Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/83446
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Type: Journal article
Title: Arbuscular mycorrhizas enhance plant interception of leached nutrients
Author: Asghari, H.
Cavagnaro, T.
Citation: Functional Plant Biology, 2011; 38(3):219-226
Publisher: C S I R O Publishing
Issue Date: 2011
ISSN: 1445-4408
1445-4416
Statement of
Responsibility: 
Hamid Reza Asghari and Timothy Richard Cavagnaro
Abstract: Arbuscular mycorrhizal fungi (AMF) can increase plant growth and nutrition. However, their capacity to reduce the leaching of nutrients through the soil profile is less well understood. Here we present results of an experiment in which the effects of forming arbuscular mycorrhizas (AM) on plant growth and nutrition, nutrient depletion from soil, and nutrient leaching, were investigated in microcosms containing the grass Phalaris aquatica L. Mycorrhizal and non-mycorrhizal plants were grown in a mixture of riparian soil and sand under glasshouse conditions. The formation of AM by P. aquatica significantly increased plant growth and nutrient uptake. Lower levels of NO₃⁻, NH₄⁺ and plant available P in both soil and leachate were observed in columns containing mycorrhizal root systems. These differences in nutrient interception were proportionally greater than the increase in root biomass of the mycorrhizal plants, compared with their non-mycorrhizal counterparts. Taken together, these data indicate that mycorrhizal root systems have an important, but previously little considered, role to play reducing the net loss of nutrients via leaching.
Keywords: AM; nutrient leaching; Phalaris aquatica; riparian zones
Rights: © CSIRO 2011
RMID: 0020138168
DOI: 10.1071/FP10180
Appears in Collections:Earth and Environmental Sciences publications

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