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The role of phosphorus, magnesium and potassium availability in soil fungal exploration of mineral nutrient sources in Norway spruce forests

Rosenstock, Nicholas P. LU ; Berner, Christoffer LU ; Smits, Mark M. LU ; Krám, Pavel and Wallander, Håkan LU (2016) In 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... (More)

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.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ectomycorrhizal fungi (EMF), Ergosterol, Fungal community composition, Hyphae, Minerals, Norway spruce (Picea abies), Soil nutrients
in
New Phytologist
volume
211
issue
2
pages
12 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:84961832244
  • wos:000379213200017
  • scopus:84976515032
ISSN
0028-646X
DOI
10.1111/nph.13928
language
English
LU publication?
yes
id
01ecb000-5cb3-4f72-b11f-9863b335bc99
date added to LUP
2016-09-22 08:38:48
date last changed
2017-08-27 06:24:04
@article{01ecb000-5cb3-4f72-b11f-9863b335bc99,
  abstract     = {<p>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.</p>},
  author       = {Rosenstock, Nicholas P. and Berner, Christoffer and Smits, Mark M. and Krám, Pavel and Wallander, Håkan},
  issn         = {0028-646X},
  keyword      = {Ectomycorrhizal fungi (EMF),Ergosterol,Fungal community composition,Hyphae,Minerals,Norway spruce (Picea abies),Soil nutrients},
  language     = {eng},
  number       = {2},
  pages        = {542--553},
  publisher    = {Wiley-Blackwell},
  series       = {New Phytologist},
  title        = {The role of phosphorus, magnesium and potassium availability in soil fungal exploration of mineral nutrient sources in Norway spruce forests},
  url          = {http://dx.doi.org/10.1111/nph.13928},
  volume       = {211},
  year         = {2016},
}