Fig. 2.

Rhizosphere bacterial community structure in agricultural and native soils. Principal Coordinate Analysis (PCoA) of 16S rRNA diversity in the rhizosphere of the eight common bean accessions used in this study. a Rhizosphere bacterial community of common bean grown in agricultural (circles) and native (triangles) soils. Soil type explained 71.3% of the total variability in the bacterial community composition (PERMANOVA, P < 0.001). b PCoA including only rhizosphere bacterial communities of common bean plants grown in agricultural rhizosphere and bulk soil samples. Bean genotype explained 31.2% of the total variability in the agricultural soil (PERMANOVA, P < 0.05). c PCoA including only rhizosphere bacterial communities of bean plants grown in native rhizosphere and bulk soil samples. Bean genotype explained 28.3% of the total variability in the agricultural soil (PERMANOVA, P < 0.001). CSS transformed reads were used to calculate Bray-Curtis distances in a, b, and c. Colors represent the stage of domestication and bacterial communities from agricultural and native bulk soils