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https://hdl.handle.net/2440/126161
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Type: | Journal article |
Title: | Effects of plant roots and arbuscular mycorrhizas on soil phosphorus leaching |
Author: | Tran, C.T.K. Watts-Williams, S.J. Smernik, R.J. Cavagnaro, T.R. |
Citation: | Science of the Total Environment, 2020; 722:137847-1-137847-9 |
Publisher: | Elsevier BV |
Issue Date: | 2020 |
ISSN: | 0048-9697 1879-1026 |
Statement of Responsibility: | Cuc T.K. Tran, Stephanie J.Watts-Williams, Ronald J. Smernik, Timothy R. Cavagnaro |
Abstract: | While the impact of arbuscular mycorrhizal fungi (AMF) on phosphorus (P) uptake is well understood, the mechanism(s) of how these fungi affect P leaching from soil is still unclear. Here we present results of a study in which we grew a mycorrhiza-defective tomato (Solanum lycopersicum L.) genotype (named rmc) and its mycorrhizal wild-type progenitor (named 76R) in microcosms containing non-sterile soil, to examine the influence of roots and AMF on P leaching. More P was leached from the planted microcosms as compared to the plant-free controls. Further, although there was more plant biomass and greater P uptake in the mycorrhizal plant treatments, these treatments were associated with the most leaching of total P, reactive P, and dissolved organic carbon (DOC). There was a strong correlation between the total P and DOC leached, suggesting that root and fungal exudates may have affected P leaching. These findings provide new insights into the impact of roots and AMF on nutrient leaching in soils. |
Keywords: | Arbuscular mycorrhizal fungi Dissolved organic carbon Mycorrhiza-defective tomato mutant Phosphorus Reactive phosphorus Unreactive phosphorus |
Description: | Available online 10 March 2020 |
Rights: | © 2020 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.scitotenv.2020.137847 |
Grant ID: | http://purl.org/au-research/grants/arc/CE140100008 |
Published version: | http://dx.doi.org/10.1016/j.scitotenv.2020.137847 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 4 |
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