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. 1985 Jul;78(3):596-600.
doi: 10.1104/pp.78.3.596.

Free space iron pools in roots: generation and mobilization

H F Bienfait  1 , W van den Briel, N T Mesland-Mul
Affiliations

Free space iron pools in roots: generation and mobilization

H F Bienfait et al. Plant Physiol. 1985 Jul.

Abstract

A rapid and simple method for the determination of a ferric iron pool in the free space of roots is described. Formation of this pool depended on the source of iron in the nutrient solution. During growth in water culture at pH 5 to 6 with Fe-ethylenediaminetetraacetate, a free space pool of 500 to 1000 nanomoles Fe per gram fresh weight was formed in the roots of bean (Phaseolus vulgaris L. var. Prélude), maize (Zea mays L. var. Capella), and chlorophytum (Chlorophytum comosum [Thunb.] Jacques). No significant pool (less than 100 nanomoles per gram fresh weight) was formed with ferrioxamine. Upon impending Fe deficiency, bean and chlorophytum were able to mobilize this pool. Fe-deficient bean plants mobilized iron from the free space iron pool of another plant in the same vessel.

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