The study of new fungus species causing apple sooty blotch
Department of Plant Protection
Faculty of Horticulture, Agricultural University in Kraków
29 Listopada 54, 31-425 Kraków, Poland
In southern Poland sooty blotch symptoms are caused by 8 fungus species and 3
fungus forms. In addition to Tripospermum myrti (Lind.) Hughes, Phialophora
sessilis de Hoog and Peltaster fructicola (John.) Sutton et Hodges described
previously, the occurrence of 5 new fungus species and 3 fungus forms was found.
They are the cause of the occurence various sooty colored spots on the surface of
apple fruit. The newly recognized species comprise the two belonging to
Tripospermum (T. camelopardus (Ing.) Dann et Mc Dougall, T. acerinum Syd.).
The next group includes 3 fungi recognized as sooty molds, among them the most
common Aureobasidium pullulans (de Bary) Arnoud and Cladosporium
cladosporioides (Fres.) de Vries and the rare Torula herbarum (Pers.) Link. These
fungi grow on fruits in orchards where no honeydew insects are present. Very
interesting and lesser-known groups were fungus isolates from genera Septoria,
Ramularia and Pseudocercosporella. P. sessilis occurred rarely and P. fructicola
Grabowski M., 2007. The study of new fungus species causing apple sooty blotch. Folia Horticulturae 19/2: 89-97.