Grapevine flavescence dorée phytoplasma(PHYP64)
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Foliar symptoms on grapevine, showing yellow bands along the veins and some necrosis.Courtesy: Biologische Bundesanstalt (DE).
Leaves of grapevine cv. Bellone affected by stolbur phytoplasmas. Symptoms are indistinguishable from those of flavescence dorée. Molecular diagnosis is the only way to discriminate phytoplasmas belonging to different groups.Courtesy: Dr. Federico Bondaz, Plant Protection Unit of Val d'Aosta region (IT).
Symptoms of late infection on a grape, showing brown, shrivelled fruits.Courtesy: Biologische Bundesanstalt (DE).
Leaves of grapevine cv. Chardonnay affected by flavescence dorée showing typical yellowing of the laminar blade and rolling of margins. Leaves present a triangular shape.Courtesy: Dr. Federico Bondaz, Plant Protection Unit of Val d’Aosta region (IT).