Host symptoms associated with Xylella fastidiosa infection. (A) Leaf scorching. (B) Berry desiccation or ‘raisining’ (asterisk) and green islands (white arrow) associated with Pierce's disease (PD). (C) Limb dieback and (D) foliar symptoms in olive quick decline syndrome (OQDS). (E) Foliar symptoms of almond leaf scorch. (F) Foliar symptoms of oleander leaf scorch (OLS). (G) Foliar symptoms of citrus variegated chlorosis (CVC). Photo credits: (A, B) Philippe Rolshausen, University of California, Riverside, CA, USA; (C, D, G) Rodrigo Kruegner, US Department of Agriculture Agricultural Research Service; (E) David Doll, University of California Cooperative Extension, Merced, CA, USA .