Giovanni Paolo Martelli, Emeritus Professor of the University "Aldo Moro" of Bari, Italy, passed away on January 8, 2020. He was a recognized authority on plant virology, and in particular on viruses and virus diseases of grapevines. More recently, he documented the causal role of the bacterium Xylella fastidiosa in olive quick decline in southern Italy. G.P. Martelli will be always remembered as a pioneer scientist, an outstanding mentor and a true gentleman.
More detailed obituary in the Journal of Plant Pathology