The postfire discomycete Geopyxis carbonaria (Ascomycota) is a biotrophic root associate with Norway spruce (Picea abies) in nature.
作者： T. VRÅLSTAD , A. HOLST‐JENSEN , T. SCHUMACHER
DOI: 10.1046/J.1365-294X.1998.00365.X
关键词:
摘要: The hypothesis that the postfire discomycete Geopyxis carbonaria (Ascomycota, Pezizales, Pyronemataceae) has a biotrophic association with roots of Norway spruce (Picea abies) in nature was tested by isolation fungal strains from fresh, brown, smooth mycorrhiza-like root tips collected below depth detrimental heat penetration site. morphology seven culture isolates originating two different trees congruent axenic obtained ascospores G. carbonaria. DNA sequences nuclear ribosomal internal transcribed spacers ITS1 and ITS2 these root-derived cultures ascosporic were found to be identical, further supporting conclusion conspecific. extensive ascocarp ascospore formation which succeeds forest fire may explained terms escape moribund tree associate. Possible ecological adaptations pre- community are discussed.
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