BNYVV-resistant sugar beet developed
Researchers from two Greek universities in Athens have succeeded in producing genetically modified tobacco (Nicotiana benthamiana) and sugar beet plants resistant to beet necrotic yellow vein virus (BNYVV), the casual agent of rhizomania disease in sugar beet. To date, there has been no means of controlling the disease other than planting conventionally bred virus-resistant varieties. Most contain a single resistance gene, Rz1 from the cultivar, Holly. The value of this resistance gene has been diminished with the emergence of BYVVV strains capable of compromising the Rz1-based resistance, as well as the spread of highly pathogenic type P-isolates.