Quantitative detection of the agar-cultivated and rhizotron-grown ectomycorrhizal fungus Piloderma croceum Erikss. &. Hjortst. by ITS1-based flourescent polymerase chain reaction in comparison with direct microscopy. - Schubert,R..; Raidl,S..; Funk,R..; Bahnweg,G..; Müller-Stark,G..; Agerer,R.. (Mycorrhiza, 2003)