Ascomycetes with cellulolytic, amylolytic, pectinolytic, and mannanolytic activities inhabiting dead beech (Fagus crenata) trees
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- amylosa metabolismus MeSH
- Ascomycota klasifikace izolace a purifikace metabolismus MeSH
- buk (rod) mikrobiologie MeSH
- celulosa metabolismus MeSH
- DNA fungální chemie genetika MeSH
- fungální RNA genetika MeSH
- geny rRNA MeSH
- kultivační média chemie MeSH
- mannany metabolismus MeSH
- mikrobiologie životního prostředí MeSH
- papír MeSH
- pektiny metabolismus MeSH
- ribozomální DNA chemie genetika MeSH
- RNA ribozomální genetika MeSH
- sekvenční analýza DNA MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- amylosa MeSH
- celulosa MeSH
- DNA fungální MeSH
- fungální RNA MeSH
- kultivační média MeSH
- mannany MeSH
- pektiny MeSH
- ribozomální DNA MeSH
- RNA ribozomální MeSH
- RNA, ribosomal, 26S MeSH Prohlížeč
It is generally accepted that dead tree decomposition is performed mainly by delignifying basidiomycetes. While ascomycetes have been reported to inhabit dead tree bark, their contribution to dead tree decomposition is still unclear. Here, we isolated five bark-inhabiting ascomycetes possessing cellulolytic activity from dead beech tree and assessed their polysaccharolytic activities. When cultivated in a medium containing filter paper as a sole carbon source, three strains degraded >40 % of the filter paper in a 4-week cultivation and the others degraded 15-30 % of the paper. The degraders possessed amylolytic, pectinolytic, and mannanolytic activities as well as cellulolytic activity, implying that they play an important role in dead tree decomposition after delignification by basidiomycetes. Phylogenetic analysis based on large subunit ribosomal DNA (lsu-DNA) sequences implied that the isolates belonged to Penicillium or Amorphotheca.
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