Figure 7.

High soil temperatures select different rhizosphere and root microbiome compositions.

Rhizosphere and root microbiome compositions of tomato plants grown at 22°C (22SR) and 36TGRooZ are similar, and both are significantly different from the microbiomes found in plants grown at 36°C (36SR).

(A) Principal coordinate analysis (PCoA) based on Bray-Curtis dissimilarities between bacterial communities in roots or (B) rhizospheres of tomato plants grown at 22°C (22SR), 36°C (36SR), or 36TGRooZ for 4 weeks.

(C) Heatmaps showing root and rhizosphere enrichment patterns of different taxonomic units (phylum, class, order, family, genus) or (D) amplicon sequence variants (ASVs) across all versus all contrasts between temperature conditions used in (A). The cells of the heatmaps are colored based on the log2 fold change estimated from a generalized linear model contrasting the abundance of each taxonomic unit at each temperature with respect to another in each contrast. Squares outlined in black represent taxonomic units at each taxonomic level that were significantly enriched (red) and depleted (blue) in each comparison (q < 0.05).