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