Аннотация:Colletotrichum coccodes and Alternaria species are plant pathogenic fungi affecting different
organs of potato, tomato, and some other plants. Species-specific primers were applied for the
survey of C. coccodes and Alternaria sp. on affected potato leaves collected in different regions
of Russia. All studied Alternaria pathogens were present in blighted leaves alone or in the
combinations, such as A. alternata + A. solani, A. infectoria+ A. alternata, A. solani +
A. infectoria. A. alternata (sensu lato) was the most frequent species revealed in 50% of tested
potato leaves (alone or in combination with other species). A. solani and A. infectoria were
revealed in 30 and 13% of samples, respectively. The presence of a DNA region specific for C.
coccodes was detected in DNA samples isolated from potato leaves collected in the Northern
Ossetia, Kostroma region, and Mariy El Republic.
