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Many recessive resistances against potyviruses are mediated by eukaryotic translation initiation factor 4E (eIF4E). In tobacco, the va resistance gene commonly used to control Potato virus Y (PVY) corresponds to a large deletion affecting the eIF4E‐1 gene on chromosome 21. Here, we compared the resistance durability conferred by various types of mutations affecting eIF4E‐1 (deletions of various sizes,...
Potato virus Y (PVY) is one of the most damaging viruses of tobacco. In particular, aggressive necrotic strains (PVYN) lead to considerable losses in yield. The main source of resistance against PVY is linked to the va locus. However, va‐overcoming PVY isolates inducing necrotic symptoms were observed in several countries. In this context, it is important to find va‐independent protection strategies...
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