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resumen

Abstract
Native plant genetic resources have evolved from long processes of natural selection and adaptation to specific environments, and have developed tolerance to various stresses prevailing in their natural habitats via adaptive morphophysiological features. The associations between environmental stress conditions (aridity degree and salinity) prevailing in the original habitat of Argentine native Trichloris species (T. crinita and T. pluriflora) and various [ver mas...]
dc.contributor.authorMarinoni, Lorena del R.
dc.contributor.authorRichard, Geraldina A.
dc.contributor.authorBustos, Dolores Angela
dc.contributor.authorTaleisnik, Edith
dc.contributor.authorPensiero, José F.
dc.contributor.authorZabala, Juan M.
dc.dateinfo:eu-repo/date/embargoEnd/2022-12-15
dc.date.accessioned2021-12-15T10:41:35Z
dc.date.available2021-12-15T10:41:35Z
dc.date.issued2020-08-05
dc.identifier.issn2197-0025
dc.identifier.otherhttps://doi.org/10.1007/s40626-020-00182-x
dc.identifier.urihttp://hdl.handle.net/20.500.12123/10909
dc.identifier.urihttps://link.springer.com/article/10.1007/s40626-020-00182-x
dc.description.abstractNative plant genetic resources have evolved from long processes of natural selection and adaptation to specific environments, and have developed tolerance to various stresses prevailing in their natural habitats via adaptive morphophysiological features. The associations between environmental stress conditions (aridity degree and salinity) prevailing in the original habitat of Argentine native Trichloris species (T. crinita and T. pluriflora) and various biometric and physiological traits were evaluated. Trials were carried out in hydroponics in a growth chamber. Components of initial plant growth, oxidative stress expression and antioxidant activity under drought and salt stress were measured in ecotypes of both species, as well as Na+ and K+ leaf tissue concentration and excretion rates under salinity. Ecotypes from arid and semiarid origin of both species had higher drought tolerance. Regarding salt stress, T. crinita ecotype from alkali soil showed stimulated growth under salinity and an ecotype from saline soil kept high root and shoot biomass production. Although the ecotypes of T. pluriflora were not significantly salt-sensitive, none stood out. Many active salt glands on the abaxial leaf surface, high Na/K excretion ratio and high leaf tissue concentration of sodium were found for salt-tolerant ecotypes. This study identified ecotypes with tolerance to prevailing stressful conditions of natural habitat of native forage species to be introduced to plant breeding programmes for restorations purposes. Trichloris pluriflora is an unexplored genetic resource for semiarid rangeland, thus this study is the first report of drought tolerant ecotypes.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.rightsinfo:eu-repo/semantics/embargoedAccesses_AR
dc.sourceTheoretical and Experimental Plant Physiology 32 : 213-229 (2020)es_AR
dc.subjectOxidative Stresseng
dc.subjectEstrés Oxidativoes_AR
dc.subjectEstrés Osmóticoes_AR
dc.subjectOsmotic Stresseng
dc.subject.otherLocal Adaptationeng
dc.subject.otherAntioxidant Activityeng
dc.subject.otherSalt Glandseng
dc.subject.otherTrichloris Crinitaes_AR
dc.subject.otherTrichloris Plurifloraes_AR
dc.subject.otherEstrés Salinoes_AR
dc.titleDifferential response of Trichloris ecotypes from different habitats to drought and salt stresses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/acceptedVersiones_AR
dc.description.origenInstituto de Fisiología y Recursos Genéticos Vegetaleses_AR
dc.description.filFil: Marinoni, Lorena del R. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Programa de Documentación, Conservación y Valoración de la Flora Nativa; Argentinaes_AR
dc.description.filFil: Marinoni, Lorena del R. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Richard, Geraldina A. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Programa de Documentación, Conservación y Valoración de la Flora Nativa; Argentinaes_AR
dc.description.filFil: Richard, Geraldina A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Bustos, Dolores Angela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Taleisnik, Edith. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Taleisnik, Edith. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Taleisnik, Edith. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentinaes_AR
dc.description.filFil: Pensiero, José F. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Programa de Documentación, Conservación y Valoración de la Flora Nativa; Argentinaes_AR
dc.description.filFil: Pensiero, José F. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Zabala, Juan M. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias. Programa de Documentación, Conservación y Valoración de la Flora Nativa; Argentinaes_AR
dc.subtypecientifico


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