First report of stolbur phytoplasma causing bois noir on grapevine in Bulgaria
A monitoring programme for quarantine pests of grapevine was carried out in Bulgaria from 2003 to 2005. Typical symptoms of grapevine yellows were observed on samples of Vitis vinifera cv. Merlot in the region of Sliven. Molecular tests (PCR) confirmed the presence of stolbur phytoplasma. During this survey, grapevine flavescence dorée (EPPO A2 list) and its vector Scaphoideus titanus were not detected. This is the first time that stolbur phytoplasma causing bois noir on grapevine is reported from Bulgaria.
Sources
NPPO of Bulgaria, 2006-09.