Arsenic uptake and metabolism in arsenic resistant and nonresistant plant species

Andrew A. Meharg*, Jeanette Hartley-Whitaker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

861 Citations (Scopus)

Abstract

Elevation of arsenic levels in soils causes considerable concern with respect to plant uptake and subsequent entry into wildlife and human food chains, Arsenic speciation in the environment is complex, existing in both inorganic and organic forms, with interconversion between species regulated by biotic and abiotic processes. To understand and manage the risks posed by soil arsenic it is essential to know how arsenic is taken up by the roots and metabolized within plants. Some plant species exhibit phenotypic variation in response to arsenic species, which helps us to understand the toxicity of arsenic and the way in which plants have evolved arsenic resistances. This knowledge, for example, could be used produce plant cultivars that are more arsenic resistant or that have reduced arsenic uptake. This review synthesizes current knowledge on arsenic uptake, metabolism and toxicity for arsenic resistant and nonresistant plants, including the recently discovered phenomenon of arsenic hyperaccumulation in certain fern species. The reasons why plants accumulate and metabolize arsenic are considered in an evolutionary context.

Original languageEnglish
Pages (from-to)29-43
Number of pages15
JournalNew Phytologist
Volume154
Issue number1
DOIs
Publication statusPublished - 2002

Keywords

  • Arsenic
  • Arsenic resistance
  • Hyperaccumulation
  • Metabolism
  • Phenotypic variation
  • Toxicity
  • Uptake

ASJC Scopus subject areas

  • Plant Science
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Fingerprint

Dive into the research topics of 'Arsenic uptake and metabolism in arsenic resistant and nonresistant plant species'. Together they form a unique fingerprint.

Cite this