The definition of bacterial species is based on genomic similarities, giving rise to the operational
concept of genomic species, but the reasons of the occurrence of differentiated genomic …

The analysis of housekeeping recA gene sequences from 138 strains from 13 species or
genomic species of Agrobacterium, nine being biovar 1 genomospecies, and the others …

Biovar 1 of the genus Agrobacterium consists of at least nine genomic species that have not
yet received accepted species names. However, rapid identification of these organisms in …

Background Nitrogen fixing bacteria isolated from hot arid areas in Asia, Africa and America
but from diverse leguminous plants have been recently identified as belonging to a possible …

Limestone areas across the world develop karstic caves, which are populated by a wide range
of macro‐ and microorganisms. Many of these caves display Paleolithic art or outstanding …

Linear chromosomes are atypical in bacteria and likely a secondary trait derived from ancestral
circular molecules. Within the Rhizobiaceae family, whose genome contains at least two …

Agrobacteria are common soil bacteria that interact with plants as commensals, plant
growth promoting rhizobacteria or alternatively as pathogens. Indigenous agrobacterial …

Polychlorinated biphenyls (PCBs) are recognized as persistent organic pollutants and
accumulate in organisms, soils, waters, and sediments, causing major health and ecological …

Opines are low-molecular-weight metabolites specifically biosynthesized by agrobacteria-transformed
plant cells when plants are struck by crown gall and hairy root diseases, which …

… For a similar reason of a high risk of false positives, we did not investigate O and D block
events on the deep, long branches of the species tree (supplementary fig. S1, Supplementary …