archives of Microbiology
Issued Date: 2017
DOI: 10.1007/s00203-016-1281-x
Volume: 199, Issue:1, Pages:97-104
Abstract: One Gram-negative, aerobic, motile, rod-shaped bacterium, designated as FH14(T), was isolated from nodules of Phaseolus vulgaris grown in Hidalgo State of Mexico. Results based upon 16S rRNA gene (>= 99.8 % similarities to known species), concatenated sequence (recA, atpD and glnII) analysis of three housekeeping genes (>= 93.4 % similarities to known species) and average nucleotide identity (ANI) values of genome sequence (ranged from 87.6 to 90.0 % to related species) indicated the distinct position of strain FH14(T) within the genus Rhizobium. In analyses of symbiotic genes, only nitrogen fixation gene nifH was amplified that had nucleotide sequence identical to those of the bean-nodulating strains in R. phaseoli and R. vallis, while nodulation gene nodC gene was not amplified. The failure of nodulation to its original host P. vulgaris and other legumes evidenced the loss of its nodulation capability. Strain FH14(T) contained summed feature 8 (C-18:1 omega 6c/C-18:1 omega 7c, 59.96 %), C-16:0 (10.6 %) and summed feature 2 (C-12:0 aldehyde/unknown 10.928, 10.24 %) as the major components of cellular fatty acids. Failure to utilize alaninamide, and utilizing l-alanine, l-asparagine and gamma-amino butyric acid as carbon source, distinguished the strain FH14(T) from the type strains for the related species. The genome size and DNA G+C content of FH14(T) were 6.94 Mbp and 60.8 mol %, respectively. Based on those results, a novel specie in Rhizobium, named Rhizobium hidalgonense sp. nov., was proposed, with FH14(T) (=HAMBI 3636(T) = LMG 29288(T)) as the type strain.
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Content Type: 期刊论文
URI: http://ir.iga.ac.cn/handle/131322/7640
Appears in Collections:湿地与全球变化学科组_期刊论文

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