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SESSION 3: PATHOGENESIS – EPIDEMIOLOGY AND POPULATION GENETICS P62 - Biodiversity of Fusarium spp. on cereals in different regions of Russia T. Kolomiets, E. Kovalenko, M. Kiseleva, L. Pankratova, N. Zhemchuzhina All-Russian Research Institute of Phytopathology; Moscow region, Odintsovo district, str. Institute, b.5, VNIIF; Moscow Russia. E-mail: lomi1@yandex.ru Monitoring survey of species causing fusarium head blight, root rot and snow mold of cereals was carried out in 11 regions of Russia. The dominating role of Fusarium spp. was indicated. Twelve species of genus Fusarium were identified by long-time mycological tests. Widely distributed species and limited species were detected by comparative analysis of occurrence of pathogens with fusarium effects on wheat, barley and rye crops in different regions. F. nivale (Monographella nivalis), F. culmorum and F. sporotrichoides were predominated with the highest frequency through the pathogens causing fusarium head blight and snow mold on winter rye. F. culmorum, F. oxysporum were predominated through the pathogens causing root rot. F. sporotrichoides was prevailing within the complex of fungi affecting an ear of winter rye and barley. F. oxysporum was indicated with the highest frequency through the pathogens of wheat root rot. It demonstrated higher adaptability than pathogens of fusarium head blight F. graminearum (Gibberella zeae) and snow mold F. nivale (Monographella nivalis). There was distribution zonality of Fusarium spp in Russia excepting F. oxysporum. F. heterosporum (G. gordonii), F. moniliforme (G.moniliformis), F.graminearum (G.zeae) were dominated in southern regions of European Russia; F. culmorum - in northern regions; F. gibbosum - in Urals. F. heterosporum and F. culmorum were equally presented in central Russia. F. heterosporum was indicated with high frequency in Siberia. Occurrence of F. sporotrichioides was increasing in Easten Siberia. This fungus was predominated in Far East. This distribution zonality was dependent on soil and climate traits of the regions. With low frequency of occurrence in the majority of regions of Russian Federation following species have been identified: F. solani (Nectria haematococca), F. avenaceum (G. avenacea), F. sambucinum (G. pulicaris), F. semitectum (F. incarnatum), F. lateritium (G. baccata). Keywords : Fusarium, species, frequency, zonality 155
SESSION 3: PATHOGENESIS – EPIDEMIOLOGY AND POPULATION GENETICS P63 - Interspecific and intraspecific variability of Fusarium fungi T. Kolomiets, L. Pankratova, E. Kovalenko All-Russian Research Institute of Phytopathology; Moscow region, Odintsovo district, str. Institute, b.5, VNIIF; Moscow Russia E-mail: lomi1@yandex.ru Pathogen fungi of genus Fusarium causing fusarium head blight, root rot and snow mold of wheat have the high genetic variability. Samples from infected plants consist of several species and special forms which are different by morphology and cultural traits, sporulation ability, pathogenicity and phytotoxicity. There were 2-7 morphotypes of each Fusarium species identified by the long-time observation of morphology and cultural traits. The correlation between sporulation ability and morphology of Fusarium isolates was not shown. The reliable differences were shown for pathogenicity and phytotoxicity between Fusarium spp. F. sporotrichioides and F. sambucinum(Gibberella pulicaris) have the high level of pathogenicity. The maximum of phytotoxicity was demonstrated for F. graminearum (G.zea) and F.nivalis (Monographella nivalis). The moderate level of pathogenicity and phytotoxicity was demonstrated for F. oxysporum and F. culmorum. Pathogenic and toxic fungi were presented during the whole of vegetation of wheat cultivars. Fusarium fungi have the high intraspecific variability. A sample from 19 isolates of F. graminearum was composed from 10 isolates with high phytotoxicity, from 8 without any phytotoxicity, and a single with moderate phytotoxicity. A sample from 13 isolates of F. oxysporum consisted of a single isolate with moderate phytotoxicity, 6 isolates with low phytotoxicity and 6 isolates without any phytotoxicity. Isolates with high toxicity have not always high pathogenicity. There were 3 isolates of F. graminearum without any pathogenicity and 6 with moderate pathogenicity from the total sample of high toxigenic isolates. Two directly contrary isolates of F. сulmorum were selected by pathogenicity and phytotoxicity. They are pathogenic but they have low phytotoxicity up to nothing. No isolates with complex of high pathogenicity and phytotoxicity were identified through Fusarium fungi from wheat. Keywords: Fusarium, variability, pathogenicity, phytotoxicity 156
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Bordeaux EFS12 12 th European Fusar
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TABLE OF CONTENTS Welcome from the
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4 SPONSORSHIP The 12 th European Fu
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8 13:00 - 14:00 Lunch 14:00 - 15:00
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10 Session 4: Genetics of Hosts - P
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12 Thursday, May 16 th Session 6: F
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Evidence for birth-and-death evolut
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Future challenges of Fusarium and m
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P35 - Screening deoxynivalenol in o
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P76 - Fusarium verticillioides and
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P113 - Agronomic practices and risk
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ORAL PRESENTATIONS 25
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KEYNOTE LECTURE SESSION 1: FUSARIUM
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SESSION 1: FUSARIUM - GENETICS, GEN
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KEYNOTE LECTURE SESSION 2: SECONDAR
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SESSION 2: SECONDARY METABOLITES -
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SESSION 3: PATHOGENESIS - EPIDEMIOL
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KEYNOTE LECTURE 1 SESSION 4: GENETI
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SESSION 4: GENETICS OF HOSTS - PLAN
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KEYNOTE LECTURE 2 SESSION 4: GENETI
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KEYNOTE LECTURE SESSION 5: DISEASE
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SESSION 5: DISEASE CONTROL AND FORE
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SESSION 6: FUTURE CHALLENGE FOR EUR
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POSTER PRESENTATIONS 91
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de Hoog G. S., 89, 114, 236 de Kler
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Ponts N., 33, 36, 82, 94, 104, 106,
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BOKU-University of Natural Resource
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touatisihem03@yahoo.fr He Xinyao In
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steve.oliver@bioc.cam.ac. uk Ortega
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Subramaniam Gopal Agriculture and A
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