Pierce’s Disorder (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) will cause Crimson Blotch Sickness which is transmitted from the laboratory by alfalfa leafhopper Spissistilus festinus. The significance of anthocyanin accumulations in https://lyricsdemon.com/