Pierce’s Sickness (PD) of grapevine (Vitis vinifera) is due to the bacterium Xylella fastidiosa and it is vectored by xylem sap-sucking insects, While Grapevine Red Blotch Virus (GRBV) will cause Crimson Blotch Disease and it is transmitted within the laboratory by alfalfa leafhopper Spissistilus festinus. The importance of anthocyanin accumulations https://lyricsdemon.com/