New Zealand is the third largest producer of kiwifruit in the world. But in November 2010, that looked to change when kiwifruit vines across the country became ravaged by the bacterial disease PSA. It spread like wildfire and wiped out the Zespri Gold breed at the time. Sonia Yee speaks to award-winning researcher, Professor Russell Lowe and New Zealand's leading organic kiwifruit breeder, Jeff Roderick, to find out how PSA affected the wider industry and what it took to fight a disease that was destroying one of New Zealand's most precious export products.