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Type: Journal article
Title: Arbuscular mycorrhizas reduce nitrogen loss via leaching
Author: Asghari, H.
Cavagnaro, T.
Citation: PLoS One, 2012; 7(1):e29825-1-e29825-5
Publisher: Public Library of Science
Issue Date: 2012
ISSN: 1932-6203
Statement of
Hamid R. Asghari, Timothy R. Cavagnaro
Abstract: The capacity of mycorrhizal and non-mycorrhizal root systems to reduce nitrate (NO3−) and ammonium (NH4+) loss from soils via leaching was investigated in a microcosm-based study. A mycorrhiza defective tomato mutant and its mycorrhizal wildtype progenitor were used in this experiment in order to avoid the indirect effects of establishing non-mycorrhizal control treatments on soil nitrogen cycling and the wider soil biota. Mycorrhizal root systems dramatically reduced nitrate loss (almost 40 times less) via leaching, compared to their non-mycorrhizal counterparts, following a pulse application of ammonium nitrate to experimental microcosms. The capacity of AM to reduce nutrient loss via leaching has received relatively little attention, but as demonstrated here, can be significant. Taken together, these data highlight the need to consider the potential benefits of AM beyond improvements in plant nutrition alone.
Keywords: Mycorrhizae; Lycopersicon esculentum; Plant Shoots; Nitrates; Nitrogen; Soil; Colony Count, Microbial; Genotype; Quaternary Ammonium Compounds
Rights: 2012 Asghari, Cavagnaro. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
RMID: 0020138155
DOI: 10.1371/journal.pone.0029825
Appears in Collections:Earth and Environmental Sciences publications

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