Phylogenetic Study of Alternaria Potato and Tomato Pathogens in Russia

Early blight (EB) is a destructive disease affecting potato and tomato plants in Russia, caused by heterogeneous group of plant pathogenic Alternaria fungi. The current species delimitation sect. Porri with medium to large conidia long (filamentous) beak based on molecular data. In this study, the ITS, GAPDH, RPB2, TEF1, Alt 1 gene regions were analyzed 41 large-spored isolates obtained from diseased collected 13 Russia. Our data revealed five (A. alternariacida, A. grandis, linariae, protenta, solani). Two solani linariae) found be associated early tomato. linariae protenta confirmed as major causal agents blight, respectively. There no phylogenetic groupings among tested Russian their locality.