Diverse genotypes of Bradyrhizobium nodulate herbaceous Chamaecrista (Moench) (Fabaceae, Caesalpinioideae) species in Brazil

Santos, José Miguel Ferreira dos; Alves, Patricia Alves Casaes; Silva, Verônica Cordeiro; Rhem, Mariana Ferreira Kruschewsky; James, Euan K.; Gross, Eduardo

doi:10.1016/j.syapm.2016.12.004

Cited by 35 publications

(40 citation statements)

References 51 publications

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“…in the Semi-Arid region of the Bahia State (Northeastern, Brazil) was also not clear. 47 On the other hand, the differentiation of Bradyrhizobium isolates was observed in several crop species along the Okavango Valley, from Botswana to Angola. 48 …”

Section: Discussionmentioning

confidence: 99%

Phenotypic, genetic and symbiotic characterization of Erythrina velutina rhizobia from Caatinga dry forest

Rodrigues

Silva

Cavalcanti

et al. 2018

Brazilian Journal of Microbiology

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Erythrina velutina (“mulungu”) is a legume tree from Caatinga that associates with rhizobia but the diversity and symbiotic ability of “mulungu” rhizobia are poorly understood. The aim of this study was to characterize “mulungu” rhizobia from Caatinga. Bacteria were obteined from Serra Talhada and Caruaru in Caatinga under natural regeneration. The bacteria were evaluated to the amplification of nifH and nodC and to metabolic characteristics. Ten selected bacteria identified by 16S rRNA sequences. They were tested in vitro to NaCl and temperature tolerance, auxin production and calcium phosphate solubilization. The symbiotic ability were assessed in an greenhouse experiment. A total of 32 bacteria were obtained and 17 amplified both symbiotic genes. The bacteria showed a high variable metabolic profile. Bradyrhizobium (6), Rhizobium (3) and Paraburkholderia (1) were identified, differing from their geographic origin. The isolates grew up to 45 °C to 0.51 mol L−1 of NaCl. Bacteria which produced more auxin in the medium with l-tryptophan and two Rhizobium and one Bradyrhizobium were phosphate solubilizers. All bacteria nodulated and ESA 90 (Rhizobium sp.) plus ESA 96 (Paraburkholderia sp.) were more efficient symbiotically. Diverse and efficient rhizobia inhabit the soils of Caatinga dry forests, with the bacterial differentiation by the sampling sites.

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Section: Discussionmentioning

confidence: 99%

Phenotypic, genetic and symbiotic characterization of Erythrina velutina rhizobia from Caatinga dry forest

Rodrigues

Silva

Cavalcanti

et al. 2018

Brazilian Journal of Microbiology

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“…The other genera isolated have been registered in the literature as endophytic bacteria and plant growth promotors (Chen et al, 2001;Costa et al, 2016;Flores-Félix et al, 2014;Guglielmetti et al, 2013;Guimarães et al, 2012;Jaramillo et al, 2013;Mendis et al, 2018;Souza et al, 2015;Wang et al, 2017;Zhang et al, 2016;Zhao et al, 2017). Although the symbiotic relationships of these communities with siratro may be different from those with native Leguminosae species from each phytophysiognomy (Ribeiro et al, 2017;Santos et al, 2017), even rhizobia can act as PGPR by means of various processes, contributing to the sustainability of the ecosystems (Costa et al, 2016;Marra et al, 2012;Oliveira-Longatti et al, 2014).…”

Section: Groups Strainsmentioning

confidence: 99%

“…In addition, it represents genetic resources with potential for biotechnological application, such as plant growthpromoting rhizobacteria (PGPR). These bacteria can be isolated directly from nodules on plants found in the environment under study (Moreira et al, 1993;Moreira et al, 1998;Santos et al, 2017) or indirectly through the use of promiscuous species of trap plants, such as Macroptilium artropurpureum (Borges et al, 2016;Jesus et al, 2005;Lima et al, 2009), Mimosa tenuiflora (Silva et al, 2017), Vigna unguiculata (Castro et al, 2017), Phaseolus vulgaris (Dall'Agnol et al, 2016), Glycine max (Ribeiro et al, 2015), and other species.…”

