Selenium in higher plants: understanding mechanisms for biofortification and phytoremediation

Yongguan Zhu, Elizabeth A. H. Pilon-Smits, Zhi Jun Zhao, Paul Nicholas Williams, Andrew Alexander Meharg

Research output: Contribution to journalLiterature review

322 Citations (Scopus)

Abstract

Selenium (Se) is an essential micronutrient for many organisms, including plants, animals and humans. As plants are the main source of dietary Se, plant Se metabolism is therefore important for Se nutrition of humans and other animals. However, the concentration of Se in plant foods varies between areas, and too much Se can lead to toxicity. As we discuss here, plant Se uptake and metabolism can be exploited for the purposes of developing high-Se crop cultivars and for plant-mediated removal of excess Se from soil or water. Here, we review key developments in the current understanding of Se in higher plants. We also discuss recent advances in the genetic engineering of Se metabolism, particularly for biofortification and phytoremediation of Se-contaminated environments.

Original languageEnglish
Pages (from-to)436-442
Number of pages7
JournalTrends in Plant Science
Volume14
Issue number8
DOIs
Publication statusPublished - Aug 2009

Keywords

  • HPLC-ICP-MS
  • FOOD-CHAIN SELENIUM
  • INDIAN MUSTARD
  • BRASSICA-JUNCEA
  • SELENOCYSTEINE METHYLTRANSFERASE
  • ARABIDOPSIS-THALIANA
  • STANLEYA-PINNATA
  • HUMAN HEALTH
  • WHEAT-GRAIN
  • SELENATE

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