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Organic acids and Fe deficiency: a review

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Abstract

Organic acid concentrations often increase with iron deficiency in different plant parts such as roots, leaves and stem exudates. The review summarises data available on the changes in the concentrations of organic anions in plants with iron deficiency and the effects of these changes in plant metabolism. The paper reviews data available in the literature on the changes in xylem and apoplasmic fluid composition with iron deficiency, both in plants grown in controlled conditions and in the field, and discusses the possible ways of iron complexation and transport in these compartments. The characteristics of the iron reduction and uptake by the iron-deficient leaf mesophyll cells are also discussed, with especial emphasis in the possible roles of organic acids in these processes. Both the possible causes and functions of the organic acid concentration increases in iron-deficient plants are reviewed.

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  1. Departamento de Nutrición Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas, Apdo. 202, E-50080, Zaragoza, Spain

    Javier Abadía, Ana-Flor López-Millán & Anunciación Abadía

  2. Dipartimento di Colture Arboree, Università degli Studi di Bologna, via Filippo Re 6, Bologna, Italy

    Adamo Rombolà

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  1. Javier Abadía
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Abadía, J., López-Millán, AF., Rombolà, A. et al. Organic acids and Fe deficiency: a review. Plant and Soil 241, 75–86 (2002). https://doi.org/10.1023/A:1016093317898

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