Grapevine pinot gris virus detected in SA and NSW (August 2017)
Grapevine pinot gris virus (GPGV) has been detected in South Australia and NSW. The virus has not been
detected in Tasmania to date.
This virus occurs in many wine and table grape growing
regions, including Europe (where it was first categorised in 2012), Asia and
North America, which suggests that the virus has been around, undiscovered, for
a considerable time.
Symptoms occur in spring and include leaf mottling and
deformation. Infected plants may show declined yields indicating that the virus
can be a significant plant health concern in some varieties, although some
infected plants may show no visible symptoms. The virus has alternate
hosts, such as the weed commonly known as Fat-hen, which is widely naturalised
throughout large parts of Australia, including Tasmania.
Measures have been taken at the identified sites to contain the virus, which spreads through movement and exchange of
infected propagation material, and possibly by some species of mites.
Targeted surveillance in the affected states will take place in spring
when conditions are favourable to assess the status of the virus.
Routine screening for this virus at Australian borders began
in the spring of 2015. It is possible that the virus has been present in
Australia for a while with the recent detections attributed to improvements in
testing technologies, such as deep sequencing. There is now a diagnostic
protocol for the virus.
The Australian Consultative Committee on Emergency
Plant Pests (CCEPP), which is the national technical body for coordinating
national responses to emergency plant pest incursions, has met to discuss this incident
nationally and will continue to meet as further surveillance and tracing
information becomes available.
Biosecurity Tasmania is monitoring the
situation very closely and is a participant on the national technical
Until more is known about the situation, no states,
including Tasmania, have implemented new import requirements. Virus
certification schemes are the best way to ensure propagation material is clean.
Further information on GPGV will be provided as new details are obtained, and
on completion of the targeted national surveillance program in spring
What to do if you think you have found Grapevine
pinot gris virus
More information about GPGV including symptoms, sampling, testing and actions following a positive test can be found in the GPGV fact sheet.
Biosecurity Tasmania urges all grape producers to be
vigilant for any signs of the virus and if they have any concerns they should
call the emergency plant disease hotline on 1800 084 881.