This Supplement to volume 50 of Phytopathologia Mediterranea contains original, peer reviewed research papers, prepared from presentations at the 7th International Workshop on Grapevine Trunk Diseases (IWGTD). This Workshop was held in Santa Cruz, Chile, 17–21 January 2010, and was organized by the International Council on Grapevine Trunk Diseases (ICGTD).  Publication of this Supplement has been financially assisted by the International Society for Plant Pathology (ISPP).

This Supplementary Issue of Phytopathologia Mediterranea is dedicated to the memory of Dr Luigi Chiarappa, the founder and inspiration of the ICGTD.