Nodulation of the neotropical genus Calliandra by alpha or betaproteobacterial symbionts depends on the biogeographical origins of the host species

Delineation of Paraburkholderia tuberum sensu stricto and description of Paraburkholderia podalyriae sp. nov. nodulating the South African legume Podalyria calyptrata

“…atropurpureum that are both native to the region [74,90,91,92]. It is also likely that these rhizobial species are capable of nodulating Calliandra species, as Paraburkholderia symbionts of this legume genus can nodulate the South America native species Mimosa pudica and carry nod genes that are closely related to those of Mimosa symbionts [102,116]. However, none of the P. atlantica and P. youngii strains studied by Mavima et al [74] could nodulate the CCR native legume, L. ambigua.…”

“…Phylogenetic analysis of recA was used to determine how Clusters A and B relate to the Paraburkholderia symbionts of Podalyria calyptrata reported by Lemaire et al [65] and symbionts of Calliandra species (mimosoid clade, subfamily Caesalpinioideae) reported by Zilli et al [116]. The results showed that some of the P. calyptrata symbionts appeared to be closely related to P. tuberum, P. sprentiae, P. monticola and P. podalyriae sp.…”

“…The dataset consisted of the published sequences for Paraburkholderia strains reported by Lemaire et al [65] and Zilli et al [116], and the available recA data for known Paraburkholderia species. We also included recA data that were extracted from the genome sequences of South African P. tuberum sensu lato generated here or that were previously determined.…”

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).…”

Genomic Diversity of Bradyrhizobium from the Tree Legumes Inga and Lysiloma (Caesalpinioideae-Mimosoid Clade)

“…Different rhizobial genera are found as symbionts of legume trees, and their presence in nodules might be related to abiotic conditions [27][28][29][30][31][32]. A global phylogenomic analysis of bradyrhizobia led us to predict that, in theory, there must exist over one thousand bradyrhizobial species [33].…”