Rapid diversification of wild social groups driven by toxin-immunity loci on mobile genetic elements.

Abstract excerpt

Many species form distinct social groups that provide fitness advantages to individuals. However, the evolutionary processes that generate new social groups are not well understood. Here we examined recently diverged natural isolates of the model social bacterium, Myxococcus xanthus, to probe the genetic mechanisms and evolutionary processes of kin discrimination that occurred naturally in soil. We show that...

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