| different mesorhizobium species associated with caragana carry similar symbiotic genes and have common host ranges. | fourteen strains representing 11 caragana-nodulating mesorhizobium genomic species were identified as representing mesorhizobium amorphae, mesorhizobium huakuii, mesorhizobium septentrionale and groups related to mesorhizobium plurifarium, mesorhizobium temperatum, mesorhizobium tianshanense and mesorhizobium mediterraneum by sequencing of the 16s rrna gene, 16s-23s internal transcribed spacer, partial housekeeping reca gene, and previously performed sodium dodecyl sulfate polyacrylamide gel ele ... | 2008 | 18422620 |
| Mesorhizobium silamurunense sp. nov., a novel species nodulated with Astragalus species in China. | Four rhizobial strains representing a previously defined novel group in the genus Mesorhizobium associated with Astragalus species in China were further characterized using a polyphasic approach. Phylogenetic analysis of 16S rRNA gene sequences showed that these Gram-negative bacteria belonged to the genus Mesorhizobium with Mesorhizobium plurifarium LMG 11892T as the closest neighbour sharing a sequence similarity of 99.8%. Polyphasic taxonomic methods including comparative sequence analysis of ... | 2011 | 22058324 |
| diverse mesorhizobium plurifarium populations native to mexican soils. | forty-six mesorhizobium strains associated with the leguminous plants leucaena leucocephala and sesbania herbacea in an uncultivated mexican field were characterized using a polyphasic approach. the strains were identified as mesorhizobium plurifarium based upon the close relationships with the reference strains for this species in pcr-based restriction fragment length polymorphism analyses, sequencing of 16s rrna genes, multilocus enzyme electrophoresis, and dna-dna hybridization. although the ... | 2003 | 14576977 |
| arbuscular mycorrhizal symbiosis changes the colonization pattern of acacia tortilis spp. raddiana rhizosphere by two strains of rhizobia. | the aim of the study was to assess the effect of the mycorrhizosphere of a. tortillis spp. raddiana mycorrhized with glomus intraradices on the root nodulation by sinorhizobium terangae (ors 1009) and/or mesorhizobium plurifarium (ors 1096) in two different culture substrates (sandy soil and sand). the endomycorrhizal fungus only stimulated plant growth in the sandy soil. moreover, arbuscular mycorrhizal infection enhanced the nodulation process in both culture substrates. beside the stimulatory ... | 2003 | 12545310 |
| denitrification with methane as electron donor in oxygen-limited bioreactors. | the microbial population from a reactor using methane as electron donor for denitrification under microaerophilic conditions was analyzed. high numbers of aerobic methanotrophic bacteria (3 10(7) cells/ml) and high numbers of acetate-utilizing denitrifying bacteria (2 10(7) cells/ml) were detected, but only very low numbers of methanol-degrading denitrifying bacteria (4 10(4) cells/ml) were counted. two abundant acetate-degrading denitrifiers were isolated which, based on 16s rrna analysis, were ... | 2000 | 10919339 |
| analysis of cellular fatty acids and phenotypic relationships of agrobacterium, bradyrhizobium, mesorhizobium, rhizobium and sinorhizobium species using the sherlock microbial identification system. | previous studies have demonstrated that cellular fatty acid analysis is a useful tool for identifying unknown strains of rhizobia and establishing taxonomic relationships between the species. in this study, the fatty acid profiles of over 600 strains belonging to the genera agrobacterium, bradyrhizobium, mesorhizobium, rhizobium and sinorhizobium were evaluated using the gaschromatography-based sherlock microbial identification system (mis). data collected with the mis showed that the three phyl ... | 2000 | 10758890 |
| characterization of tropical tree rhizobia and description of mesorhizobium plurifarium sp. nov. | a collection of strains isolated from root nodules of acacia species in senegal was analysed previously by electrophoresis of total cell protein, auxanographic tests, rrna-dna hydridization, 16s rrna gene sequencing, dna base composition and dna-dna hybridization [de lajudie, p., willems, a., pot, b. & 7 other authors (1994). int j syst bacteriol 44, 715-733]. strains from acacia were shown to belong to two groups, sinorhizobium terangae, and a so-called gel electrophoretic cluster u, which also ... | 1998 | 9731275 |
| phylogeny of nodulation genes and symbiotic diversity of acacia senegal (l.) willd. and a. seyal (del.) mesorhizobium strains from different regions of senegal. | acacia senegal and acacia seyal are small, deciduous legume trees, most highly valued for nitrogen fixation and for the production of gum arabic, a commodity of international trade since ancient times. symbiotic nitrogen fixation by legumes represents the main natural input of atmospheric n2 into ecosystems which may ultimately benefit all organisms. we analyzed the nod and nif symbiotic genes and symbiotic properties of root-nodulating bacteria isolated from a. senegal and a. seyal in senegal. ... | 2015 | 25315832 |
