Figure 2.

(a) The relative abundance of each of the top nine most abundant bacterial classes for each pairwise combination of sample type, time point and treatment. (b) The fold enrichment under drought of each of the top nine most abundant bacterial classes for each pairwise combination of sample type and time point. (c) Heatmap displaying the fold enrichment under drought (yellow) or control (blue) in roots for all bacterial genera (x-axis) belonging to the top nine most abundant classes and identified as statistically enriched in either drought or control treatments through indicator species analysis. Enrichment is shown independently for each of the 19 host species (y-axis). The class that each genus belongs to is indicated by the colored bar above its name (colors represent the same class as in (a) and (b)). Enrichment is shown independently for each of the 19 host species (y-axis). Abbreviations correspond to host species as follows (Out=Solanum lycopersicum, Et=Eragrostis tef, Pa=Pennisetum americanum, Zm=Zea mays, Bb=Bothriochloa bladhii, Ms=Miscanthus sinensis, Sn=Sorghastrum nutans, Sl=Sorghum laxiflorum, SbH=Sorghum bicolor H, SbA=Sorghum bicolor A, Bd=Brachypodium distachyon, Fa=Festuca arundinaceae, As=Avena sativa, Hv=Hordeum vulgare, Sc=Secale cereale, Tm=Triticum monococcum, Tt=Triticum turgidum, TaG=Triticum aestivum G, TaB=Triticum aestivum B).