ArticleApplied and environmental microbiology2014
Genetic divergence of bradyrhizobium strains nodulating soybeans as revealed by multilocus sequence analysis of genes inside and outside the symbiosis island.
Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Review
- Comparative genome analysis ofMicrobial genomics · 2023Article
- Review
- Characterization of symbiotic and nitrogen fixing bacteria.AMB Express · 2022Review
- Whole-Genome Sequencing ofFrontiers in microbiology · 2020Article
- Article
- Symbiotic effectiveness and ecologically adaptive traits of native rhizobial symbionts of Bambara groundnut (Vigna subterranea L. Verdc.) in Africa and their relationship with phylogeny.Scientific reports · 2019Article
- A genetically and functionally diverse group of non-diazotrophic Bradyrhizobium spp. colonizes the root endophytic compartment of Arabidopsis thaliana.BMC plant biology · 2018Article
- Distribution and Phylogeny of Microsymbionts Associated with Cowpea (Vigna unguiculata) Nodulation in Three Agroecological Regions of Mozambique.Applied and environmental microbiology · 2018Article
- Microsymbiont diversity and phylogeny of native bradyrhizobia associated with soybean (Glycine max L. Merr.) nodulation in South African soils.Systematic and applied microbiology · 2016Article
- Swimming performance of Bradyrhizobium diazoefficiens is an emergent property of its two flagellar systems.Scientific reports · 2016Article
- Rhizobia Indigenous to the Okavango Region in Sub-Saharan Africa: Diversity, Adaptations, and Host Specificity.Applied and environmental microbiology · 2014Article
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Authors and funding
8 authors.
Funding
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Abstract
The genus Bradyrhizobium has been considered to be a taxonomically difficult group. In this study, phylogenetics and evolutionary genetics analyses were used to investigate divergence levels among Bradyrhizobium strains nodulating soybeans in China. Eleven genospecies were identified by sequence analysis of three phylogenetic and taxonomic markers (SMc00019, thrA, and truA). This was also supported by analyses of eight genes outside the symbiosis island ("off-island" genes; SMc00019, thrA, truA, fabB, glyA, phyR, exoN, and hsfA). However, seven genes inside the symbiosis island ("island" genes; nifA, nifH, nodC, nodV, fixA, trpD, and rhcC2) showed contrasting lower levels of nucleotide diversity and recombination rates than did off-island genes. Island genes had significantly incongruent gene phylogenies compared to the species tree. Four phylogenetic clusters were observed in island genes, and the epidemic cluster IV (harbored by Bradyrhizobium japonicum, Bradyrhizobium diazoefficiens, Bradyrhizobium huanghuaihaiense, Bradyrhizobium liaoningense, Bradyrhizobium daqingense, Bradyrhizobium sp. I, Bradyrhizobium sp. III, and Bradyrhizobium sp. IV) was not found in Bradyrhizobium yuanmingense, Bradyrhizobium sp. II, or Bradyrhizobium elkanii. The gene flow level of island genes among genospecies is discussed in the context of the divergence level of off-island genes.
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