DOI: 10.1007/s10533-013-9912-7
Scopus记录号: 2-s2.0-84896394358
论文题名: The roles of microorganisms in litter decomposition and soil formation
作者: Hobara S. ; Osono T. ; Hirose D. ; Noro K. ; Hirota M. ; Benner R.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 118, 期: 2018-01-03 起始页码: 471
结束页码: 486
语种: 英语
英文关键词: Amino acids
; Amino sugars
; Bacteria
; Carbon and nitrogen dynamics
; Fungi
; Litter decomposition
Scopus关键词: amino acid
; bacterium
; biochemical composition
; decomposition
; fungus
; immobilization
; litter
; polymer
; soil chemistry
; soil microorganism
; soil organic matter
; soil stabilization
; sugar
; Bacteria (microorganisms)
; Fungi
英文摘要: Much has been learned about the microbial decomposition of plant litter, but relatively little is known about microbial contributions to litter and soil chemistry. We conducted a 3-year litterbag experiment and measured hydrolyzable amino acids (AA) and amino sugars (AS) to gain insights about microbial contributions to the chemical characteristics of decomposing litter and soil. Microscopic observations of hyphae were used to estimate fungal contributions to litter. The carbon (C)-normalized yields of AA and AS increased during decomposition along with nitrogen (N), indicating a shift in chemical characteristics from C-rich plant-derived biopolymers to N-rich, microbially-derived biochemicals. The contributions of fungal biomass to C and N were minor, but necromass of fungi as melanized and clamp-bearing hyphae increased during litter decomposition. Yields of glucosamine and galactosamine in litter approached those in microorganisms, particularly bacteria, suggesting major contributions of bacterial residues to litter during decomposition. The microbial contributions to decomposing litter were consistent with those observed in organic and mineral soils. Microorganisms play important roles in the organization and stabilization of soil organic matter as well as N immobilization and organic C preservation. © 2013 Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83669
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Environmental and Symbiotic Science, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, 069-8501, Japan; Department of Biological Sciences, University of South Carolina, Columbia, SC, 29208, United States; Center for Ecological Research, Kyoto University, Otsu, 520-2113, Japan; College of Pharmacy, Nihon University, Funabashi, Chiba, 274-8555, Japan; Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan
Recommended Citation:
Hobara S.,Osono T.,Hirose D.,et al. The roles of microorganisms in litter decomposition and soil formation[J]. Biogeochemistry,2014-01-01,118(2018-01-03)