Diversity of wood-rotting Basidiomycetes in a South African native forest

TCHOTET M.; COETZEE M.P.A.; RAJCHENBERG M.; ROUX J.

Antalya

Congreso; 14th IUFRO, Working Party 7.02.01 ?Root and Butt Rot of Forest Trees?; 2015

Süleyman Demirel University, TURKEY

Wood-rotting Basidiomycetes are causal agents of wood rot of hardwood trees in natural forests. Their diversity was assessed in a South African native forest. Samples were collected from 310 trees belonging to 12 species. Trees showed various symptoms including crown dieback, bleeding and mycelial mats under the bark. Root, butt and heart rots as well as basidiome growth were recorded. Analyses of the ITS gene region grouped the isolates into 12 basidiomycetous genera. Ganoderma was dominant (81%), followed by Inonotus and Phellinus (4% each). Other genera included Coprinellus, Cylindrobasidium, Fuscoporia, Oudemansiella, Peniophora, Pseudolagarobasidium, Punctularia, Trametes and Wrightoporia. Ganoderma was the most geographical and host distributed species, while Olea capensis subsp. macrocarpa was the most frequently infected host.