Phytophthora ipomoeae sp . nov . , a new homothallic species causing leaf blight on Ipomoea longipedunculata in the Toluca Valley of central Mexico

The central highlands of Mexico, which include the Toluca Valley, are thought to be the centre of origin and diversity of both Phytophthora infestans, causal organism of potato late blight (Niederhauser 1991, Goodwin et al. 1992) found on wild and cultivated Solanum species, and the closely related P. mirabilis. P. mirabilis causes leaf blight on Mirabilis… (More)