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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/10541

Title: Nutrient Supply Rate and Mycorrhizal Colonization Control Patterns of Element Distribution in Ectomycorrhizal Pine
Authors: Hobbie, Erik A.
Hoff, Claire J.
Bryce, Julia G.
COLPAERT, Jan
Hallett, Richard A.
Issue Date: 2009
Publisher: TAYLOR & FRANCIS INC
Citation: COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 40 (21-22). p. 3503-3523
Abstract: Ectomycorrhizal fungi may provide plants access to nonexchangeable nutrients. We measured nutrients (potassium, calcium, magnesium, manganese, iron, and aluminum) in roots and foliage in nonmycorrhizal and ectomycorrhizal Pinus sylvestris cultured in perlite at two nutrient supply levels. We also measured nutrients in perlite leachates from abiotic experiments using hydrochloric or oxalic acid at pH2-4. Twenty-one percent more potassium and 30% more calcium accumulated in nonmycorrhizal plants than in ectomycorrhizal plants, presumably because of nutrient sequestration in extraradical fungal biomass. Plants at low nutrient supply accumulated 22% more potassium and 23% more calcium than at high nutrient supply, presumably because of additional mobilization of nutrients from perlite by plant and fungal acids. Significantly more leaching at pH2 with oxalic than with hydrochloric acid occurred, probably caused by enhanced ligand-mediated dissolution with oxalic acid. Leaching of minerals by organic acids may enhance plant nutrient supply, particularly from microsites of low pH.
Notes: [Hobbie, Erik A.; Hoff, Claire J.] Univ New Hampshire, Complex Syst Res Ctr, Durham, NH 03824 USA. [Hoff, Claire J.; Bryce, Julia G.] Univ New Hampshire, Dept Earth Sci, Durham, NH 03824 USA. [Colpaert, Jan V.] Hasselt Univ, Ctr Environm Sci, Diepenbeek, Belgium. [Hallett, Richard A.] US Forest Serv, No Res Stn, Durham, NH USA. erik.hobbie@unh.edu
URI: http://hdl.handle.net/1942/10541
DOI: 10.1080/00103620903326032
ISI #: 000274286100020
ISSN: 0010-3624
Category: A1
Type: Journal Contribution
Validation: ecoom, 2011
Appears in Collections: Research publications

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