Rhizobia are some of the best-studied plant microbiota. These oligotrophic
Alphaproteobacteria or Betaproteobacteria form symbioses with their legume hosts …

Approximately 10% of bacterial genomes are split between two or more large DNA
fragments, a genome architecture referred to as a multipartite genome. This multipartite …

We announce the release of kSNP3. 0, a program for SNP identification and phylogenetic
analysis without genome alignment or the requirement for reference genomes. kSNP3. 0 is a …

Studies of microbial evolutionary dynamics are being transformed by the availability of
affordable high-throughput sequencing technologies, which allow whole-genome …

Bacterial accessory genes are genomic symbionts with an evolutionary history and future
that is different from that of their hosts. Packages of accessory genes move from strain to …

Background The sinorhizobia are amongst the most well studied members of nitrogen-fixing
root nodule bacteria and contribute substantial amounts of fixed nitrogen to the biosphere …

Legumes have an intrinsic capacity to accommodate both symbiotic and endophytic bacteria
within root nodules. For the symbionts, a complex genetic mechanism that allows mutual …

Biological species may remain distinct because of genetic isolation or ecological adaptation,
but these two aspects do not always coincide. To establish the nature of the species …

Many bacteria carry two or more chromosome-like replicons. This occurs in pathogens such
as Vibrio cholerea and Brucella abortis as well as in many N2-fixing plant symbionts …

The genetic variants that underlie microbial environmental adaptation are key components
of models of microbial diversification. Characterizing adaptive variants and the pangenomic …