Grapevine leafroll is one of the most widespread virus diseases of grapevine and Grapevine leafrollassociated virus 3 (GLRaV-3) is one of its major causal agents. The effect of GLRaV-3 elimination was studied under vineyard conditions for two years by comparing the virus-free and infected lines of the same clone of Vitis vinifera cv. Dolcetto, an important red wine cultivar grown in northwestern Italy. The results confirmed the advantages of using virus-free vines in terms of field performance (vigor, yield, leaf photosynthesis, and juice soluble solids), whereas the advantages in wine quality were less evident. Sensory analysis clarified that the wine from virus-free vines was slightly different from that of vines infected by GLRaV-3, but did not indicate a significant preference for one or the other.
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