Relative abundance matrix of AM fungal taxa associated with serpentine and non-serpentine ecotypes of Collinsia sparsiflora growing in a common garden of serpentine and non-serpentine AM fungi.

Note: S1 plants growing in non-serpentine-only control grew poorly and resulted in insufficient root tissue mass for downstream molecular identification of AMF associates. Italicized OTUs show ecotype effects. Bold type OTUs are discussed in text.aOperational taxonomic unit,bserpentine ecotype populations,cnon-serpentine ecotype populations.