Pierce’s Ailment (PD) of grapevine (Vitis vinifera) is attributable to the bacterium Xylella fastidiosa and it is vectored by xylem sap-sucking insects, whereas Grapevine Crimson Blotch Virus (GRBV) leads to Purple Blotch Illness and it is transmitted during the laboratory by alfalfa leafhopper Spissistilus festinus. The importance of anthocyanin accumulations https://lyricsdemon.com/