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Abstract
Agricultural weeds are plants well-adapted to agricultural environments interfering directly and indirectly with crop production and causing important economic losses worldwide. Crop-wild hybridization is one of the main forces that have ruled weed evolution along with adaptation to agricultural (or benign) environments. Considering the competing demands for resources in any plant, adaptation to agricultural environments might result in an increase in [ver mas...]
dc.contributor.authorPresotto, Alejandro Daniel
dc.contributor.authorHernández, Fernando
dc.contributor.authorDíaz, Marina
dc.contributor.authorFernández Moroni, Ivana
dc.contributor.authorPandolfo, Claudio Ezequiel
dc.contributor.authorBasualdo, Jessica
dc.contributor.authorCuppari, Selva Yanet
dc.contributor.authorCantamutto, Miguel Angel
dc.contributor.authorPoverene, María Mónica
dc.date.accessioned2018-05-03T13:41:55Z
dc.date.available2018-05-03T13:41:55Z
dc.date.issued2017-11
dc.identifier.issn0167-8809
dc.identifier.otherhttps://doi.org/10.1016/j.agee.2017.08.003
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0167880917303535
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2314
dc.description.abstractAgricultural weeds are plants well-adapted to agricultural environments interfering directly and indirectly with crop production and causing important economic losses worldwide. Crop-wild hybridization is one of the main forces that have ruled weed evolution along with adaptation to agricultural (or benign) environments. Considering the competing demands for resources in any plant, adaptation to agricultural environments might result in an increase in growth but with lower tolerance to stress. In Argentina, most of the non-native H. annuus populations grow on roadsides, ditches, fences, hedgerows (ruderals), but there are also a few cases of H. annuus growing in agricultural field as weeds (agrestals). We asume that weediness of these agrestal biotypes came after crop hybridization as result of growth-stress tolerance trade-offs. Ruderal, agrestal (with evidence of crop introgression), and crop biotypes were contrasted under studies of drought and defoliation stresses, as well as for plant growth under non-stressful conditions and sequences of stress-related genes. The agrestal biotype was less tolerant to defoliation and drought than the ruderal biotype. Drought tolerance variation was largely explained by plant height rate (growth) and defoliation tolerance variation was mainly explained by biomass accumulation (resource allocation). Agrestal biotype sequences of two genes encoding transcription factors involved in stress response, DREB2 and NAC, showed evidence of positive selection in the crop direction. Therefore, selection in the agricultural environment combined with crop hybridization driver the evolution of a well-adapted genetic variant of H. annuus with fast growth but reduced stress tolerance.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceAgriculture, ecosystems & environment 249 : 12-21. (November 2017)es_AR
dc.subjectHelianthus Annuuses_AR
dc.subjectHibridaciónes_AR
dc.subjectHybridizationeng
dc.subjectMalezases_AR
dc.subjectWeedseng
dc.subjectPlantas Silvestreses_AR
dc.subjectWild Plantseng
dc.subjectEstreses_AR
dc.subjectStresseng
dc.subjectGenotiposes_AR
dc.subjectGenotypeseng
dc.subject.otherGirasoles_AR
dc.titleCrop-wild sunflower hybridization can mediate weediness throughout growth-stress tolerance trade-offseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenEEA Hilario Ascasubies_AR
dc.description.filFil: Presotto, Alejandro Daniel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Hernández, Fernando. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Díaz, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentinaes_AR
dc.description.filFil: Fernández Moroni, Ivana. Universidad Nacional del Sur. Departamento de Agronomía; Argentinaes_AR
dc.description.filFil: Pandolfo, Claudio Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Basualdo, Jessica. Universidad Nacional del Sur. Departamento de Agronomía; Argentinaes_AR
dc.description.filFil: Cuppari, Selva Yanet. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Cantamutto, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentinaes_AR
dc.description.filFil: Poverene, María Mónica. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.subtypecientifico


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