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Potential contribution of arbuscular mycorrhiza to cadmium immobilisation in soil.
Chemosphere. 2006 Dec; 65(11):1959-65.C

Abstract

The contribution of arbuscular mycorrhiza (AM) to immobilisation of Cd in substrate was studied in two experiments. In the first experiment, substrates prepared by cultivating tobacco, either non-mycorrhizal or inoculated with the AM fungus Glomus intraradices were enriched with a range of Cd concentrations, and Cd toxicity in the substrates was assessed using root growth tests with lettuce as a test plant. The tests revealed lower Cd toxicity in the mycorrhizal than in the non-mycorrhizal substrate, and the difference increased with increasing total Cd concentration in the substrates. In the second experiment, extraradical mycelium (ERM) of G. intraradices exposed in vivo to Cd was collected and analysed on Cd concentration. The ERM accumulated 10-20 times more Cd per unit of biomass than tobacco roots. While Cd concentrations were lower in the biomass of mycorrhizal plants than of non-mycorrhizal plants, Cd immobilisation by ERM did not affect the total Cd content in mycorrhizal tobacco. It is concluded that mycorrhiza may decrease Cd toxicity to plants by enhancing Cd immobilisation in soil. The results therefore suggest a potential role of AM symbiosis in the phytostabilisation of contaminated soils, where high Cd availability inhibits plant growth.

Authors+Show Affiliations

Department of Mycorrhizal Symbioses, Institute of Botany, Academy of Sciences of the Czech Republic, 252 43 Pruhonice, Czech Republic. janouskova@ibot.cas.czNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16905176

Citation

Janousková, M, et al. "Potential Contribution of Arbuscular Mycorrhiza to Cadmium Immobilisation in Soil." Chemosphere, vol. 65, no. 11, 2006, pp. 1959-65.
Janousková M, Pavlíková D, Vosátka M. Potential contribution of arbuscular mycorrhiza to cadmium immobilisation in soil. Chemosphere. 2006;65(11):1959-65.
Janousková, M., Pavlíková, D., & Vosátka, M. (2006). Potential contribution of arbuscular mycorrhiza to cadmium immobilisation in soil. Chemosphere, 65(11), 1959-65.
Janousková M, Pavlíková D, Vosátka M. Potential Contribution of Arbuscular Mycorrhiza to Cadmium Immobilisation in Soil. Chemosphere. 2006;65(11):1959-65. PubMed PMID: 16905176.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Potential contribution of arbuscular mycorrhiza to cadmium immobilisation in soil. AU - Janousková,M, AU - Pavlíková,D, AU - Vosátka,M, Y1 - 2006/08/14/ PY - 2006/03/13/received PY - 2006/06/30/revised PY - 2006/07/04/accepted PY - 2006/8/15/pubmed PY - 2007/1/31/medline PY - 2006/8/15/entrez SP - 1959 EP - 65 JF - Chemosphere JO - Chemosphere VL - 65 IS - 11 N2 - The contribution of arbuscular mycorrhiza (AM) to immobilisation of Cd in substrate was studied in two experiments. In the first experiment, substrates prepared by cultivating tobacco, either non-mycorrhizal or inoculated with the AM fungus Glomus intraradices were enriched with a range of Cd concentrations, and Cd toxicity in the substrates was assessed using root growth tests with lettuce as a test plant. The tests revealed lower Cd toxicity in the mycorrhizal than in the non-mycorrhizal substrate, and the difference increased with increasing total Cd concentration in the substrates. In the second experiment, extraradical mycelium (ERM) of G. intraradices exposed in vivo to Cd was collected and analysed on Cd concentration. The ERM accumulated 10-20 times more Cd per unit of biomass than tobacco roots. While Cd concentrations were lower in the biomass of mycorrhizal plants than of non-mycorrhizal plants, Cd immobilisation by ERM did not affect the total Cd content in mycorrhizal tobacco. It is concluded that mycorrhiza may decrease Cd toxicity to plants by enhancing Cd immobilisation in soil. The results therefore suggest a potential role of AM symbiosis in the phytostabilisation of contaminated soils, where high Cd availability inhibits plant growth. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16905176/Potential_contribution_of_arbuscular_mycorrhiza_to_cadmium_immobilisation_in_soil_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(06)00864-2 DB - PRIME DP - Unbound Medicine ER -