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