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Effects of liming on the uptake of organic and inorganic nitrogen by mycorrhizal (Paxillus involutus) and non-mycorrhizal Pinus sylvestris plants
Ekologiska institutionen, Lunds Universitet.
Ekologiska institutionen, Lunds Universitet.
Ekologiska institutionen, Lunds Universitet.
1997 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 135, no 4, 763-771 p.Article in journal (Refereed) Published
Abstract [en]

Seedlings of Pinus sylvestris L. were grown in Plexiglas(R) observation chambers in limed (CaCO3, pH 5.0 and 5.9) and untreated (pH 4.1) peat. The seedlings were either colonized by the mycorrhizal fungus Paxillus involutus (Batsch: Fr.) Fr. Or were non-mycorrhizal. After 18 wk in the observation chambers, N-15-labelled organic nitrogen, as lyophilized and ground mycelium of Suillus variegatus (Swartz: Fr.) O. Kuntze, or ammonium, was added to the peat. The plants were harvested after an uptake period of 14 d. Irrespective of the nitrogen form added, liming decreased both the content and concentration of N-15 in nonmycorrhizal plants, and, to a lesser extent, those in mycorrhizal plants. In mycorrhizal plants the uptake of N-15 was not correlated with area colonized by the mycorrhizal mycelium. The amount of KCl-extractable N-15 in peat without plants and mycorrhizal fungi decreased with liming. It is proposed that liming induced chemical or microbial immobilization of the added N-15. This is suggested to be the main reason for the decreased uptake of N-15 in lime treatments.

Place, publisher, year, edition, pages
1997. Vol. 135, no 4, 763-771 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-11593DOI: 10.1046/j.1469-8137.1997.00692.xISI: A1997WW80400020OAI: oai:DiVA.org:lnu-11593DiVA: diva2:415349
Available from: 2011-05-06 Created: 2011-05-06 Last updated: 2014-10-28Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
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  • ieee
  • modern-language-association-8th-edition
  • vancouver
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Language
  • de-DE
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  • fi-FI
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