Pierce’s Sickness (PD) of grapevine (Vitis vinifera) is caused by the bacterium Xylella fastidiosa and is particularly vectored by xylem sap-sucking insects, whereas Grapevine Purple Blotch Virus (GRBV) results in Purple Blotch Sickness and it is transmitted while in the laboratory by alfalfa leafhopper Spissistilus festinus. The significance of anthocyanin https://lyricsdemon.com/