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Chitosan applications in vineyards and effects on gene expression

Rupesh Singh, Centro de Química de Vila Real, Portugal

Chitosan applications in vineyards and effects on gene expression

Chitosan is an environmentally friendly active molecule with many applications for the agricultural sector. However, its mode of action is not yet well known.

This work analysed the total concentration of phenolic compounds, the antioxidant potential and the expression of genes "scavenging" of reactive oxygen species (ROS) in grapes (skins and seeds), leaves, scrapes and shoots, after the application of chitosan in two red varieties (Touriga Franca and Tinto Cão).

The results of the analysis of leaves, scrapes and shoots revealed that chitosan not only induced the synthesis of phenolic compounds but also facilitated the transfer of polyphenols from the leaves to the grapes.

Finalist work for the ENOFORUM 2020 Award: video of Rupesh Singh's presentation on the occasion of Enoforum Web (May 5-7, 2020).

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Published on 04/08/2021
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