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