From the Australian Broadcasting Corporation:

After ten years of laboratory trials, an Adelaide plant scientist has developed genetically modified grape vines that are resistant to mildew.

Downy and powdery mildew plagued vineyards across southern Australia last vintage due to the wet warm summer, with many grapes left to rot on the vine.

CSIRO research scientist Ian Dry says the vines haven't been tested in the field, as the industry isn't keen on GM technology.

"What we done is identify two genes from the North American grape vine which confer resistance from these two mildew pathogens," he said.

For more, see: Australian scientist develops GM grape vines