Erysiphe flexuosa - the new pathogen of Aesculus hippocastanum in Lithuania

Abstract

Introduction of plant speciesr esults in migration of pathogenicm icroorganisms, which in big part manage to adapt to environmental conditions in new regionsa nd spreadq uickly.T he spreado fnew pathogens peciesc anb e prompt and threat local flora, so that they may be consideredin vasives peciesF. or a long time invasivef ungi haven ot beenc onsideredd angerouso rganisms( Palm2 001,R ossman 2001) and their spreada nd threat to new ecosystemhs aven ot beens tudied. Yet, the epidemic spread of Ophiostoman ovo-ulmi,G ymnosporangiusmab inqeo r Monilial axq were described in many countries (Raudonise t al. 2008). In recent yearst he interest in invasives peciesi,n cluding fungi, is growing (Carlton 1999, Biological..2. OO4). Erysiphaleasr e obligatory parasitesc ausingp owdery mildew on plants from 16 9 families( Hirata1 986). Somes pecies of Erysiphaleasre k nown to causee pidemics on cultivatedp lants:g rapep owderym ildew, spreadi n Europei n 19th century and American gooseberrym ildew, spreadi n Europe and Asia in 20th century (Weltzien 1978).Their causinga gents,E rysiphnee catoar ndP odosphaemrao rs-uvae (synonimo f Sphaerothecamors-uvreasep),e ctivelyh, avef eaturest ypicalo finvasive species.[...]