Paraburkholderia spp. are the main rhizobial microsymbionts of Mimosa tenuiflora (Willd.) Poir. in soils of the Brazilian tropical dry forests (Caatinga biome)

Paraburkholderia atlantica is the main rhizobial symbiont of Mimosa spp. in ultramafic soils in the Brazilian Cerrado biome

“…(Bontemps et al 2010;Chen et al 2005aChen et al , b, 2006Chen et al , 2007Chen et al , 2008Estrada-de los Santos et al 2018;Mishra et al 2012;Sheu et al 2012Sheu et al , 2013. Mimosa species from the Cerrado and Caatinga biomes are associated with these diazotrophic bacteria, particularly Paraburkholderia spp., which probably play a prominent role in N cycling in these ecosystems (Bontemps et al 2010;Dias et al 2021;Pires et al 2018;Reis Jr et al 2010). These same studies suggested that environmental characteristics, rather than host species, were responsible for determining the distribution of Paraburkholderia species.…”

“…have been reported in neutral-alkaline soils (Platero et al 2016), Paraburkholderia spp. predominate in the more acidic soils (Bontemps et al 2010;Dias et al 2021;Reis Jr et al 2010). Soils with higher N-content may also favor Cupriavidus spp.…”

“…Plants inoculated with the isolates W38, W41 and W84 produced approximately four times more roots and fourteen times more shoots than uninoculated control plants. It is known that nodulated Mimosa can fix N 2 within their native environments, and therefore might make a valuable contribution to the N-cycle of the fragile ecosystems of the Cerrado and the Caatinga biomes (Dias et al 2021;Reis Jr et al 2010). These results allow us a glimpse into the possibility of using inoculated native Mimosa spp.…”

Mimosaspecies endemic to acidic soils in central Brazil are nodulated by a high diversity ofParaburkholderiagenotypes, but widespread species are nodulated byParaburkholderia,CupriavidusorRhizobiumdepending on soil characteristics

“…Alpha-rhizobia, such as Rhizobium and Bradyrhizobium , nodulate several genera across both nodulating sub-families, but nodulation by the Beta-rhizobia is so far reported in only a few legume genera, most particularly with some neotropical members of the Mimosae tribe, but also with a range of endemic papilionoid legumes in the Fynbos biome at the tip of South Africa (Elliott et al 2007b; Garau et al 2009; Gyaneshwar et al 2011; Beukes et al 2013; Howieson et al 2013; Liu et al 2014; Lemaire et al 2015, 2016; Dludlu et al 2018a, b; Mavima et al 2021, 2022). Arguably the most widely reported legume genus with which all three known Beta-rhizobial genera can nodulate is the large mimosoid genus Mimosa (Chen et al 2001, 2003a, b, 2005a, b; Barrett and Parker 2005, 2006, Elliott et al 2007a, 2009; Bontemps et al 2010; dos Reis Junior et al 2010; Gyaneshwar et al 2011, Mishra et al 2012; Lammel et al 2013, 2015; Platero et al 2016; Estrada de los Santos et al 2018; Paulitsch et al 2019a, b, 2020a, b; Mavima et al 2021; Klepa et al 2021; Dias et al 2021), but they are also reported to nodulate other mimosoid genera, such as members of the “Piptadenia Group” (Taulé et al 2012; Bournaud et al 2013, 2017), and the large neotropical genus Calliandra (Silva et al 2018; Zilli et al 2021).…”