Symbiosis as a general principle in eukaryotic evolution.

  title={Symbiosis as a general principle in eukaryotic evolution.},
  author={Angela E. Douglas},
  journal={Cold Spring Harbor perspectives in biology},
  volume={6 2}
Eukaryotes have evolved and diversified in the context of persistent colonization by non-pathogenic microorganisms. Various resident microorganisms provide a metabolic capability absent from the host, resulting in increased ecological amplitude and often evolutionary diversification of the host. Some microorganisms confer primary metabolic pathways, such as photosynthesis and cellulose degradation, and others expand the repertoire of secondary metabolism, including the synthesis of toxins that… CONTINUE READING