13 documents found, page 1 of 2

Chitosan Application in Vineyards (Vitis vinifera L. cv. Tinto Cão) Induces Acc...

Despite the numerous beneficial properties and uses of chitosan in agriculture, the molecular mechanisms behind its elicitation potential are still unclear. This study aimed at understanding the e ect of chitosan application in the levels of phenolic compounds of Vitis vinifera L. red grapes berry skin (cv. Tinto Cão) during veraison. Grapevines were treated with chitosan (0.01% in 0.01% acetic acid) while cont...

Uncovering Northeast Portugal grapevine's varietal legacy

Northeast Portugal comprises the wine denominations "Douro" and "Trás-os-Montes". There are more than one hundred grapevine cultivars registered suitable for wine production in these regions ministerial-orders number 1204/2006 and 383/2017), however only a few are actually used for winemaking. In this sense, the identification of the varieties cultivated in past times may widen the number of varieties and can b...

Chitosan upregulates the genes of the ROS pathway and enhances the antioxidant ...

Chitosan is an environmentally-friendly active molecule that has been explored for numerous agricultural uses. Its use in crop protection is well-known, however, other properties, such as bioactivity, deserve attention. Moreover, the modes of actions of chitosan remain to be elucidated. The present study assessed the levels of total phenolic compounds, the antioxidant potential, and the expression of reactive o...

Spontaneous variation regarding grape berry skin color: A comprehensive study o...

Understanding grape berry development and the metabolism of different classes of compounds responsible for traits like berry's color is imperative to control and improve quality aspects of grapes. A colorimetric, biochemical and molecular characterization allowed the comprehensive description of the pigment-related characteristics of nine berry skin color somatic variants, belonging to four different varieties....

Characterisation of related red-berried and white-berried grapevine cultivars

Eight presumably related dark red-berried (dR), light red-berried (lR) and white-berried (W) grapevine cultivars grown under similar environmental conditions were characterised on the basis of morphologic (phenotype) and molecular (genotype) parameters. The ampelographic characterisation was based on the main descriptors that correspond to the 'Primary descriptor priority list' suggested by the International Or...

Identification of Vitis vinifera L. grape berry skin color mutants and polyphen...

Identification of Vitis vinifera L. grape berry skin color mutants and polyphen...

A germplasm set of twenty-five grapevine accessions, forming eleven groups of possible berry skin color mutants, were genotyped with twelve microsatellite loci, being eleven of them identified as true color mutants. The polyphenolic profiling of the confirmed mutant cultivars revealed a total of twenty-four polyphenols, comprising non-colored compounds (phenolic acids, flavan-3-ols, flavonols and a stilbene) an...

The utilization of long-chain fatty acids as markers for diet composition estim...

Optimization of honey-must preparation and alcoholic fermentation by Saccharomy...

Evaluation of very long-chain fatty acids and n-alkane epicuticular compounds a...