Such examples exist for most crops. When phylloxera Daktulosphaira vitifoliae, a root-feeding insect, invaded Europe and destroyed nearly all the vineyards from England to Albania, the solution came in the form of wild American grapevines. Nearly all wine in the world is now produced from grapes grown on the stems of domesticated grapevines grafted onto the roots of wild grapes. When corn was threatened by corn blight, resistance genes from one of corn's wild Mexican relatives, Tripsacum dactyloides, were bred into domesticated corn. In the last few decades, the genes of crop wild relatives have been crossed into bananas, barley, beans, cassava, chickpeas, corn, lettuce, oats, potatoes, wheat, sunflowers, tomatoes, and at least seventeen other crop species.