Soil origin and plant genotype structure distinct microbiome compartments in the model legume Medicago truncatula.
Shawn P BrownMichael A GrilloJustin C PodowskiKaty D HeathPublished in: Microbiome (2020)
Our results demonstrate strong host filtering effects, with rhizospheres driven by soil origin and internal plant compartments driven by host genetics, and identify several key nodule-inhabiting taxa that coexist with rhizobia in the native range. Our results set the stage for future functional genetic experiments aimed at expanding our pairwise understanding of legume-rhizobium symbiosis toward a more mechanistic understanding of plant microbiomes. Video Abstract.