Bukholderia strains promote Mimosa spp. growth but not Macroptilium atropurpureum

Araújo, Kaliane Sírio; Carvalho, Francisval de Melo; Moreira, Fátima Maria de Souza

doi:10.5935/1806-6690.20170005

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…This can be seen in various studies that tested Mimosa spp. inoculated with Burkholderia (Araújo et al, 2017) or Inga sp. inoculated with Bradyrhizobium (Silva et al, 2014;Porto et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Genetic and symbiotic characterization of rhizobia nodulating legumes in a mining area in southeast Brazil

Lopez

Teixeira

Michel

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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Identification and selection of nitrogen-fixing bacterial strains for inoculation into native leguminous tree species can assist in the recovery of degraded areas. Additionally, native strains from these areas are genetic resources adapted to these conditions and are thus suitable for selection. The aim of this study was to symbiotically and genetically characterize 18 bacterial strains from the Rhizobium and Bradyrhizobium genera isolated from Machaerium nyctitans, Platypodium elegans, and Ormosia arborea grown in a nursery in an iron mining area. Three experiments were conducted under axenic conditions in a greenhouse. The nodulation capacity of the strains was evaluated by the number (NN) and dry matter (NDM) of nodules. Symbiotic efficiency was evaluated based on the following parameters: SPAD index (SPAD), shoot dry matter (SDM), root dry matter (RDM), and total dry matter (TDM) of the plants, relative efficiency (RE), shoot nitrogen content (SNC), and total nitrogen content in the plant (TNC). The atpD and gyrB housekeeping genes and the nifH gene were sequenced for phylogenetic analysis, and the nodC and nodD symbiotic genes of the strains were amplified. Out of the 18 strains, 16 were authenticated by nodulation capacity in the species of origin. The SPAD variable allowed for the detection of differences between treatments before the SDM. Additionally, the SPAD index showed correlation with TNC, and the strain Bradyrhizobium sp., UFLA01-839, which may represent a new species, was outstanding in Machaerium nyctitans. The nifH, nodD, and nodC genes were detected in UFLA01-839.

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Section: Discussionmentioning

confidence: 99%

Genetic and symbiotic characterization of rhizobia nodulating legumes in a mining area in southeast Brazil

Lopez

Teixeira

Michel

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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“…Absence of nodules in P. reticulata and the abundance of nodules in M. brauna indicates that the growth conditions, interaction with other microorganisms and plant species may or may not stimulate nodule formation and mycorrhizal association (Pagano et al, 2009;Lahrouni et al, 2012). The symbiotic relationship with rhizobia should improve by adapting the physico-chemical characteristics of the cultivation substrates (Castro Pires et al, 2017;Prates Júnior, 2018) and selecting efficient isolates in biological nitrogen fixation (Araújo et al, 2017). Although species of subfamily Mimosoideae (P. reticulata) seem to have more records of being associated with nodulating bacteria than members of Caesalpinoideae (M. brauna), genera Melanoxylon are a noduliferous group (Sprent, 2007;.…”

Section: Discussionmentioning

confidence: 99%

Mycorrhizal inoculation and phosphorus fertilization show contrasts on native species of the Brazilian Atlantic Forest and Cerrado

Júnior¹,

Moreira²,

Silva³

et al. 2021

Revista Brasileira De Ciência Do Solo

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Restoration of degraded sites by using native plants like Plathymenia reticulata Benth. and Melanoxylon brauna Schot. is advisable. However, seedlings of both species, when raised on commercial substrates, may present low survival. This study aimed to evaluate the growth of seedlings under inoculation with arbuscular mycorrhizal fungi (AMF). The seedlings were raised on soil sampled from near an adult plant of the same species. The P. reticulata and M. brauna seedlings were grown with or without the inoculation of a mix of three species of AMF (Rhizophagus clarus, Claroideoglomus etunicatum, and Gigaspora albida), and five doses of P (0, 50, 150, 300, and 450 mg dm -3 of P). All seedlings were inoculated with Bradyrhizobium sp., isolated from each species. After 90 days, P. reticulata inoculated with AMF showed higher growth and nutrient content than those uninoculated, and the maximum plant growth was obtained when received 160 to 280 mg dm -3 of P. On the other hand, no effects of AMF inoculation or phosphate fertilization were observed on M. brauna. For both species, no effect of inoculation was observed on mycorrhizal colonization, and M. brauna, unlike P. reticulata presented a considerable number of nodules. We conclude that inoculation with AMF and P fertilization improves the growth of P. reticulata seedlings but does not promote the growth of M. brauna; presenting the necessity to investigate each species.

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“…Each isolate was inoculated in calopo in sterile long‐neck bottles containing Hoagland and Arnon () nutrient solution (Araújo et al . ). Seeds were placed on a filter paper soaked in the nutrient solution.…”

Section: Methodsmentioning

confidence: 97%

BradyrhizobiumandPseudomonasstrains obtained from coal-mining areas nodulate and promote the growth ofCalopogonium muconoidesplants used in the reclamation of degraded areas

et al. 2018

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Aims: The objective of this work was to isolate and characterize indigenous rhizobia from coal-mining areas able to efficiently nodulate and fix nitrogen in association with Calopogonium mucunoides (calopo). Methods and Results: Isolation, authentication and morphological, biochemical and molecular characterization of the autochthonous rhizobia were performed and their symbiotic efficiency (SE) evaluated. Efficient rhizobial isolates suitable for the inoculation of calopo in coal-mining regions were obtained. A total of 30 isolates were obtained after nodulation authentication, of which five presented high SE with plant-growth promoting traits such as indole-3-acetic acid production, phosphate solubilization and biofilm formation. These isolates were identified as belonging to Bradyrhizobium, Pseudomonas and Rhizobium. Conclusions: Bradyrhizobium sp. A2-10 and Pseudomonas sp. A6-05 were able to promote calopo plant growth using soil obtained from coal-mining degraded areas, thus indicating their potential as inoculants aiming at land reclamation. Significance and Impact of the Study: To our knowledge, this is the first report of Pseudomonas nodule formation in calopo. Furthermore, the results demonstrated that autochthonous rhizobia obtained from degraded soils presented high SE in calopo and possess a wide range of plant-growth promoting traits. Ultimately, they may all contribute to an increased leguminous plant growth under stress conditions. The selected rhizobia strains may be used as inoculants and present a valuable role in the development of strategies aiming to recover coal-mining degraded areas. Bacterial inoculants would greatly reduce the use of often harmful nitrogen fertilizers vastly employed in revegetation programmes of degraded areas.the removal and deposition of soil, the mixing of other materials, and the removal of native vegetation from the impacted sites. An example of coal-mining pollution is seen in the Santa Catarina coal basin, located in southern Brazil, which has been classified as critical (Stahl et al. 2002). Soils from these areas are highly degraded, with Journal of Applied Microbiology 126, 523--533

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Bukholderia strains promote Mimosa spp. growth but not Macroptilium atropurpureum

Cited by 10 publications

References 22 publications

Genetic and symbiotic characterization of rhizobia nodulating legumes in a mining area in southeast Brazil

Genetic and symbiotic characterization of rhizobia nodulating legumes in a mining area in southeast Brazil

Mycorrhizal inoculation and phosphorus fertilization show contrasts on native species of the Brazilian Atlantic Forest and Cerrado

BradyrhizobiumandPseudomonasstrains obtained from coal-mining areas nodulate and promote the growth ofCalopogonium muconoidesplants used in the reclamation of degraded areas

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