Characterization of Lasiodiplodia species associated with grapevines in Mexico

Botryosphaeria dieback is one of the most prevalent grapevine trunk diseases (GTDs), and caused by fungi in Botryosphaeriaceae. Fungi invade vascular systems mainly through pruning wounds, cause cankers necrotic lesions, which lead to decline death. Lasiodiplodia theobromae has been reported as a highly virulent pathogen grapevine, was previously Mexican vineyards. The taxonomy recently revised, adding new species, some were reduced synonymy. This study aimed characterize Lasio-diplodia producing symptoms Sonora Baja California, Mexico. Using phylogenetic markers tef1-? ITS regions, brasiliensis, L. crassispora, exigua, gilanensis identified. Lasidiplodia exigua species. brasiliensis very ‘Cabernet Sauvignon’ plants, while less virulent, crassispora did not produce lesions at 2 months post-inoculation. optimum temperature spp. 28°C, but all four species grew up 37°C, isolates slowly 40°C. first report vineyards