Fig. 4

The proportion of significantly different microbial metabolic pathways in the root and rhizosphere core microbiomes. A biosynthesis process of root core bacterial microbiome, B biosynthesis process of rhizosphere core bacterial microbiome, C degradation/utilization/assimilation process of root core bacterial microbiome, and D degradation/utilization/assimilation process of rhizosphere core bacterial microbiome. The center horizontal line of the box is the median of the bacterial proportion, the top and bottom of the box are the 25th and 75th quartiles, and the ends of the whiskers are the 5th and 95th quartiles. Letters *** denote significant differences of alpha diversity indices between WT sugarcane and four oilcane accession at a p-value < 0.05 as assessed by Kruskal–Wallis with post hoc Dunn’s test. WT and 17 T, 1565, 1566, and 1569 represent the wild-type sugarcane and different oilcane accessions, respectively