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Abstract
The establishment of a symbiotic interaction involves a signal exchange between the host legume (flavonoids) and the nitrogen-fixing rhizobia (nodulation factors (NFs)). Likewise, abiotic stress conditions, such as salinity and drought, strongly reduce the nodulation process, possibly affecting also the signal exchange. In this work we characterized the structure and biological activity of NFs produced by Bradyrhizobium japonicum USDA 138 under control, [ver mas...]
dc.contributor.authorMuñoz, Nacira Belen
dc.contributor.authorSoria Díaz, Maria Eugenia
dc.contributor.authorManyani, Hamid
dc.contributor.authorContreras Sánchez Matamoros, Rocío
dc.contributor.authorGil Serrano, Antonio
dc.contributor.authorMegías, Manuel
dc.contributor.authorLascano, Hernan Ramiro
dc.date.accessioned2018-11-02T12:16:07Z
dc.date.available2018-11-02T12:16:07Z
dc.date.issued2014-02
dc.identifier.issn0178-2762
dc.identifier.issn1432-0789
dc.identifier.otherhttps://doi.org/10.1007/s00374-013-0843-1
dc.identifier.urihttps://link.springer.com/article/10.1007/s00374-013-0843-1
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3765
dc.description.abstractThe establishment of a symbiotic interaction involves a signal exchange between the host legume (flavonoids) and the nitrogen-fixing rhizobia (nodulation factors (NFs)). Likewise, abiotic stress conditions, such as salinity and drought, strongly reduce the nodulation process, possibly affecting also the signal exchange. In this work we characterized the structure and biological activity of NFs produced by Bradyrhizobium japonicum USDA 138 under control, salt, and osmotic stress conditions. This strain is the most widely used in Argentine soybean culture; under control conditions, it produces a mixture of four types of NFs (V(C16:0,MeFuc), V(C18:1,MeFuc), IV(C18:1), and V(C18:1,Ac,MeFuc)). Interestingly, under stress conditions, this strain produces new types of NFs, one common for both stress conditions (V(C16:1,MeFuc)) and another one only present under salt stress (IV(C18:1,MeFuc)). All mixtures of NFs, extracted from control, salt, and osmotic stress conditions, showed biological activity in soybean plants, such as root hair deformation, and the radical application of purified NFs induced systemic differences in dry matter accumulation. The inoculation of soybean with genistein-induced bacteria cultured under both control and stress conditions had a positive effect on the number of nodules formed and in some cases on dry matter accumulation. These responses are not related to changes in chlorophyll fluorescence or greenness index.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceBiology and Fertility of Soils 50 (2) : 207–215 (February 2014)es_AR
dc.subjectSojaes_AR
dc.subjectSoybeanseng
dc.subjectBradyrhizobium japonicumes_AR
dc.subjectEstrés Osmóticoes_AR
dc.subjectOsmotic Stresseng
dc.subjectNodulaciónes_AR
dc.subjectRoot Nodulationeng
dc.subjectEstrés Abióticoes_AR
dc.subjectAbiotic Stresseng
dc.subjectContenido de Materia Secaes_AR
dc.subjectDry Matter Contenteng
dc.subject.otherEstres Salinoes_AR
dc.titleStructure and biological activities of lipochitooligosaccharide nodulation signals produced by Bradyrhizobium japonicum USDA 138 under saline and osmotic stresses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenInstituto de Fisiología y Recursos Genéticos Vegetaleses_AR
dc.description.filFil: Muñoz, Nacira Belen. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Cátedra de Fisiología Vegetal; Argentinaes_AR
dc.description.filFil: Soria Díaz, Maria Eugenia. Universidad de Sevilla. Centro de Investigación, Tecnología e Innovación. Servicio de Espectrometría de Masas; España. Universidad de Sevilla. Departamento de Química Orgánica; Españaes_AR
dc.description.filFil: Manyani, Hamid. Universidad de Sevilla. Departamento de Microbiología y Parasitología; Españaes_AR
dc.description.filFil: Contreras Sánchez Matamoros, Rocío. Universidad de Sevilla. Departamento de Química Orgánica; Españaes_AR
dc.description.filFil: Gil Serrano, Antonio. Universidad de Sevilla. Departamento de Química Orgánica; Españaes_AR
dc.description.filFil: Megías, Manuel. Universidad de Sevilla. Departamento de Microbiología y Parasitología; Españaes_AR
dc.description.filFil: Lascano, Hernan Ramiro. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Cátedra de Fisiología Vegetal; Argentinaes_AR
dc.subtypecientifico


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