期刊
FUNGAL ECOLOGY
卷 4, 期 6, 页码 417-426出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.funeco.2011.03.005
关键词
Decomposition; Extracellular enzymes; Fungal biomass; Hypholoma fasciculare; Lignin; Litter; Mineralization; Saprotrophic basidiomycete
资金
- Ministry of Education, Youth and Sports of the Czech Republic [LC06066, ME10028, LA10001]
- Institute of Microbiology of the ASCR, v.v.i. [AV0Z50200510]
Chemical composition of litter has previously been reported to affect in situ decomposition. To identify its effects on a single species level, the saprotrophic basidiomycete Hypholoma fasciculare was grown on 11 types of litter with variable chemical composition (N content of 3.4-28.9 mg g (1)), and the mass loss of litter and lignin, production of extracellular enzymes and fungal biomass were followed. After 12 weeks, mass loss ranged from 16% to 34%. During early decomposition stages, litter mass loss, fungal biomass production (estimated by ergosterol content) as well as fungal substrate use efficiency all increased with increasing initial N content of the litter. The initial litter decomposition rate was significantly positively correlated with the activities of arylsulfatase, cellobiohydrolase, endoxylanase and phosphatase. Contrary to expectations, the lignin content did not affect litter mass loss, when covariation with N content was accounted for. The ratio of lignin loss to total mass loss depended on the litter type and did not reflect the activities of ligninolytic enzymes. (C) 2011 Elsevier Ltd and The British Mycological Society. All rights reserved.
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