ArticleGenome biology and evolution2017
Ancestral Genome Estimation Reveals the History of Ecological Diversification in Agrobacterium.
Article in Genome biology and evolution, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 42 citations in OpenAlex.
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- Genomic analysis provides novel insights into diversification and taxonomy of Allorhizobium vitis (i.e. Agrobacterium vitis).BMC genomics · 2022Article
- Modular evolution of secretion systems and virulence plasmids in a bacterial species complex.BMC biology · 2022Article
- Different evolutionary trends form the twilight zone of the bacterial pan-genome.Microbial genomics · 2021Article
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- Destabilization of the Tumor-Inducing Plasmid from an Octopine-TypeG3 (Bethesda, Md.) · 2019Article
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- Ecological Conditions and Molecular Determinants Involved inFrontiers in plant science · 2019Review
- Exclusivity offers a sound yet practical species criterion for bacteria despite abundant gene flow.BMC genomics · 2018Article
- Failure to Recover Major Events of Gene Flux in Real Biological Data Due to Method Misapplication.Genome biology and evolution · 2018Article
Corrections and comments
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Authors and funding
15 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Horizontal gene transfer (HGT) is considered as a major source of innovation in bacteria, and as such is expected to drive adaptation to new ecological niches. However, among the many genes acquired through HGT along the diversification history of genomes, only a fraction may have actively contributed to sustained ecological adaptation. We used a phylogenetic approach accounting for the transfer of genes (or groups of genes) to estimate the history of genomes in Agrobacterium biovar 1, a diverse group of soil and plant-dwelling bacterial species. We identified clade-specific blocks of cotransferred genes encoding coherent biochemical pathways that may have contributed to the evolutionary success of key Agrobacterium clades. This pattern of gene coevolution rejects a neutral model of transfer, in which neighboring genes would be transferred independently of their function and rather suggests purifying selection on collectively coded acquired pathways. The acquisition of these synapomorphic blocks of cofunctioning genes probably drove the ecological diversification of Agrobacterium and defined features of ancestral ecological niches, which consistently hint at a strong selective role of host plant rhizospheres.
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