FIG 4.

Relative abundances of the main microbial taxa across plant compartments and genotypes. (A) RAs for bacterial families in rhizosphere (left) and root (right) compartments. (B) RAs for fungal families in rhizosphere (left) and root (right) compartments. Taxa are sorted in decreasing order according to their average RA in WT plants (only the first 10 most abundant taxonomic groups are shown). RAs in the WT as well as the respective mutants are displayed. Significant differences compared to the WT are marked with an asterisk in the color of the mutant (P < 0.05 by a Kruskal-Wallis test). Families that include known symbionts are marked in red (Phyllobacteriaceae for bacteria and Glomeromycetes for fungi). For some fungal taxa, the next-highest rank is shown when no family-level information was available. Data for ram1 AMS-deficient, nfr5 RNS-deficient, symrk AMS- and RNS-deficient, and ccamk AMS- and RNS-deficient plants are shown.