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Title: Fungal Communities and Functional Guilds Shift Along an Elevational Gradient in the Southern Appalachian Mountains

Journal Article · · Microbial Ecology
ORCiD logo [1];  [2];  [3];  [4];  [5]
  1. Kansas State Univ., Manhattan, KS (United States). Division of Biology; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
  2. Mississippi State Univ., Mississippi State, MS (United States). Dept. of Forest Products; Mississippi State Univ., Mississippi State, MS (United States). Dept. of Biochemistry, Molecular Biology, Entomology, and Plant Pathology
  3. US Dept. of Agriculture (USDA)., Otto, NC (United States). Forest Service, Southern Research Station, Center for Forest Watershed Research, Coweeta Hydrologic Lab.
  4. Kansas State Univ., Manhattan, KS (United States). Division of Biology
  5. Mississippi State Univ., Mississippi State, MS (United States). Dept. of Biochemistry, Molecular Biology, Entomology, and Plant Pathology

Nitrogen deposition alters forest ecosystems particularly in high elevation, montane habitats where nitrogen deposition is greatest and continues to increase. We collected soils across an elevational (788–1940 m) gradient, encompassing both abiotic (soil chemistry) and biotic (vegetation community) gradients, at eight locations in the southern Appalachian Mountains of southwestern North Carolina and eastern Tennessee. We measured soil chemistry (total N, C, extractable PO4, soil pH, cation exchange capacity [ECEC], percent base saturation [% BS]) and dissected soil fungal communities using ITS2 metabarcode Illumina MiSeq sequencing. Total soil N, C, PO4, % BS, and pH increased with elevation and plateaued at approximately 1400 m, whereas ECEC linearly increased and C/N decreased with elevation. Fungal communities differed among locations and were correlated with all chemical variables, except PO4, whereas OTU richness increased with total N. Several ecological guilds (i.e., ectomycorrhizae, saprotrophs, plant pathogens) differed in abundance among locations; specifically, saprotroph abundance, primarily attributable to genus Mortierella, was positively correlated with elevation. Ectomycorrhizae declined with total N and soil pH and increased with total C and PO4 where plant pathogens increased with total N and decreased with total C. Finally, our results demonstrate significant turnover in taxonomic and functional fungal groups across elevational gradients which facilitate future predictions on forest ecosystem change in the southern Appalachians as nitrogen deposition rates increase and regional temperature and precipitation regimes shift.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725; DEB0218001; DEB0823293
OSTI ID:
1460223
Journal Information:
Microbial Ecology, Vol. 76, Issue 1; ISSN 0095-3628
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

References (54)

