IAM Plant Biotech Unit Plant Pathology Webpages

German Version Site map FAIR 3889 Virus diseases ACLSV ApMV ASGV ASPV PPV PDV PNRSV ArMV ToRSV RpRSV SLRSV GFLV GLRaV-1 GLRaV-3 LChV CMLV CRMV CNRMV CGRMV ChTLV CVA Phytoplasma diseases Pathogen collection Pathogen detection Pathogen elimination Contact us Related Sites

Grapevine Leafroll associated Virus 1 (GLRaV-1) GLRaV-1 is one of a group of at least seven serologically distinct viruses that appear in grapevine usually as mixed infection, causing the leafroll disease, the worldwide most spread disease of Vitis. All common cultivars and rootstocks can host the virus, but the american rootstocks usually do not develop any symptoms. Most distinct symptoms can be observed on red wine cultivars. The leaf area turns reddish with a small, green line along major veins. Leaves roll characterisitically, and necrosis may appear on the upper epidermis. Ripening is delayed and carbohydrate accumulation is reduced in the grapes. White cultivars often only show slight yellowish discoloration of the leaves. GLRaV-1 is usually transmitted by grafting onto infected, but symptomless rootsrocks. To control its spread, testing of propagation material is required. Nomenclature and Host Range (VIDE database) Sequence Info (NCBI database) Isolates in the Vienna Collection Detection methods