grapevine stripe diseas eesca appear as dark red or yellow stripes on leaves

affected agriculture agronomy bacteria botany branch bunch cell cells chlorosis closeup color colorful conditions contagious countryside damage disease dying esca farm farming field flora fungicide fungus garden gardening glsd grapes grapevine green growing growth harvest industry infection injuring injury insecticides killing leaf leaves lush margin microscopic organic pathogen pathogens petri phloem phytoplasmas plant plantation purple quality reddish rural spots spread spring stripe structure summer surrounded symptoms tissue typically vegetable vine vineyard vineyards viruses viticulture wine winery yellow