Pierce’s disease (PD) of grapevine (Vitis vinifera) is because of the bacterium Xylella fastidiosa and it is vectored by xylem sap-sucking insects, Whilst Grapevine Purple Blotch Virus (GRBV) brings about Crimson Blotch Sickness and is transmitted while in the laboratory by alfalfa leafhopper Spissistilus festinus. The importance of anthocyanin accumulations https://w16050.corpfinwiki.com/8615038/facts_about_login_tas4d_revealed