Phytophthora species infecting fruit trees in Slovenia | Vrste iz rodu Phytophthora na sadnem drevju v Sloveniji
2007
Munda, A., Agricultural Inst. of Slovenia, Ljubljana (Slovenia) | Zerjav, M. | Schroers, H.-J.
Species of the genus Phytophthora are important pathogens of fruit trees. The aim of the present study was to identify prevailing Phytophthora species and to study their ecology and pathogenicity. Various isolation and detection techniques were used including baiting. Isolated strains were identified based on morphological characters observed with a light microscope and by sequence analysis of the internal transcribed spacer regions of the ribosomal gene cluster. Five species were identified: P. cactorum, P. citricola, P. citrophthora, P. taxon Pgchlamydo and P. cryptogea. Phytophthora cactorum is widely distributed and well known as the causative agent of root and collar rot of many fruit plants, while the other four species have not yet been reported from Slovenia. Ecology and pathogenicity of the encountered species is presented and their possible role in decline of fruit trees is discussed.
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