Extended Data Fig. 7: Random forests can identify age discriminant OTUs.
From: Prolonged drought imparts lasting compositional changes to the rice root microbiome

a, Cross validation error as a function of the number of OTUs used in each model. For both compartments, the lowest error was detected when using the 65 most important taxa. b, Overlap between the age-discriminant OTUs and the drought-responsive OTUs detected in each module (Fig. 2b). c, Hierarchical clustering of the relative abundances of the age-discriminant OTUs. The heatmap displays the z-transformed mean relative abundances of each OTU across drought treatments and time points. The colours at the left end of each vertical facet indicate the longitudinal trends exhibited by each taxa. In all panels, the vertical dotted lines delimit the periods of suspended irrigation for the drought treatment.