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10 lis 2022 · We identified which of these bacterial species are truly clonal, classified bacteria into biological species by redefining species boundaries based on gene flow, and analyzed the patterns of gene flow between species (i.e., introgression).
26 wrz 2016 · Two different bacterial genera are featured, Pseudonocardia and Salinispora, and, although the small-molecule repertoires of both have benefited from horizontal gene transfer, Pseudonocardia spp. have relied on plasmid-based tactics while Salinispora spp. have relied on chromosomally integrated genomic islands.
12 lis 2021 · Horizontal gene transfer (HGT) is arguably the most conspicuous feature of bacterial evolution. Evidence for HGT is found in most bacterial genomes.
10 lis 2022 · Results Here, we analyze the patterns of gene flow within and between >2600 bacterial species. Our results show that fewer than 10% of bacterial species are truly clonal, indicating that...
Here we synthesize recent literature demonstrating the importance of habitat and niche in structuring horizontal gene transfer. This leads to a model of ecological speciation via gradual genetic isolation triggered by differential habitat association of nascent populations.
10 lis 2022 · Interruption of gene flow can occur at various sequence identities across lineages, generally from 90 to 98% genome identity. This likely explains why a ~95% genome sequence identity threshold has empirically been judged as a good approximation to define bacterial species.
Genetic exchange plays a defining role in the evolution of many bacteria. The recent accumulation of nucleotide sequence data from multiple members of diverse bacterial genera has facilitated comparative studies that have revealed many features of this process.
