Heavy Metals in Sewage Sludges Contribute to Their Adverse Effects on the Arbuscular Mycorrhizal Fungus Glomus mosseae

Applying sewage sludges to agricultural land is a widespread practice because of the sludges' agronomic value as a source of plant nutrients and organic matter. Nevertheless, sludges often contain micropollutants that can constitute a menace for health and the environment. Arbuscular mycorrhiza...

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Bibliographic Details
Published in:Folia geobotanica 2003-01, Vol.38 (2), p.167-176
Main Authors: Jacquot-Plumey, Emmanuelle, Caussanel, Jean-Pierre, Gianinazzi, Silvio, Van Tuinen, Diederik, Gianinazzi-Pearson, Vivienne
Format: Article
Language:English
Subjects:
Biosolids compost
Life Sciences
Mosses
Plant roots
Plants
Sewage sludge
Soil biochemistry
Soil fungi
Soil microorganisms
Soil pollution
Spore germination
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Summary:Applying sewage sludges to agricultural land is a widespread practice because of the sludges' agronomic value as a source of plant nutrients and organic matter. Nevertheless, sludges often contain micropollutants that can constitute a menace for health and the environment. Arbuscular mycorrhizal fungi are sensitive to sewage sludges that have been spiked, or not, with metallic trace elements (MTE). Here we have investigated if MTE in sewage sludges could be responsible for effects on mycorrhizal development between Glomus mosseae and Medicago truncatula. The impact of a dehydrated or composted urban sewage sludge spiked or not with MTE, was tested on spore germination and root colonization by G. mosseae. The sewage sludges depressed both the presymbiotic and in planta stages of development of the mycorrhizal fungus. This negative effect was more related to the metallic pollutant contents of the sludges than to the presence of antagonistic microorganisms or phosphorus.
ISSN:1211-9520
1874-9348
DOI:10.1007/BF02803149