| mesorhizobium acaciae sp. nov., isolated from root nodules of acacia melanoxylon r. br. | three novel strains, ritf741t, ritf1220 and ritf909, isolated from root nodules of acacia melanoxylon in guangdong province of china, have been previously identified as members of the genus mesorhizobium, displaying the same 16s rrna gene rflp pattern. phylogenetic analysis of 16s rrna gene sequences indicated that the three strains belong to the genus mesorhizobium and had highest similarity (100.0 %) to mesorhizobium plurifarium lmg 11892t. phylogenetic analyses of housekeeping genes reca, atp ... | 2015 | 26296667 |
| mesorhizobium shonense sp. nov., mesorhizobium hawassense sp. nov. and mesorhizobium abyssinicae sp. nov., isolated from root nodules of different agroforestry legume trees. | a total of 18 strains, representing members of the genus mesorhizobium, obtained from root nodules of woody legumes growing in ethiopia, have been previously shown, by multilocus sequence analysis (mlsa) of five housekeeping genes, to form three novel genospecies. in the present study, the phylogenetic relationship between representative strains of these three genospecies and the type strains of their closest phylogenetic neighbours mesorhizobium plurifarium, mesorhizobium amorphae, mesorhizobiu ... | 2013 | 22941297 |
| [biodiversity of rhizobia associated with acacia melanoxylon grown in south china]. | this study aimed to investigate the genetic diversity of 174 isolates of symbiotic bacteria associated with acacia melanoxylon obtained from 15 sampling sites in guangdong, fujian and jiangxi provinces of china. | 2012 | 23457793 |
| tolerance of mesorhizobium type strains to different environmental stresses. | the symbiosis between rhizobia and legumes is affected by different environmental conditions. our aims were to evaluate stress tolerance of mesorhizobium species and investigate species-specific stress response mechanisms. tolerance of mesorhizobium type strains to temperature, salt and ph stress was evaluated. mesorhizobium thiogangeticum showed highest growth with 1.5% nacl and mesorhizobium ciceri at ph 5. mesorhizobium plurifarium showed higher growth at 37°c. sds-page analysis revealed chan ... | 2010 | 21152981 |
| nodulation of sesbania species by rhizobium (agrobacterium) strain irbg74 and other rhizobia. | concatenated sequence analysis with 16s rrna, rpob and fusa genes identified a bacterial strain (irbg74) isolated from root nodules of the aquatic legume sesbania cannabina as a close relative of the plant pathogen rhizobium radiobacter (syn. agrobacterium tumefaciens). however, dna:dna hybridization with r. radiobacter, r. rubi, r. vitis and r. huautlense gave only 44%, 5%, 8% and 8% similarity respectively, suggesting that irbg74 is potentially a new species. additionally, it contained no vir ... | 2009 | 19555380 |
| rhizobia with different symbiotic efficiencies nodulate acaciella angustissima in mexico, including sinorhizobium chiapanecum sp. nov. which has common symbiotic genes with sinorhizobium mexicanum. | bacteria from nodules of the legume acaciella angustissima native to the south of mexico were characterized genetically and their nodulation and competitiveness were evaluated. phylogenetic studies derived from rpob gene sequences indicated that a. angustissima is nodulated by sinorhizobium mexicanum, rhizobium tropici, mesorhizobium plurifarium and agrobacterium tumefaciens and by bacteria related to sinorhizobium americanum, sinorhizobium terangae, rhizobium etli and rhizobium gallicum. a new ... | 2009 | 19120461 |
| mesorhizobium thiogangeticum sp. nov., a novel sulfur-oxidizing chemolithoautotroph from rhizosphere soil of an indian tropical leguminous plant. | the bacterial strain sjt(t), along with 15 other mesophilic, neutrophilic and facultatively sulfur-oxidizing chemolithotrophic isolates, was isolated by enrichment on reduced sulfur compounds as the sole energy and electron source from soils immediately adjacent to the roots of clitoria ternatea, a slender leguminous herb of the lower gangetic plains of india. strain sjt(t) was able to oxidize thiosulfate and elemental sulfur for chemolithoautotrophic growth. 16s rrna and reca gene sequence-base ... | 2006 | 16403872 |
| molecular systematics of rhizobia based on maximum likelihood and bayesian phylogenies inferred from rrs, atpd, reca and nifh sequences, and their use in the classification of sesbania microsymbionts from venezuelan wetlands. | a well-resolved rhizobial species phylogeny with 51 haplotypes was inferred from a combined atpd + reca data set using bayesian inference with best-fit, gene-specific substitution models. relatively dense taxon sampling for the genera rhizobium and mesorhizobium was achieved by generating atpd and reca sequences for six type and 24 reference strains not previously available in genbank. this phylogeny was used to classify nine nodule isolates from sesbania exasperata, s. punicea and s. sericea pl ... | 2005 | 16261860 |