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Resumen
Grape quality for winemaking depends on sugar accumulation and metabolism in berries. Abscisic acid (ABA) and gibberellins (GAs) have been reported to control sugar allocation in economically important crops, although the mechanisms involved are still unknown. The present study tested if ABA and gibberellin A3 (GA3) enhance carbon allocation in fruits of grapevines by modifying phloem loading, phloem area and expression of sugar transporters in leaves and [ver mas...]
dc.contributor.authorMurcia, Mauro German
dc.contributor.authorPontin, Mariela Ana
dc.contributor.authorReinoso, Herminda
dc.contributor.authorBaraldi, Rita
dc.contributor.authorBertazza, Gianpaolo
dc.contributor.authorGomez Talquenca, Gonzalo
dc.contributor.authorPiccoli, Patricia Noemí
dc.contributor.authorBottini, Ambrosio Rubén
dc.date.accessioned2017-10-04T12:09:09Z
dc.date.available2017-10-04T12:09:09Z
dc.date.issued2016
dc.identifier.issn0031-9317 (Print)
dc.identifier.issn1399-3054 (Online)
dc.identifier.otherhttps://doi.org/10.1111/ppl.12390
dc.identifier.urihttp://hdl.handle.net/20.500.12123/1397
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/ppl.12390/
dc.description.abstractGrape quality for winemaking depends on sugar accumulation and metabolism in berries. Abscisic acid (ABA) and gibberellins (GAs) have been reported to control sugar allocation in economically important crops, although the mechanisms involved are still unknown. The present study tested if ABA and gibberellin A3 (GA3) enhance carbon allocation in fruits of grapevines by modifying phloem loading, phloem area and expression of sugar transporters in leaves and berries. Pot-grown Vitis vinifera cv. Malbec plants were sprayed with ABA and GA3 solutions. The amount of soluble sugars in leaves and berries related to photosynthesis were examined at three points of berry growth: pre-veraison, full veraison and post-veraison. Starch levels and amylase activity in leaves, gene expression of sugar transporters in leaves and berries and phloem anatomy were examined at full veraison. Accumulation of glucose and fructose in berries was hastened in ABA-treated plants at the stage of full veraison, which was correlated with enhancement of Vitis vinifera HEXOSE TRANSPORTER 2 (VvHT2) and Vitis vinifera HEXOSE TRANSPORTER 6 (VvHT6) gene expression, increases of phloem area and sucrose content in leaves. On the other hand, GA3 increased the quantity of photoassimilates delivered to the stem thus increasing xylem growth. In conclusion, stimulation of sugar transport by ABA and GA3 to berries and stems, respectively, was due to build-up of non-structural carbohydrates in leaves, modifications in phloem tissue and modulation in gene expression of sugar transporters.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourcePhysiologia plantarum 156 (3) : 323–337. (March 2016)eng
dc.subjectVid
dc.subjectGrapevineseng
dc.subjectVinificación
dc.subjectWinemakingeng
dc.subjectABA
dc.subjectFloema
dc.subjectPhloemeng
dc.titleABA and GA 3 increase carbon allocation in different organs of grapevine plants by inducing accumulation of non-structural carbohydrates in leaves, enhancement of phloem area and expression of sugar transporterseng
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/acceptedVersioneng
dc.description.origenEEA Mendoza
dc.gic150649
dc.description.filFil: Murcia, Mauro Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.filFil: Pontin, Mariela Ana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.filFil: Baraldi, Rita. Consiglio Nazionale delle Ricerche. Istituto di Biometeorologia; Italia
dc.description.filFil: Bertazza, Gianpaolo. Consiglio Nazionale delle Ricerche. Istituto di Biometeorologia; Italia
dc.description.filFil: Reinoso, Herminda. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Ciencias Naturales; Argentina
dc.description.filFil: Gomez Talquenca, Gonzalo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza. Departamento de Virología; Argentina
dc.description.filFil: Bottini, Ambrosio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto de Biología Agrícola de Mendoza; Argentina
dc.description.filFil: Piccoli, Patricia Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina
dc.subtypecientifico


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