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Rapid turnover of effectors in grass powdery mildew (Blumeria graminis).

Fabrizio MenardoCoraline R PrazThomas WickerBeat Keller
Published in: BMC evolutionary biology (2017)
The CEG repertoires of related pathogens diverged dramatically in short evolutionary times because of rapid turnover and of positive selection fixing non-synonymous mutations. While signatures of positive selection on effector sequences are the expected outcome of the evolutionary "arms race" between pathogen and plant immune system, it is more difficult to infer the mechanisms and evolutionary forces that maintained an extreme turnover rate in CEG families of B. graminis for several millions of years.
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