Abstract
Understanding the plant response to nitrate availability is crucial for sustainable agriculture. In viticulture, there is an additional element to consider: the choice of scion–rootstock couple, which allows the management of environmental cues (including nitrate availability) and productivity. Using the two rootstocks 1103 Paulsen and Riparia Gloire de Montpellier, known to confer different vigour to grafted Cabernet Sauvignon scions, Cochetel et al. (2017) have now performed the first genome-wide transcriptome study indicating the genetic basis of the response to heterogeneous nitrate supply in this situation.