Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 3, Pages 1021-1027Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.08.109
Keywords
Fungi; Yeast; Clone library; DGGE; Decomposition
Funding
- Mellon Foundation
- NSF [0084207]
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [0084207] Funding Source: National Science Foundation
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Fungi are important in terrestrial decay processes. However, fungi associated with organic decay during composting are still not well known. In this study culture-independent methods were used to identify fungi associated with composting organic municipal wastes to gain a better understanding of the diversity of fungi associated with this process. Fungal communities from 0, 210, and 410 day-old compost samples were assessed with DNA fingerprinting using denaturing gradient gel electrophoresis (DGGE) and by the analysis of DNA sequences from rDNA clone libraries. From 207 rDNA sequences, 82 fungal OTU's were detected. A disproportionate number of yeast sequences were detected in Day 0 clone libraries, including the human pathogens Candida tropicalis and Candida krusei (Saccharomycetales). Basidiomycetes accounted for over half of the clones from the Day 210 sample. Clones of Cercophora and Neurospora species accounted for most of the fungal clones of the Day 410 sample. No Zygomycetes or Aspergillus species were detected in this study. These findings call for a reassessment of long held views about the organisms involved in the composting of organic municipal wastes. (C) 2009 Elsevier Ltd. All rights reserved.
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