FUNGuild: An open annotation tool for parsing fungal community datasets by ecological guild journal April 2016
UCHIME improves sensitivity and speed of chimera detection journal June 2011
Community and Ecosystem Responses to Elevational Gradients: Processes, Mechanisms, and Insights for Global Change journal November 2013
Morphological and Functional Diversity of Ectomycorrhizal Fungi on Roan Mountain (NC/TN) journal March 2005
Decline of ectomycorrhizal fungi in Europe journal April 1991
The contribution of the Coweeta Hydrologic Laboratory to developing an understanding of long-term (1934–2008) changes in managed and unmanaged forests journal March 2011
Microfungi from Bark of Healthy and Damaged American Beech, Fraser Fir, and Eastern Hemlock Trees During an All Taxa Biodiversity Inventory in Forests of the Great Smoky Mountains National Park journal March 2007
A meta-analysis of mycorrhizal responses to nitrogen, phosphorus, and atmospheric CO2 in field studies journal July 2004
Stipitate hydnoid fungi of the temperate southeastern United States journal September 2013
Cryptococcus spp isolated from dust microhabitat in Brazilian libraries journal January 2012
Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy journal June 2007
Comparison of ectomycorrhizal–basidiomycete communities in red spruce versus northern hardwood forests of West Virginia journal April 1986
Interwoven branches of the plant and fungal trees of life: Letters journal February 2010
Changes in Fungal Community Composition in Response to Elevated Atmospheric CO2 and Nitrogen Fertilization Varies with Soil Horizon journal January 2013
A brief guide to model selection, multimodel inference and model averaging in behavioural ecology using Akaike’s information criterion journal August 2010
Belowground Ectomycorrhizal Fungal Community Change over a Nitrogen Deposition Gradient in Alaska journal January 2002
Modern Applied Statistics with S book August 2002
Hyperdiversity of ectomycorrhizal fungus assemblages on oak seedlings in mixed forests in the southern Appalachian Mountains: DIVERSITY OF OAK SEEDLING ECTOMYCORRHIZAE journal February 2005
Nitrogen Saturation in Temperate Forest Ecosystems journal November 1998
Nitrogen fertilizer dose alters fungal communities in sugarcane soil and rhizosphere journal March 2015
Saprophytic fungal communities change in diversity and species composition across a volcanic soil chronosequence at Sierra del Chichinautzin, Mexico journal March 2010
Nitrogen fertilization reduces diversity and alters community structure of active fungi in boreal ecosystems journal August 2007
Species composition of an ectomycorrhizal fungal community along a local nutrient gradient in a boreal forest journal June 2006
Microfungi of Forest Litter from Healthy American Beech, Fraser Fir, and Eastern Hemlock Stands in Great Smoky Mountains National Park journal December 2009
High-throughput DNA sequencing - concepts and limitations journal May 2010
Specific impacts of beech and Norway spruce on the structure and diversity of the rhizosphere and soil microbial communities journal June 2016
Rhododendron Decline in the Great Smoky Mountains and Surrounding Areas: Intensive Site Study of Biotic and Abiotic Parameters Associated with the Decline journal March 2014
Haplotype Mapping of a Diploid Non-Meiotic Organism Using Existing and Induced Aneuploidies journal January 2008
Status and distribution of stipitate hydnoid fungi in Scottish coniferous forests journal October 2002
Global diversity and geography of soil fungi journal November 2014
The influence of soil properties on the structure of bacterial and fungal communities across land-use types journal September 2008
Diversity and density of the EM fungal community present in high elevation Fraser fir forests of Great Smoky Mountains National Park journal May 2014
Macrofungus communities correlate with moisture and nitrogen abundance in two old-growth conifer forests, Olympic National Park, Washington, USA journal June 2004
Soil microbial communities are shaped by vegetation type and park age in cities under cold climate: Park Soil Microbial Communities journal February 2017
Spore dispersal of a resupinate ectomycorrhizal fungus, Tomentella sublilacina, via soil food webs journal September 2005
Introducing mothur: Open-Source, Platform-Independent, Community-Supported Software for Describing and Comparing Microbial Communities journal October 2009
Mycorrhizal symbionts of Pisonia grandis and P. sechellarum in Seychelles: identification of mycorrhizal fungi and description of new Tomentella species journal May 2010
Biological indices of soil quality: an ecosystem case study of their use journal November 2000
ITS primers with enhanced specificity for basidiomycetes - application to the identification of mycorrhizae and rusts journal April 1993
Estimates of the Atmospheric Deposition of Sulfur and Nitrogen Species:  Clean Air Status and Trends Network, 1990−2000 journal June 2002
Plant species and functional group effects on abiotic and microbial soil properties and plant-soil feedback responses in two grasslands journal September 2006
Barcoded Primers Used in Multiplex Amplicon Pyrosequencing Bias Amplification journal September 2011
How are plant and fungal communities linked to each other in belowground ecosystems? A massively parallel pyrosequencing analysis of the association specificity of root-associated fungi and their host plants journal August 2013
Nitrogen Pollution in the Northeastern United States: Sources, Effects, and Management Options journal January 2003
Nuclear ribosomal internal transcribed spacer (ITS) region as a universal DNA barcode marker for Fungi journal March 2012
454 Pyrosequencing and Sanger sequencing of tropical mycorrhizal fungi provide similar results but reveal substantial methodological biases journal July 2010
Nitrogen deposition and cycling across an elevation and vegetation gradient in southern Appalachian forests journal June 2008
Global diversity and distribution of arbuscular mycorrhizal fungi journal November 2011
Fungal community analysis by high-throughput sequencing of amplified markers - a user's guide journal March 2013
Scraping the bottom of the barrel: are rare high throughput sequences artifacts? journal February 2015
Correction: Exploring Microbial Diversity and Taxonomy Using SSU rRNA Hypervariable Tag Sequencing journal December 2008
Root-Associated Mycobiomes of Common Temperate Plants (Calluna vulgaris and Holcus lanatus) Are Strongly Affected by Winter Climate Conditions journal January 2021
Microbial community structure and functional properties in permanently and seasonally flooded areas in Poyang Lake journal March 2020
Haplotype mapping of a diploid non-meiotic organism using existing and induced aneuploidies journal January 2005

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