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Pine mycorrhizal communities in pure and mixed pine-oak forests: Abiotic environment trumps neighboring oak host effects

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Title: Pine mycorrhizal communities in pure and mixed pine-oak forests: Abiotic environment trumps neighboring oak host effects
Authors: Suz, LM
Kallow, S
Reed, K
Bidartondo, MI
Barsoum, N
Item Type: Journal Article
Abstract: Scots pine (Pinus sylvestris) is frequently planted as a monoculture, but it is also grown in mixed plantations with other native trees such as pedunculate oak (Quercus robur). Both pine and oak form ectomycorrhizas that cover their roots and extend into the soil, facilitating tree water and nutrient uptake in exchange for photosynthetic carbon. Forming the interface between the soil and tree roots, mycorrhizal fungi are key drivers of biogeochemical cycling in terrestrial ecosystems and play an important role in the successful establishment of tree seedlings. They can, however, be susceptible to changes in the soil environment and in their hosts. Both environment and neighboring hosts affect how fungi colonize roots and may affect their host preference. Despite the importance of mycorrhizal fungi in forest ecosystems, little is known about the biodiversity and functional effects of mycorrhizal communities in mixed compared with monoculture plantations. Changes in mycorrhizal richness and composition can result in changes in functional groups with consequences for forest ecosystem stability and functioning. We compared pine mycorrhizas in eight mixed plantations of pine and oak and eight pine monocultures in two forests in England, and we investigated the main factors driving their taxonomic and functional composition. Geographical location and litter pH explained over 50% of the variation in pine mycorrhizal communities. Different environmental factors affected taxonomic and functional composition across stands, indicating functional redundancy. Pine tended to associate with more fungi in the presence of oak, but the abiotic environment exerted a stronger influence than oak presence on pine mycorrhizal diversity.
Issue Date: 18-Oct-2017
Date of Acceptance: 11-Sep-2017
URI: http://hdl.handle.net/10044/1/55818
DOI: https://dx.doi.org/10.1016/j.foreco.2017.09.030
ISSN: 0378-1127
Publisher: Elsevier
Start Page: 370
End Page: 380
Journal / Book Title: Forest Ecology and Management
Volume: 406
Copyright Statement: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Natural Environment Research Council (NERC)
Funder's Grant Number: NE/K006339/1
Keywords: Science & Technology
Life Sciences & Biomedicine
Forestry
Pinus sylvestris
Quercur robur
Monocultures
Polycultures
Ectomycorrhizas
Diversification
ECTOMYCORRHIZAL FUNGAL COMMUNITIES
SCOTS PINE
NITROGEN DEPOSITION
PSEUDOTSUGA-MENZIESII
SPECIES PLANTATIONS
SEQUENCE ALIGNMENT
EXPLORATION TYPES
SYLVESTRIS L.
QUERCUS SPP.
NE GERMANY
07 Agricultural And Veterinary Sciences
05 Environmental Sciences
06 Biological Sciences
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences



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