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Internal Resistance in Winter Oilseed Rape Inhibits Systemic Spread of the Vascular Pathogen Verticillium longisporum
Verticillium longisporum is a vascular fungal pathogen presently threatening oilseed rape production in Europe. Systemic spread of susceptible and resistant genotypes after dip-inoculation of the roots followed by quantitative polymerase chain reaction revealed similarities only in the initial stages of root penetration and colonization of the hypocotyl, while a substantial invasion of the shoot was only recorded in susc eptible cultivar.
First occurrence of resistance to strobilurin fungicides
in Microdochium nivale and Microdochium majus from naturally infected wheat grains
Microdochium nivale (Fr.) Samuels & Hallet and Microdochium majus (Wollenweber) belong to the Fusarium ear blight fungal complex affecting cereals. In 2007 and 2008, major Microdochium sp. infestations were observed in France, and the efficacy of strobilurins was found to be altered in some field trials.
