Besieged by the tiny phylloxera insect that threatens to destroy the nation's premiere wine grape vineyards of the Napa and Sonoma valleys, the California wine industry has launched a defensive. It's throwing a party. "Rootstock" -- a festival reminiscent of the 1960s Woodstock -- will be held Sunday, Aug. 2, at The Grove of the Silverado Country Club in Napa. Conjured up and coordinated by Michael Martini, winemaker for Louis Martini Winery and a graduate of the UC Davis viticulture and enology department, Rootstock is the wine community's volunteer effort to support phylloxera research at UC Davis, where plant and insect experts have joined forces to develop a wine-grape rootstock resistant to the new strain of phylloxera that reared its head in California about seven years ago. Approximately 1,000 food-, music- and wine-lovers are expected to gather for the event, featuring wines personally poured by 40 vintners, foods prepared by top Northern California chefs and music provided by Bay Area rock, Cajun and jazz bands. The festival underscores the continuing reliance of industry upon private and public universities for research expertise and the universities' need for such industry support in an era of shrinking state and federal budgets. Rootstock also highlights a new generation of wine consumers -- the maturing rock 'n' roll crowd.