Fig. 6.

Bacterial composition and structure of A. thaliana illustrated by principal coordinates (PCoA) plots based on Hellinger dissimilarity matrices for microbiota (left panels) and potential pathobiota (right panels). n = 1655 samples for the microbiota matrix and n = 1203 samples for the potential pathobiota matrix. a PCoA plot of microbiota for all samples indicates that bacterial composition is mainly structured along two axes. The (b) and (c) plots illustrate the relationships between the microbiota composition and the abundance of the two most abundant OTUs, that is, Sphingomona ssp., and Oxalobacteraceae unclassified sp., respectively. d PCoA plot of potential pathobiota for all samples indicates that bacterial composition is mainly structured along three axes. The (e) and (f) plots illustrate the relationships between the potential pathobiota composition and the abundance of the two most abundant potential pathogenic OTUs, that is, Pseudomonas viridiflava and Xanthomonas campestris, respectively. Red-to-blue color gradient indicates high-to-low OTU relative abundance per sample