Virus-associated Shiraz Disease may lead Shiraz to become an endangered variety in Australia

摘要

Shiraz (syn. Syrah] is the principal winegrape variety in Australia. In 2015, it yielded 395,154 tonnes with an increase of 9% over 2012 (ABS 2015). It has been ranked number one in cultivation and demand amongst both red and white varieties in Australia. Unfortunately, this variety is sensitive to attack by a number of viruses including Grapevine virus A [GVA) which causes Shiraz Disease (SD). Here, we report the deleterious effect of GVA on Shiraz which is a cause for concern among Shiraz growers from the Riverland to Langhorne Creek, in South Australia, and in the Yarra Valley, in Victoria. The possible routes of SD spread are also discussed.