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Cellular mechanisms for heavy metal detoxification and tolerance

Record type: Article

Heavy metals such as Cu and Zn are essential for normal plant growth, although elevated concentrations of both essential and non-essential metals can result in growth inhibition and toxicity symptoms. Plants possess a range of potential cellular mechanisms that may be involved in the detoxification of heavy metals and thus tolerance to metal stress. These include roles for the following: for mycorrhiza and for binding to cell wall and extracellular exudates; for reduced uptake or efflux pumping of metals at the plasma membrane; for chelation of metals in the cytosol by peptides such as phytochelatins; for the repair of stress-damaged proteins; and for the compartmentation of metals in the vacuole by tonoplast-located transporters. This review provides a broad overview of the evidence for an involvement of each mechanism in heavy metal detoxification and tolerance.

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Citation

Hall, J.L. (2002) Cellular mechanisms for heavy metal detoxification and tolerance Journal of Experimental Botany, 53, (366), pp. 1-11.

More information

Submitted date: 22 June 2001
Published date: 1 January 2002
Keywords: detoxification, heat shock proteins, heavy metal tolerance, metallothioneins, mycorrhiza, phytochelatins, plasma membrane, vacuolar compartmentation

Identifiers

Local EPrints ID: 55725
URI: http://eprints.soton.ac.uk/id/eprint/55725
ISSN: 0022-0957
PURE UUID: 42faf892-80df-467d-acf8-001a10b050ce

Catalogue record

Date deposited: 05 Aug 2008
Last modified: 17 Jul 2017 14:32

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Contributors

Author: J.L. Hall

University divisions

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