Fig. 2

Functional composition of citrus root-associated microbiome. a Venn diagram depicting number of KOs identified in rhizosphere and rhizoplane microbiomes from healthy and HLB-diseased samples. b Heatmap exhibiting functional composition similarity between samples based on relative abundance data at KO level. c Rhizosphere- to rhizoplane-enriched and depleted functions with varying relative abundance and expression levels between healthy and HLB rhizoplane samples. Dark gray: rhizoplane-enriched function; light blue: rhizoplane-depleted; genes in green: increased relative abundance at the DNA level; genes in purple: increased expression level; genes in red: increased abundance and expression level. HLB.P (blue): rhizoplane samples from HLB trees; H.P (red): rhizoplane samples from healthy trees; HLB.S (green): rhizosphere samples from HLB trees; H.S (yellow): rhizosphere samples from healthy trees