Fig. 2

The composition of the root mycobiomes varies according to the plant species and the habitats. For each plant species, the different root samples were merged and the relative abundances of the root fungi are indicated according to the 18S rRNA (left) or ITS2 (right) markers. We only retained the fungal lineages that may form mycorrhizal interactions with at least one plant species. Plant species are separated according to the sampled community (Grand brûlé, Plaine-des-Palmistes, or Dimitile) covering contrasted habitats. For each species, the number of individual root systems sampled is indicated in brackets. One species of Ipomoea remains taxonomically unidentified at the species level in Plaines-des-Palmistes. In each sampled community, a phylogenetic tree of the plants is represented on the left, with branch colors indicating the main plant taxonomic groups we considered in our study. The bar plots represent in colors the class and the order of each fungus. Rare taxa, representing less than 0.5% of the data, are plotted in dark grey