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Adaptive root foraging strategies along a boreal–temperate forest gradient
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SYSNO ASEP 0480004 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Adaptive root foraging strategies along a boreal–temperate forest gradient Author(s) Ostonen, I. (EE)
Truu, M. (EE)
Helmisaari, H.-S. (FI)
Lukač, M. (CZ)
Borken, W. (DE)
Vanguelova, H. (GB)
Godbold, Douglas (UEK-B) ORCID, SAI
Löhmus, K. (EE)
Zang, U. (DE)
Tedersoo, L. (EE)
Preem, J.-K. (EE)
Rosenvald, K. (EE)
Aosaar, J. (EE)
Armolaitis, K. (LT)
Frey, J. (EE)
Kabral, N. (EE)
Kukumägi, M. (EE)
Leppälammi-Kujansuu, J. (FI)
Lindroos, A.-J. (FI)
Merila, P. (FI)
Napa, Ü. (EE)
Nöjd, P. (FI)
Parts, K. (FI)
Uri, V. (EE)
Varik, M. (EE)
Truu, J. (FI)Source Title New Phytologist - ISSN 0028-646X
Roč. 215, č. 3 (2017), s. 977-991Number of pages 15 s. Language eng - English Country GB - United Kingdom Keywords boreal and temperate forests ; climate gradient ; ectomycorrhizal (EcM) mycelium ; fine and ectomycorrhizal root biomass ; root foraging ; root morphology ; soil and rhizosphere bacteria ; soil C ; N ratio Subject RIV EF - Botanics OECD category Plant sciences, botany Method of publishing Open access Institutional support RVO:67179843 - RVO:67179843 UT WOS 000405197500009 EID SCOPUS 85020214882 DOI 10.1111/nph.14643 Annotation The tree root-mycorhizosphere plays a key role in resource uptake, but also in the adaptation of forests to changing environments.
The adaptive foraging mechanisms of ectomycorrhizal (EcM) and fine roots of Picea abies, Pinus sylvestris and Betula pendula were evaluated along a gradient from temperate to subarctic boreal forest (38 sites between latitudes 48 degrees N and 69 degrees N) in Europe. Variables describing tree resource uptake structures and processes (absorptive fine root biomass and morphology, nitrogen (N) concentration in absorptive roots, extramatrical mycelium (EMM) biomass, community structure of root-associated EcM fungi, soil and rhizosphere bacteria) were used to analyse relationships between root system functional traits and climate, soil and stand characteristics.
Absorptive fine root biomass per stand basal area increased significantly from temperate to boreal forests, coinciding with longer and thinner root tips with higher tissue density, smaller EMM biomass per root length and a shift in soil microbial community structure. The soil carbon (C) : N ratio was found to explain most of the variability in absorptive fine root and EMM biomass, root tissue density, N concentration and rhizosphere bacterial community structure.
We suggest a concept of absorptive fine root foraging strategies involving both qualitative and quantitative changes in the root-mycorrhiza-bacteria continuum along climate and soil C : N gradients.Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2018 Electronic address https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.14643
Number of the records: 1