An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops
Poster y resumen
| Autores principales: | , , , , , , |
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| Formato: | info:ar-repo/semantics/documento de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
Asociación Argentina de Microbiología
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/13960 |
| _version_ | 1855037040749445120 |
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| author | Colla, Delfina Brignoli, Damián Iturralde, Esteban Tomás Covelli, Julieta Mariana Althabegoiti, María Julia Perticari, Alejandro Lodeiro, Aníbal Roberto |
| author_browse | Althabegoiti, María Julia Brignoli, Damián Colla, Delfina Covelli, Julieta Mariana Iturralde, Esteban Tomás Lodeiro, Aníbal Roberto Perticari, Alejandro |
| author_facet | Colla, Delfina Brignoli, Damián Iturralde, Esteban Tomás Covelli, Julieta Mariana Althabegoiti, María Julia Perticari, Alejandro Lodeiro, Aníbal Roberto |
| author_sort | Colla, Delfina |
| collection | INTA Digital |
| description | Poster y resumen |
| format | info:ar-repo/semantics/documento de conferencia |
| id | INTA13960 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Asociación Argentina de Microbiología |
| publisherStr | Asociación Argentina de Microbiología |
| record_format | dspace |
| spelling | INTA139602023-02-14T10:57:26Z An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops Colla, Delfina Brignoli, Damián Iturralde, Esteban Tomás Covelli, Julieta Mariana Althabegoiti, María Julia Perticari, Alejandro Lodeiro, Aníbal Roberto Bradyrhizobium Bradyrhizobium japonicum Inoculación Soja Crops Inoculation Soybeans Cultivos Inoculantes Poster y resumen Soybean production is very important in Argentina, where more than 20 million hectares are sowed annually with this crop. Since soybean plants possess a very high N-demand, it is crucial that this agricultural activity is developed in a sustainable way because otherwise, this crop could deplete Nnutrition from the soils, leading to erosion, compaction, and flooding. Soybean roots are nodulated by Bradyrhizobium spp., which may fix atmospheric N2 in symbiosis with the plant, thus contributing to keep the N-status of the soil. For this reason and due to their low cost, Bradyrhizobium spp. are widely used in inoculants for soybean crops. However, the efficiency of inoculants is low due to the competition exerted by bradyrhizobia resident in the soil. Among factors that affect the competition for nodulation is the self-propelled motility of the rhizobia. Previously, we developed an artificial selection method to obtain bradyrhizobial strains with higher motility. B. japonicum E109 is the strain recommend by INTA for inoculants production. Therefore, we used E109 to increase its motility, and hereby we obtained the derived B. japonicum E109 m+ strain. This strain possesses 50% more motility than its parental strain in semisolid agar medium, and has the same growth kinetics as the wild type, ruling out the possibility that the increased spreading of E109 m+ in semisolid agar be due to faster growth. B. diazoefficiens have two flagella systems, one subpolar and another lateral, characterized by flagellins of different molecular weights. The subpolar flagellum has constitutive expression and the lateral is inducible with L-arabinose as carbon source, but not with D-mannitol as carbon source. However, E109 m+ expressed both flagella with D-mannitol, as observed with SDS-PAGE of purified flagellins, in agreement with previous results obtained with B. diazoefficiens USDA 110. B. japonicum E109 m+ nodulated soybean and after that, bacteria recovered from nodules maintained the higher motility phenotype. Field trials were performed to estimate yield when the soybean plots were inoculated with E109 m+ or the E109 parental strain. Experiments were carried out in San Antonio de Areco, Province of Buenos Aires, in a soil with a competitive resident Bradyrhizobium spp. population, employing a randomized complete block design that included uninoculated controls. Grain yields were compared by ANOVA, which indicated that inoculation with E109 m+ led to significantly higher yield than inoculation with E109 wild type. Our results suggested that inoculation of soybean with improved motility strains could increase soybean yield by enhancing competition for nodulation in a sustainable way. Instituto de Microbiología y Zoología Agrícola (IMYZA) Fil: Colla, Delfina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biotecnología y Biología Molecular; Argentina. Universidad Nacional de La Plata. Instituto de Biotecnología y Biología Molecular; Argentina Fil: Brignoli, Damián.Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biotecnología y Biología Molecular; Argentina. Universidad Nacional de La Plata. Instituto de Biotecnología y Biología Molecular; Argentina Fil: Iturralde, Esteban Tomás.Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biotecnología y Biología Molecular; Argentina. Universidad Nacional de La Plata. Instituto de Biotecnología y Biología Molecular; Argentina Fil: Covelli, Julieta Mariana. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Bioquímica, Microbiología e Interacciones Biológicas en el Suelo; Argentina Fil: Althabegoiti, María Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biotecnología y Biología Molecular; Argentina. Universidad Nacional de La Plata. Instituto de Biotecnología y Biología Molecular; Argentina Fil: Perticari, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Microbiología y Zoología Agrícola; Argentina Fil: Lodeiro, Aníbal Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biotecnología y Biología Molecular; Argentina. Universidad Nacional de La Plata. Instituto de Biotecnología y Biología Molecular; Argentina Fil: Lodeiro, Aníbal Roberto. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Laboratorio de Genética; Argentina 2023-02-14T10:34:14Z 2023-02-14T10:34:14Z 2021-09-15 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/13960 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Asociación Argentina de Microbiología V Congreso Argentino de Microbiología Agrícola y Ambiental (Virtual), 15 al 17 septiembre de 2021 |
| spellingShingle | Bradyrhizobium Bradyrhizobium japonicum Inoculación Soja Crops Inoculation Soybeans Cultivos Inoculantes Colla, Delfina Brignoli, Damián Iturralde, Esteban Tomás Covelli, Julieta Mariana Althabegoiti, María Julia Perticari, Alejandro Lodeiro, Aníbal Roberto An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title | An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title_full | An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title_fullStr | An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title_full_unstemmed | An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title_short | An inoculant Bradyrhizobium strain with increased motility improves yield of soybean crops |
| title_sort | inoculant bradyrhizobium strain with increased motility improves yield of soybean crops |
| topic | Bradyrhizobium Bradyrhizobium japonicum Inoculación Soja Crops Inoculation Soybeans Cultivos Inoculantes |
| url | http://hdl.handle.net/20.500.12123/13960 |
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