https://www.sciencedaily.com/releases/2016/11/161129153733.htm

This should be blatantly obvious; that commensal microbiomes undergo localized evolutionary processes, and thus inform the animal/plant evolutionary processes. Other findings here, however, are more interesting, suggesting that the microbiome may be directly involved in speciation (again, however, this seems relatively obvious).

Actual paper linked below…

https://www.sciencedaily.com/releases/2016/11/161129153733.htm