Journal
BIORESOURCE TECHNOLOGY
Volume 170, Issue -, Pages 183-195Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.07.093
Keywords
Mushroom compost; Actinobacteria; Fungi; Cellulase
Funding
- National Basic Research Program of China [2011CB707402]
- National Natural Science Foundations [30970051, 30670027]
- New Century Excellent Talents in University [NCET-10-0546]
- Shandong Provincial Funds for Distinguished Young Scientists [JQ201108]
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The development of communities of three important composting players including actinobacteria, fungi and clostridia was explored during the composting of wheat straw for mushroom production. The results revealed the presence of highly diversified actinobacteria and fungal communities during the composting process. The diversity of the fungal community, however, sharply decreased in the mature compost. Furthermore, an apparent succession of both actinobacteria and fungi with intensive changes in the composition of communities was demonstrated during composting. Notably, cellulolytic actinomycetal and fungal genera represented by Thermopolyspora, Microbispora and Humicola were highly enriched in the mature compost. Analysis of the key cellulolytic genes revealed their prevalence at different composting stages including several novel glycoside hydrolase family 48 exocellulase lineages. The community of cellulolytic microbiota also changed substantially over time. The prevalence of the diversified cellulolytic microorganisms holds the great potential of mining novel lignocellulose decomposing enzymes from this specific ecosystem. (C) 2014 Elsevier Ltd. All rights reserved.
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