title: Oxygen-induced free radical in wheat roots.
abstract: ESR experiments have shown that free radicals are formed in wheat plant roots as a result of exposure to O2. Although the radical(s) has not been positively identified, the nature of the spectra allows simple oxygen-derived radicals, such as O2-, HO2. and OH., to be excluded as possibilities. Adsorption of Cu(II), but not Zn(II) or Cd(II) by the root results in a rapid decay of the radical signal to reach a level of 10% of its original intensity after a few minutes.
authors.affiliation: Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, Scotland.
authors.forename: B A
authors.initials: BA
authors.lastname: Goodman
authors.forename: D B
authors.initials: DB
authors.lastname: McPhail
authors.forename: D J
authors.initials: DJ
authors.lastname: Linehan
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D066298:In Vitro Techniques; D010100:Oxygen / Q000494:pharmacology*; D014908:Triticum / Q000502:physiology*
chemical_list: D005609:Free Radicals; D010100:Oxygen