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