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