In 2007, the incidence of ash dieback became widespread throughout Slovenia. The fungus Chalara fraxinea has previously been recorded in other parts of Europe. The fungus was frequently isolated from the leading edge of discoloured wood and necrotic leaf petioles. The pathogenicity of C. fraxinea was proved. Little is known about C. fraxinea biology as the pathogen has only recently been described affecting ash trees in Europe. However, its aggressiveness and rapid spread in Slovenia support the hypothesis of an introduced pathogen that is becoming widespread across parts of Europe.
COBISS.SI-ID: 2352806
The current paper is first report of powdery mildew Erysiphe arcuata on Carpinus betulus in Slovenia. It was found in arboretum Volčji Potok in 2007, afterwards also at numerous other locations througout Slovenia. New locations of three powdery mildews, which were introduced into Slovenia previously and are now widely distributed, are reported: Erysiphe azaleae, Erysiphe flexuosa and Erysiphe elevata. The characteristics of all four powdery mildews using Slovene material is described and their diagnostic features are presented by photographs.
COBISS.SI-ID: 2325158