ESEG_Reactions of aluminium with plant cell walls: implications for Al stress (2005–2006)

Abstract:
Soil acidity due to natural causes or exacerbated by human action leads to aluminium (Al) toxicity impairing crop production on ca. 50 million ha in Australia. Al-toxicity inhibits root growth but the underlying mechanisms are unclear and form the focus of this project. Aluminium binds to anionic charges in the cell wall and we hypothesise that the distribution of binding sites influences expression of toxicity symptoms by influencing the conversion of soluble Al to more toxic non-exchangeable Al forms. We aim to investigate the kinetics and extent of Al conversion as influenced by the root CEC linear charge density pH and organic acid exudation. The outcome will help understand why Al is so toxic to plants and many other organisms
Grant type:
UQ External Support Enabling Grant
Researchers:
  • Head of School - SAFS
    School of Agriculture and Food Sciences
    Faculty of Science
    Affiliated Professor
    Centre for Crop Science
    Queensland Alliance for Agriculture and Food Innovation
Funded by:
University of Queensland