| breakdown of host resistance by independent evolutionary lineages of beet necrotic yellow vein virus involves a parallel c/u mutation in its p25 gene. | abstract breakdown of sugar beet rz1-mediated resistance against beet necrotic yellow vein virus (bnyvv) infection was previously found, by reverse genetics, to be caused by a single mutation in its p25 gene. the possibility of alternative breaking mutations, however, has not been discarded. to explore the natural diversity of bnyvv in the field and its effects on overcoming rz1, wild-type (wt) and resistance-breaking (rb) p25 genes from diverse production regions of north america were character ... | 2010 | 20055646 |