First report of Grapevine pinot gris virus in Germany
Grapevine Pinot gris virus (Trichovirus, GPGV) is a newly described virus which was originally identified in a grapevine plant (Vitis vinifera ‘Pinot gris’) showing symptoms of chlorotic mottling and leaf deformations in the Autonomous Province of Trento, in Italy. The virus was then detected in other parts of the world including Asia, North America and several European countries. However, the pathogenicity of GPGV remains to be clarified, as it is not consistently associated with symptomatic plants.
In Germany, during a field survey conducted in 2015 in Baden-Württemberg, grapevine plants (Vitis vinifera ‘Riesling’) showing short internodes, deformed shoots (zigzag shoot growth), abnormal berry development were observed in a commercial vineyard. Samples from 30 plants were tested (PCR, sequencing) and results confirmed the presence of GPGV. In addition to GPGV, NGS analysis revealed the presence of 3 other pathogens: Grapevine rupestris stem pitting-associated virus, Hop stunt viroid and Grapevine yellow speckle viroid I. This is the first time that Grapevine pinot gris virus is reported from Germany
Sources
Reynard JS, Schumacher S, Menzel W, Fuchs J, Bohnert P, Glasa M, Wetzel T, Fuchs R (2016) First report of Grapevine Pinot gris virus in German vineyards. Plant Disease 100(12), p 2545.