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Adaptive root foraging strategies along a boreal-temperate 1 forest gradient

Title data

Ostonen, Ivika ; Truu, Marika ; Helmisaari, Heljä-Sisko ; Lukac, Martin ; Borken, Werner ; Vanguelova, Elena ; Godbold, Douglas L. ; Lõhmus, Krista ; Zang, Ulrich ; Tedersoo, Leho ; Preem, Jens-Konrad ; Rosenvald, Katrin ; Aosaar, Jürgen ; Armolaitis, Kęstutis ; Frey, Jane ; Kabral, Naima ; Kukumägi, Mai ; Leppälammi-Kujansuu, Jaana ; Lindroos, Antti-Jussi ; Merilä, Päivi ; Napa, Ülle ; Nöjd, Pekka ; Parts, Kaarin ; Uri, Veiko ; Varik, Mats ; Truu, Jaak:
Adaptive root foraging strategies along a boreal-temperate 1 forest gradient.
In: New Phytologist. Vol. 215 (2017) Issue 3 . - pp. 977-991.
ISSN 1469-8137
DOI: https://doi.org/10.1111/nph.14643

Official URL: Volltext

Abstract in another language

• Tree root-mycorhizosphere plays a key role in resource uptake, but also in adaptation of forests to changing environments.• 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°N and 69°N) in Europe. Variables41 describing tree resource uptake structures and processes (absorptive fine root biomass andmorphology, 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 with a shift in soil microbial communitystructure. Soil 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.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER140689
Institutions of the University: Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 09 Jan 2018 14:32
Last Modified: 10 Apr 2018 11:26
URI: https://eref.uni-bayreuth.de/id/eprint/41235