Bulletin of Insectology (2011) 64, S223-S224

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Helga Reisenzein and Robert Steffek (2011)
First outbreaks of grapevine 'flavescence dorée' in Austrian viticulture
Bulletin of Insectology 64 (Suppl.), S223-S224
Second International Phytoplasmologist Working Group Meeting (IPWG), Neustadt an der Weinstraße (Germany) September 12-15, 2011
Abstract: A long-term survey on the presence of phytoplasmas in Austrian viticulture was conducted from 2004 to 2010. 'Boir noir' was widespread in all Austrian vine growing areas, no other phytoplasmas could be identified until 2009. The first finding of grapevine 'flavescence dorée' (FD) was in Southeast Styria in 2009. FD was identified in Vitis vinifera (cv. "Müller Thurgau" and "Sämling 88"), in an American hybrid (cv. Isabella) and phytoplasmas of the same subgroup were also detected in Clematis vitalba. This first disease outbreak affected four different vineyards. Incidence of few newly-affected grapevines and clematis plants were observed within the infected area, however about 0.5 ha vine growing area has been uprooted until 2010. A second outbreak of FD was detected in the region of South Styria. It was an isolate disease outbreak on two single grapevines (cv. Sämling 88) and FD-related phytoplasmas were also detected in three plants of C. vitalba. The ribosomal group affiliation of all characterized samples from both regions indicated that the phytoplasmas belonged to the ribosomal subgroup 16SrV-C. To prevent further spreading of this quarantine pathogen focus zones and a buffer zones were designated in Southeast Styria and in South Styria.
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Database assignments for author(s): Helga Reisenzein

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

16SrXII phytoplasma group Grapevine (Vitis) Austria
16SrV phytoplasma group Grapevine (Vitis) Austria