Pierce’s Illness (PD) of grapevine (Vitis vinifera) is because of the bacterium Xylella fastidiosa which is vectored by xylem sap-sucking insects, While Grapevine Purple Blotch Virus (GRBV) brings about Pink Blotch Disease and is also transmitted during the laboratory by alfalfa leafhopper Spissistilus festinus. The importance of anthocyanin accumulations in https://lyricsdemon.com/