气候变化领域集成服务门户(CCPortal): A trait-based understanding of wood decomposition by fungi

CCPortal

DOI	10.1073/pnas.1909166117
	A trait-based understanding of wood decomposition by fungi
	Lustenhouwer N.; Maynard D.S.; Bradford M.A.; Lindner D.L.; Oberle B.; Zanne A.E.; Crowther T.W.
发表日期	2020
ISSN	0027-8424
卷号	117 期号:21
英文摘要	As the primary decomposers of organic material in terrestrial ecosystems, fungi are critical agents of the global carbon cycle. Yet our ability to link fungal community composition to ecosystem functioning is constrained by a limited understanding of the factors accounting for different wood decomposition rates among fungi. Here we examine which traits best explain fungal decomposition ability by combining detailed trait-based assays on 34 saprotrophic fungi from across North America in the laboratory with a 5-y field study comprising 1,582 fungi isolated from 74 decomposing logs. Fungal growth rate (hyphal extension rate) was the strongest single predictor of fungal-mediated wood decomposition rate under laboratory conditions, and accounted for up to 27% of the in situ variation in decomposition in the field. At the individual level, decomposition rate was negatively correlated with moisture niche width (an indicator of drought stress tolerance) and with the production of nutrient-mineralizing extracellular enzymes. Together, these results suggest that decomposition rates strongly align with a dominance-tolerance life-history tradeoff that was previously identified in these isolates, forming a spectrum from slow-growing, stress-tolerant fungi that are poor decomposers to fast-growing, highly competitive fungi with fast decomposition rates. Our study illustrates how an understanding of fungal trait variation could improve our predictive ability of the early and midstages of wood decay, to which our findings are most applicable. By mapping our results onto the biogeographic distribution of the dominance-tolerance trade-off across North America, we approximate broad-scale patterns in intrinsic fungal-mediatedwood decomposition rates. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Carbon cycle; Decay rate; Functional biogeography; Fungal traits; Wood decomposition
语种	英语
scopus关键词	article; biogeography; carbon cycle; decomposer; decomposition; drought stress; field study; fungus growth; life history; moisture; nonhuman; North America; nutrient; saprotroph; carbon cycle; classification; ecosystem; enzymology; fungus; fungus hyphae; microbiology; mycobiome; physiology; wood; Carbon Cycle; Ecosystem; Fungi; Hyphae; Mycobiome; North America; Wood
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160948
作者单位	Lustenhouwer, N., Institute of Integrative Biology, ETH Zurich, Zurich, 8092, Switzerland, Department of Ecology and Evolution, University of California, Santa Cruz, CA 95060, United States; Maynard, D.S., Institute of Integrative Biology, ETH Zurich, Zurich, 8092, Switzerland, Department of Ecology and Evolution, University of Chicago, Chicago, IL 60637, United States; Bradford, M.A., School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, United States; Lindner, D.L., Northern Research Station, US Forest Service, Madison, WI 53726, United States; Oberle, B., Division of Natural Sciences, New College of Florida, Sarasota, FL 34243, United States; Zanne, A.E., Department of Biological Sciences, George Washington University, Washington, DC 20052, United States; Crowther, T.W., Institute of Integrative Biology, ETH Zurich, Zurich, 8092, Switzerland
推荐引用方式 GB/T 7714	Lustenhouwer N.,Maynard D.S.,Bradford M.A.,et al. A trait-based understanding of wood decomposition by fungi[J],2020,117(21).
APA	Lustenhouwer N..,Maynard D.S..,Bradford M.A..,Lindner D.L..,Oberle B..,...&Crowther T.W..(2020).A trait-based understanding of wood decomposition by fungi.Proceedings of the National Academy of Sciences of the United States of America,117(21).
MLA	Lustenhouwer N.,et al."A trait-based understanding of wood decomposition by fungi".Proceedings of the National Academy of Sciences of the United States of America 117.21(2020).