Giesco
THE INTERACTION BETWEEN BIOTIC (VIRUS) AND ABIOTIC (DROUGHT) STRESSES IN GRAPEVINE INTERACCIÓN ENTRE ESTRÉS BIÓTICO (VIRUS) Y ABIÓTICO (SEQUÍA) EN VIÑA
EL AOU-OUAD, Hanan1; POU, Alicia1; MONTERO, Rafael1; MEDRANO, Hipólito1; TOMÁS, Magdalena1; FLOREZ-SARASA, Igor2; RIBAS-CARBO, Miquel1; CIFRE, Josep1; BOTA, Josefina1* 1 Grup de Recerca en Biologia de les Plantes en Condicions Mediterranies, Departament de Biologia, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Spain 2 Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany *Corresponding author: j.bota@uib.es
Abstract: Water limitation is one of the major threats affecting grapevine production. At the same time, grapevines are highly subjected to different viruses from which Grapevine leafroll associated virus-3 (GLRaV-3) is one of the most widespread ones. The effects of virus infection, moderate water stress and its combination on main physiological processes were studied in two local grapevine cultivars, Malvasia de Banyalbufar and Giró Ros during three consecutive years. Potted Grapevines infected with leafroll associated virus-3 (GLRaV-3) and non-infected plants were subjected to two water regimes, wellwatered and moderate water stress. Remarkably, the results of this work indicate that the combined stress resulted in a detrimental effect on plant growth and physiology; but any additive effect between water stress and virus infection has been highlighted. Moreover, the combination of stresses triggers a specific response at the metabolic level (which was?), which was not quantitatively predicted by the sum of each individual stress. Thus, these physiological and metabolic patterns (some details, too general) should be taken into account in future works to better understand the grapevine-virusinteraction within climate change scenarios.
Keywords: Combined stress, Grapevine leaf-roll-associated virus-3 (GLRaV-3), water stress, Vitis vinifera L.
Abstract: Water limitation is one of the major threats affecting grapevine production. At the same time, grapevines are highly subjected to different viruses from which Grapevine leafroll associated virus-3 (GLRaV-3) is one of the most widespread ones. The effects of virus infection, moderate water stress and its combination on main physiological processes were studied in two local grapevine cultivars, Malvasia de Banyalbufar and Giró Ros during three consecutive years. Potted Grapevines infected with leafroll associated virus-3 (GLRaV-3) and non-infected plants were subjected to two water regimes, wellwatered and moderate water stress. Remarkably, the results of this work indicate that the combined stress resulted in a detrimental effect on plant growth and physiology; but any additive effect between water stress and virus infection has been highlighted. Moreover, the combination of stresses triggers a specific response at the metabolic level (which was?), which was not quantitatively predicted by the sum of each individual stress. Thus, these physiological and metabolic patterns (some details, too general) should be taken into account in future works to better understand the grapevine-virusinteraction within climate change scenarios.
Keywords: Combined stress, Grapevine leaf-roll-associated virus-3 (GLRaV-3), water stress, Vitis vinifera L.