Physiological behavior of own rooted vine plants and rootstock effect on growth and PIP and TIP aquaporin leaf expression in Vitis vinifera L. (cv. Cabernet Sauvignon)

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dc.contributor.advisorGambardella C., Marina
dc.contributor.authorGalaz Seguel, Andrea Paz
dc.contributor.otherPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
dc.date2023-05-04
dc.date.accessioned2022-11-03T15:18:48Z
dc.date.issued2022
dc.date.updated2022-11-02T21:36:07Z
dc.descriptionTesis (Doctor en Ciencias de la Agricultura)--Pontificia Universidad Católica de Chile, 2022
dc.description.abstractWater scarcity is an increasingly important problem affecting the main wine-producing areas, and therefore, it is of great interest to study the physiological and molecular mechanisms that occur during periods of drought. Based on the stomatal behavior, two different strategies for facing water stress have been described: isohydric and anisohydric. Nevertheless, this classification is still not clear, and the effect of the rootstock on the whole plant response is still unknown. In this context, two assays were carried out, in both plants were subjected to water stress periods of 7 and 14 days and to a recovery period. In the first one, four Vitis spp. own-rooted genotypes were studied, two rootstocks (1103P and SO4) and two cultivars (Cabernet Sauvignon and Carménère). Stem water potential, stomatal conductance, and growth rate were evaluated. Near anisohydric behavior was observed in all genotypes studied. The second assay consisted of three scion/rootstock combinations, Cabernet Sauvignon grafted onto itself, 1103P and 101-14. Although no differences were observed in stomatal conductance and stem water potential, near isohydric behavior was observed for the homograft, and near anisohydric behavior was found for the combinations. During the recovery period, significant differences were detected in the leaf expression levels of aquaporin genes VvPIP2;1, VvPIP2;2, VvTIP1;1 and VvTIP2;1. Cabernet Sauvignon plants grafted over 1103P and 101-14- showed higher expression levels. C. Sauvignon combined with rootstocks of different genetic backgrounds, responded better to the water suspension treatment, and its recovery was faster, demonstrating the benefits of genotype interactions in these responses.
dc.description.version2023-05-04
dc.format.extent69 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/tesisUC/AGR/65296
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AGR/65296
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/65296
dc.information.autorucFacultad de agronomía e ingeniería forestal ; Gambardella C., Marina ; 0000-0001-7778-8797 ; 1006595
dc.information.autorucFacultad de agronomía e ingeniería forestal ; Galaz Seguel, Andrea Paz ; S/I ; 149612
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.titlePhysiological behavior of own rooted vine plants and rootstock effect on growth and PIP and TIP aquaporin leaf expression in Vitis vinifera L. (cv. Cabernet Sauvignon)es_ES
dc.typetesis doctoral
sipa.codpersvinculados1006595
sipa.codpersvinculados149612
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