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