Pierce’s Condition (PD) of grapevine (Vitis vinifera) is due to the bacterium Xylella fastidiosa and it is vectored by xylem sap-sucking insects, Whilst Grapevine Red Blotch Virus (GRBV) brings about Pink Blotch Ailment which is transmitted in the laboratory by alfalfa leafhopper Spissistilus festinus. The importance of anthocyanin accumulations in https://lyricsdemon.com/