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