Geology and climate influence rhizobiome composition of the phenotypically diverse tropical tree Tabebuia heterophylla

geologies. Other genus dominant in Volcanic dry sites, Bacillus and Verrucomicrobia_subdivi- sion_3 (Fig 5, S5 Fig). While there were no consistent differences between rhizosphere and bulk soil across all sites, there were some differences regarding the composition of bacteria between rhizosphere and bulk soil samples within every parent material type. These differences included a greater abundance of Microcoleus in bulk soils compared to rhizosphere at serpentine sites; increased Bradyrhizobium in the rhizosphere of serpentine and volcanic sites relative to matched bulk soils; or elevated Rhizobium in the rhizosphere of karst samples compared to bulk soils (S6 Fig). The analysis of Tabebuia rhizosphere and bulk soil communities exhibited patterns of taxa that were related to climate (temperature, elevation), geology (parent material), microhabitat (i.e. rhizosphere or bulk soil), and phenotypic features such as leaf morphology. Fig 5. Boxplots of significantly discriminant taxa-level analyses according to both geology and altitude, via LEfSe (Linear discriminant analysis effect size) algorithm. Taxa shown here correspond mostly to genus-level or to the lowest unclassified taxa. Phyla are in parenthesis. https://doi.org/10.1371/journal.pone.0231083.g005 PLOS ONE Rhizobiota of the tropical tree Tabebuia heterophylla PLOS ONE | https://doi.org/10.1371/journal.pone.0231083 April 7, 2020 10 / 16