Genotypes and Scion/Rootstock Combinations Influence Stomatal Behavior and Aquaporin Expression in Grapevines Under Water Deficit

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dc.catalogadordfo
dc.contributor.authorGalaz, Andrea
dc.contributor.authorPérez Donoso, Alonso Gastón
dc.contributor.authorGambardella Casanova, Marina Irma
dc.date.accessioned2025-03-07T12:11:49Z
dc.date.available2025-03-07T12:11:49Z
dc.date.issued2024
dc.description.abstractThis study investigates the impact of water stress on grapevines, specifically examining the role of rootstocks and aquaporins. Two experiments on potted plants were conducted in central Chile during the summer, under conditions of high water demand, involving various rootstock genotypes and combinations of Cabernet Sauvignon (CS) grafted onto rootstocks. Significant differences were observed among plants in terms of stem water potential, stomatal conductance, and growth rate. Notably, the CS/CS combination consistently displayed the slowest growth rate, regardless of the irrigation treatment. The study also analyzed the expression levels of plasma membrane intrinsic proteins (PIPs) and tonoplast intrinsic proteins (TIPs) aquaporins in the leaves of grafted plants. Specifically, VvPIP2;2 aquaporins showed reduced expression after 14 days without irrigation, whereas VvTIP1;1 and VvTIP2;1 expression levels correlated positively with gs responses in grafted plants, suggesting their role in modulating water content in leaves under water stress. TIP aquaporins likely play a significant role in the differential responses of CS plants towards nearly isohydric or anisohydric behaviour. The CS/CS combination exhibited near isohydric behavior, correlating with lower TIP aquaporin expression, while the combination of CS onto 1103P and 101-14 showed higher expression, indicating anisohydric behavior. The findings suggest that grafted plants are more resilient to water stress, supporting the idea that rootstocks can mitigate the effects of water stress on the scion.
dc.fechaingreso.objetodigital2025-03-07
dc.format.extent16 páginas
dc.fuente.origenWOS
dc.identifier.doi10.20944/preprints202410.2291.v1
dc.identifier.urihttps://doi.org/10.20944/preprints202410.2291.v1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/102420
dc.identifier.wosidPPRN:119047434
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Perez Donoso Alonso Gaston; S/I; 91787
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Gambardella Casanova Marina Irma; 0000-0001-7778-8797; 1006595
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectWater stress
dc.subjectDrought resistance
dc.subjectAnisohydric beahavior
dc.subjectStomatal conductance
dc.subjectVitis 26 aquaporins
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods09 Industry, innovation and infrastructure
dc.subject.odspa09 Industria, innovación e infraestructura
dc.titleGenotypes and Scion/Rootstock Combinations Influence Stomatal Behavior and Aquaporin Expression in Grapevines Under Water Deficit
dc.typepreprint
sipa.codpersvinculados91787
sipa.codpersvinculados1006595
sipa.trazabilidadWOS;2024-12-14
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