Differential hormonal and gene expression dynamics in two inbred sunflower lines with contrasting dormancy level

dc.creatorRosello, Paula Luciana
dc.creatorVigliocco, Ana Edit
dc.creatorAndrade, Andrea Mariela
dc.creatorRiera, Natalí Vanesa
dc.creatorCalafat, Mario Jose
dc.creatorMolas, María Lía
dc.creatorAlemano, Sergio Gabriel
dc.date2016-02
dc.date.accessioned2023-08-31T00:14:49Z
dc.date.available2023-08-31T00:14:49Z
dc.identifierhttp://hdl.handle.net/11336/179538
dc.identifierRosello, Paula Luciana; Vigliocco, Ana Edit; Andrade, Andrea Mariela; Riera, Natalí Vanesa; Calafat, Mario Jose; et al.; Differential hormonal and gene expression dynamics in two inbred sunflower lines with contrasting dormancy level; Elsevier France-Editions Scientifiques Medicales Elsevier; Plant Physiology and Biochemistry; 102; 2-2016; 133-140
dc.identifier0981-9428
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543239
dc.descriptionSeed germination and dormancy are tightly regulated by hormone metabolism and signaling pathway. We investigated the endogenous content of abscisic acid (ABA), its catabolites, and gibberellins (GAs), as well as the expression level of certain ABA and GAs metabolic and signaling genes in embryo of dry and imbibed cypselas of inbred sunflower (Helianthus annuus L., Asteraceae) lines: B123 (dormant) and B91 (non-dormant). Under our experimental conditions, the expression of RGL2 gene might be related to the ABA peak in B123 line at 3 h of imbibition. Indeed, RGL2 transcripts are absent in dry and early embedded cypselas of the non-dormant line B91. ABA increase was accompanied by a significant ABA-Glucosyl ester (ABA-GE) and phaseic acid (PA) (two ABA catabolites) decrease in B123 line (3 h) which indicates that ABA metabolism seems to be more active in this line, and that it would be involved in the imposition and maintenance of sunflower seed dormancy, as it has been reported for many species. Finally, an increase of bioactive GAs (GA1 and GA3) occurs at 12 h of imbibition in both lines after a decrease in ABA content. This study shows the first report about the RGL2 tissue-specific gene expression in sunflower inbred lines with contrasting dormancy level. Furthermore, our results provide evidence that ABA and GAs content and differential expression of metabolism and signaling genes would be interacting in seed dormancy regulation through a mechanism of action related to embryo itself.
dc.descriptionFil: Rosello, Paula Luciana. Universidad Nacional de La Pampa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.descriptionFil: Vigliocco, Ana Edit. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.descriptionFil: Andrade, Andrea Mariela. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.descriptionFil: Riera, Natalí Vanesa. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.descriptionFil: Calafat, Mario Jose. Universidad Nacional de La Pampa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.descriptionFil: Molas, María Lía. Universidad Nacional de La Pampa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.descriptionFil: Alemano, Sergio Gabriel. Universidad Nacional de Río Cuarto; Argentina
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dc.languageeng
dc.publisherElsevier France-Editions Scientifiques Medicales Elsevier
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0981942816300468
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.plaphy.2016.02.021
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectDORMANCY
dc.subjectGENE EXPRESSION
dc.subjectGERMINATION
dc.subjectHELIANTHUS ANNUUS L.
dc.subjectPHYTOHORMONES
dc.subjecthttps://purl.org/becyt/ford/1.6
dc.subjecthttps://purl.org/becyt/ford/1
dc.subjecthttps://purl.org/becyt/ford/4.1
dc.subjecthttps://purl.org/becyt/ford/4
dc.titleDifferential hormonal and gene expression dynamics in two inbred sunflower lines with contrasting dormancy level
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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