3 documents found, page 1 of 1
Impact of deficit irrigation on grapevine cv. ‘Touriga Nacional’ during three s...
Cabral, Inês L.; Teixeira, J. A.; Lanoue, Arnaud; Unlubayir, Marianne; Munsch, Thibaut; Valente, Joana; Alves, Fernando; Costa, Pedro Leal daThe introduction of irrigation in vineyards of the Mediterranean basin is a matter of debate, in particular in those of the Douro Demarcated Region (DDR), due to the limited number of available studies. Here, we aimed to perform a robust analysis in three consecutive vintages (2018, 2019, and 2020) on the impact of deficit irrigation on the yield, berry quality traits, and metabolome of cv. ‘Touriga Nacional’. ...
Exogenous calcium delays grape berry maturation in the white cv. loureiro while...
Martins, Viviana; Unlubayir, Marianne; Teixeira, António; Lanoue, Arnaud; Gerós, H.Vineyard calcium (Ca) sprays have been increasingly used by grape growers to improve fruit firmness and thus maintain quality, particularly in periods of heavy rains and hail. The observation that Ca visibly modified berry size, texture, and color in the most prominent white cultivar of the DOC region Vinhos Verdes, cultivar (cv.) Loureiro, led us to hypothesize that Ca induced metabolic rearrangements that res...
Calcium and methyl jasmonate cross-talk in the secondary metabolism of grape cells
Martins, Viviana; Unlubayir, Marianne; Teixeira, António; Gerós, H.; Lanoue, ArnaudIn grape cell cultures cv. Gamay Fréaux var. Teinturier, Ca was shown to decrease cell pigmentation through the inhibition of anthocyanin biosynthesis, while stimulating stilbenoids accumulation. Because methyl jasmonate (MeJA) is a well-known inducer of secondary metabolism in grape cells, and Ca antagonizes its stimulatory effect over several enzymes of core metabolic branches, in the present study we hypothe...