Pierce’s Ailment (PD) of grapevine (Vitis vinifera) is due to the bacterium Xylella fastidiosa and is vectored by xylem sap-sucking insects, Whilst Grapevine Purple Blotch Virus (GRBV) results in Purple Blotch Illness and is also transmitted within the laboratory by alfalfa leafhopper Spissistilus festinus. The significance of anthocyanin accumulations in https://lyricsdemon.com/