The diversity of rhizobia nodulating Mimosa spp. in eleven states of Brazil covering several biomes is determined by host plant, location, and edaphic factors

The objective of this study was to examine the microsymbionts of Mimosa spp. (and some other mimosoids) in eleven Brazilian states encompassing climates ranging from tropical to subtropical, humid to semi-arid, and with varying soil characters. Nodules were sampled from more than 40 Mimosa taxa, many of them endemics or biome-restricted, but particular attention was made to sample nodules from the widespread species M. pudica at all locations.