Role of Low Molecular Weight Compounds in Cadmium Stress Tolerance

Abstract Plants produce a wide range of protective metabolites aimed at increasing tolerance to metallic stress. Among them, general plant antioxidants ascorbic acid (AsA) and reduced glutathione (GSH), or metal-chelating compounds, such as phytochelatins (PCs) and simple aliphatic organic acids (oxalic, citric, and malic acids mainly), are the most common. These metabolites are not only affected by cadmium (Cd) excess but may also be used aimed at increasing Cd accumulation for remediation purposes, e.g., through exogenous application. Various transgenic plant species with altered ascorbate/thiol content have also been developed with potential use in phytoremediation. The general overview of quantitative changes of these metabolites and respective genes/enzymes in Cd-stressed plants along with physiology of genetically modified plants is presented. Tables with selected example species contain absolute values of the given parameter (rather than relative % change) in order to provide better comparative information for readers. Some data are also critically discussed.

• Publication year

  2019

• Venue

  Cadmium Tolerance in Plants

• Publication date

  Unknown publication date

• Fields of study

  Biology, Chemistry, Environmental Science

• Identifiers
  DOI 10.1016/B978-0-12-815794-7.00011-4
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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