COLLETOTRICHUM COCCODES IN POTATO AND TOMATO LEAVES IN RUSSIA
BELOV GRIGORIY L.1,B ELOSOKHOV ARSENIY F.2, KUTUZOVA IRINA A.2, STATSYUK
NATALIA V.3, CHUDINOVA ELENA M.4,5,A LEXANDROVA ALINA V.2,K OKAEVA LYUDMILA
Y.1,2,E LANSKY SERGEY N.2,4
1 State scientifc institution All-Russian Research nnstitute of Potato Farming name after A.G.
Lorkh , 140051, Moscow region, Lyubertsy district, Kraskovo - 1, Lorkh str., 23
2 Lomonosov Moscow State University, Biological Faculty, 1, Leninskie Gory, 119991
3 All-Russian Research nnstitute of Ph ytopath ology, 5, nnstitute street, Bolsh ie Vyazemy,
Odintsovo district, Moscow region, 143050, Russia
4 Peoples Friendsh ip University of Russia, 6, Miklukh o-Maklaya street, Moscow, 117198
5 nnstitute of Protein Reseach of th e Russian Academy of Sciences, 4, nnstitutskaya street,
Pushchino, Moscow Region, 142290
Colletotrichum coccodes is a plant pathogenic fungus afecting diferent organs of potato, tomato, and some other plants. The leaf infection with C. coccodes may result in a rapid development of infection nidus and high losses caused by th e infection of tomato fruits and potato tubers during h arvesting. Our study showed th e presence of C. coccodes on tomato and potato leaves with dry necrotic lesions. The presence of a DNA region specifc for C. coccodes was detected in DNA samples isolated from infected tomato leaves collected in th e Rostov region (7 and 1 samples from two distinct feldss and the Krasnodar Territory (5 samples from one felds. nn th e case of potato leaf samples, th e frequency of C. coccodes detection was lower th an in tomato leaves. Th is fungus was revealed only in fve potato leaf samples: one from th e North ern Ossetia, one from the Kostroma region, and th ree from the Mariy El Republic. Pure cultures of two isolates were isolated from a naturally infected potato leaf. According to morph ological criteria, size of spores and sclerotia, h abitus of colonies, and species-specifc DNA sequences, both strains completely corresponded to C. coccodes.
JOURNAL OF PLANT DISEASES AND PROTECTION
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