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confidence: 99%

Plant growth‐promoting rhizobacterial communities from an area under the influence of iron mining and from the adjacent phytophysiognomies which have high genetic diversity

et al. 2020

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We evaluated symbiotic (rhizobia) and non-symbiotic efficiency and the diversity of native communities of plant growth-promoting rhizobacteria (PGPR) in soil samples from an area in recovery after iron mining (RA) and from adjacent phytophysiognomies (Ironstone Outcrops, Neotropical Savanna, Atlantic Forest) in the Quadrilátero Ferrífero region, MG, Brazil, in two climate seasons. Greenhouse experiments were conducted with siratro (Macroptilium atropurpureum) as a trap plant. The SPAD index in siratro was more effective in detecting the difference between the symbiotic efficiencies of the communities of PGPR than shoot dry matter, with readings of the SPAD index greater in RA. Genetic diversity, of 327 strains evaluated by partial sequencing of the 16S rRNA gene, showed 29 genera in the dry season and 19 in the rainy season, among these genera some recognized as nodulating and endophytes, and others potentially endophytes. Genera belonging to the phyla Acidobacteria, Actinobacteria, Bacteroidetes, Firmicutes, and Proteobacteria were found. The nodule-forming genera Bradyrhizobium and Rhizobium and the endophytic Paenibacillus were those of highest occurrence in both seasons and in all phytophysiognomies. The greater symbiotic efficiency and the high genetic diversity of the rhizobacterial community found in RA indicate that soil rehabilitation is effectively in process. As most of native legume species form symbiosis with Rhizobium and mainly Bradyrhizobium, these bacterial communities are an important source of potential inoculant strains, as well as, a relevant feature for the successful establishment of diverse legumes for revegetation purposes.

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“…The analysis of nodA , nodC, as well as nifD and nifH gene sequences revealed a high level of diversity within the genus Bradyrhizobium [ 21 , 60 , 70 , 82 , 114 , 126 , 127 , 128 , 129 , 130 , 131 ]. In recently published phylogenies of nodA and nifD symbiotic genes, Bradyrhizobium strains formed 16 major groups, referred to as Clade I–Clade XVI [ 28 ].…”

Section: Phylogeny Of Symbiotic Loci Of Genisteae-nodulating mentioning

confidence: 99%

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

Stępkowski

Banasiewicz

Granada

et al. 2018

Genes

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The legume tribe Genisteae comprises 618, predominantly temperate species, showing an amphi-Atlantic distribution that was caused by several long-distance dispersal events. Seven out of the 16 authenticated rhizobial genera can nodulate particular Genisteae species. Bradyrhizobium predominates among rhizobia nodulating Genisteae legumes. Bradyrhizobium strains that infect Genisteae species belong to both the Bradyrhizobium japonicum and Bradyrhizobium elkanii superclades. In symbiotic gene phylogenies, Genisteae bradyrhizobia are scattered among several distinct clades, comprising strains that originate from phylogenetically distant legumes. This indicates that the capacity for nodulation of Genisteae spp. has evolved independently in various symbiotic gene clades, and that it has not been a long-multi-step process. The exception is Bradyrhizobium Clade II, which unlike other clades comprises strains that are specialized in nodulation of Genisteae, but also Loteae spp. Presumably, Clade II represents an example of long-lasting co-evolution of bradyrhizobial symbionts with their legume hosts.

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Diverse genotypes of Bradyrhizobium nodulate herbaceous Chamaecrista (Moench) (Fabaceae, Caesalpinioideae) species in Brazil

Cited by 35 publications

References 51 publications

Phenotypic, genetic and symbiotic characterization of Erythrina velutina rhizobia from Caatinga dry forest

Phenotypic, genetic and symbiotic characterization of Erythrina velutina rhizobia from Caatinga dry forest

Plant growth‐promoting rhizobacterial communities from an area under the influence of iron mining and from the adjacent phytophysiognomies which have high genetic diversity

Phylogeny and Phylogeography of Rhizobial Symbionts Nodulating Legumes of the Tribe Genisteae

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