Rootstocks with Broad and Durable Nematode Resistance are Nearing Release ~ Gene Expression Differences Between Vitis vinifera and the Disease-Resistant American Grapevine Vitis acestivalis ~ Resistant Grapevine Rootstocks for Control of Armillaria Root Disease ~ Grape Phylloxera Genetic and Phenotypic Variability as Related to Rootstock Nodosity Feeding~ Inception and Progression of Berry Shrivel and Bunch Stem Necrosis in the Napa and Sonoma Valleys ~