Pierce’s Sickness (PD) of grapevine (Vitis vinifera) is attributable to the bacterium Xylella fastidiosa which is vectored by xylem sap-sucking insects, whereas Grapevine Purple Blotch Virus (GRBV) will cause Pink Blotch Illness and is also transmitted from the laboratory by alfalfa leafhopper Spissistilus festinus. The significance of anthocyanin accumulations in https://lyricsdemon.com/