First report of Beet pseudo-yellows virus in lettuce in Greece.
Lactuca sativa (lettuce) is an important leafy crop in the Mediterranean countries and worldwide. In November 2020, interveinal yellowing symptoms and slight leaf curling, which resembled infection by criniviruses or poleroviruses, appeared in a field-grown lettuce crop in Vassilika (Northern Greece) one of the most important vegetable producing areas in Thessaloniki region. The affected plants comprised approximately 30% of the whole crop. The causal pathogen was isolated and identified as Beet pseudo-yellows virus (BPYV) based on various molecular analyses. This is thought to be the first report of the virus in lettuce.