Cytosolic NADPH Is the Electron Donor for Extracellular FeIII Reduction in Iron-Deficient Bean Roots
Open Access
- 1 May 1984
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 75 (1), 219-221
- https://doi.org/10.1104/pp.75.1.219
Abstract
Pyridine nucleotides were determined in lateral roots of iron-deficient and iron-sufficient Phaseolus vulgaris L. cv Prelude. In iron-deficient plants, total NADP per gram fresh weight and the NADPH/NADP+ ratio were twice the values found in iron-sufficient plants. The NADPH/NADP+ ratio in iron-deficient plants was considerably lowered after a 2 minute incubation in 1 millimolar ferricyanide. Total NAD was not influenced by growth conditions and was mainly present in oxidized form.Keywords
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