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