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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/22046

Title: The role of phosphorus, magnesium and potassium availability in soil fungal exploration of mineral nutrient sources in Norway spruce forests
Authors: Rosenstock, Nicholas P.
Berner, Christoffer
Smits, Mark M.
Kram, Pavel
Wallander, Hakan
Issue Date: 2016
Citation: NEW PHYTOLOGIST, 211(2), p. 542-553
Abstract: We investigated fungal growth and community composition in buried meshbags, amended with apatite, biotite or hornblende, in Norway spruce (Picea abies) forests of varying nutrient status. Norway spruce needles and soil collected from forests overlying serpentinite had low levels of potassium and phosphorus, those from granite had low levels of magnesium, whereas those from amphibolite had comparably high levels of these nutrients. We assayed the fungal colonization of meshbags by measuring ergosterol content and fungal community with 454 sequencing of the internal transcribed spacer region. In addition, we measured fine root density. Fungal biomass was increased by apatite amendment across all plots and particularly on the K-and P-deficient serpentinite plots, whereas hornblende and biotite had no effect on fungal biomass on any plots. Fungal community (total fungal and ectomycorrhizal) composition was affected strongly by sampling location and soil depth, whereas mineral amendments had no effect on community composition. Fine root biomass was significantly correlated with fungal biomass. Ectomycorrhizal communities may respond to increased host-tree phosphorus demand by increased colonization of phosphorus-containing minerals, but this does not appear to translate to a shift in ectomycorrhizal community composition. This growth response to nutrient demand does not appear to exist for potassium or magnesium limitation.
Notes: [Rosenstock, Nicholas P.] Lund Univ, Ctr Environm & Climate Res, SE-22362 Lund, Sweden. [Berner, Christoffer] Linnaeus Univ, Ctr Ecol & Evolut Microbial Model Syst EEMiS, SE-39182 Kalmar, Sweden. [Smits, Mark M.] Hasselt Univ, Ctr Environm Sci, Bldg D, B-3590 Diepenbeek, Limburg, Belgium. [Kram, Pavel] Czech Geol Survey, Klarov 3, Prague 11821 1, Czech Republic. [Wallander, Hakan] Lund Univ, Dept Biol, MEMEG, SE-22362 Lund, Sweden.
URI: http://hdl.handle.net/1942/22046
DOI: 10.1111/nph.13928
ISI #: 000379213200017
ISSN: 0028-646X
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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