The application of 57Fe Mössbauer spectroscopy in the investigation of iron uptake and translocation in plants uri icon

abstract

  • Mossbauer spectroscopy has been used to study iron uptake and translocation in rice plants. Spectra were collected from intact root and leaf tissue of rice plants grown in anaerobic Fe-57(II)-enriched nutrient solutions. The spectra obtained from root tissue of plants grown in nutrient solutions typical of paddy soils arise primarily from Fe(III)-oxide components precipitated on the root cell walls. In contrast? the spectra obtained from root tissue from plants exposed to lower, toxic, pH conditions show that, in addition to Fe(III), uncomplexed Fe(II) is taken up. No evidence of Fe(II) was seen in the leaf tissue of any of the plants, where the spectra are characteristic of Fe(III) in ferritin and other complexed forms. (C) 2000 Elsevier Science B.V. All rights reserved.

publication date

  • 2000
  • 2000