Ectomycorrhizal activity as affected by soil liming

Solbritt Andersson

Research output: ThesisDoctoral Thesis (compilation)

Abstract

In this thesis effects of liming on ectomycorrhiza have been studied in relation to effects on root colonization, fungal growth and nutrient uptake. In field experiments the effects of liming on ectomycorrhizal colonization of root tips were variable, possibly due to different soil types and climatic variations. However, a changed mycorrhizal community structure could be detected. Laboratory studies also showed that the substrate may influence the outcome of lime applications. The nutrient status of the substrate had a marked effect on how mycelial growth was affected by liming. Under the experimental conditions used in the studies presented in this thesis, liming reduced the uptake of nitrogen and phosphorus by both mycorrhizal and non-mycorrhizal plants. The amount of extractable nitrogen and phosphorus in the peat was also reduced by liming. The latter could be due to either microbial or chemical immobilization. The lime induced decrease in nitrogen uptake was stronger in non-mycorrhizal plants than in mycorrhizal plants. Thus, the mycorrhizal plants had a higher ability to deal with the negative effects of liming on nitrogen availability than the non-mycorrhizal plants. This was not the case for phosphorus, however. The lime induced decrease in phosphorus uptake was stronger for mycorrhizal plants than non-mycorrhizal plants, and in the highest lime treatment there was no significant difference between the mycorrhizal and the non-mycorrhizal spruce plants.
Original languageEnglish
QualificationDoctor
Awarding Institution
  • Department of Biology
Supervisors/Advisors
  • [unknown], [unknown], Supervisor, External person
Award date1996 May 10
Publisher
Print ISBNs91-7105-075-2
Publication statusPublished - 1996

Bibliographical note

Defence details

Date: 1996-05-10
Time: 10:00
Place: Blå Hallen, Ecology Building, Sölvegatan 37, Lund, Sweden

External reviewer(s)

Name: Jones, Melanie D.
Title: Dr
Affiliation: Biology Department, Okanagan University College, Canada

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The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Microbial Ecology (Closed 2011) (011008001)

Subject classification (UKÄ)

  • Ecology

Keywords

  • bacteriology
  • Microbiology
  • phosphorus
  • nutrient uptake
  • nitrogen
  • mycelial growth
  • liming
  • ectomycorrhiza
  • calcium
  • Pinus sylvestris
  • Picea abies
  • Betula pendula
  • Paxillus involutus
  • virology
  • mycology
  • Mikrobiologi
  • bakteriologi
  • virologi
  • mykologi

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