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