Rotter Meda, Anderson:
ISBN 9783899598018

Iron transport pathways and their interactions with heavy metals in plants # Pb., 198 S., 40 Abb., davon 15 in Farbe, 4 Tab.
Plant nutrition
Plant physiology
Plant cell biology
Arabidopsis Thaliana
Micronutrients

Iron (Fe) is an essential element for plants, which is mainly required for electron transfer processes in the cell. Although Fe is abundant in soils, the availability of Fe for plants can be limited, particularly in calcareous soils. In order to improve Fe solubility in the rhizosphere, plants have evolved two different strategies, which are based either on Fe(III) chelation or Fe(III) reduction. However, Fe acquisition can be poorly selective against toxic heavy metals. Since plants are significant Fe sources for human nutrition and represent the major route for the entry of deleterious heavy metals into the food chain, the present study was set up to characterize Fe transport pathways and their interactions with heavy metals in plants. It discusses the role of Fe deficiency-induced mechanisms and Fe acquisition strategies to improve Fe contents while decreasing heavy metal uptake or increasing heavy metal tolerance in plants. Moreover, a novel cellular process related to Fe recycling has been identified, which can improve intracellular Fe efficiency. In the light of the new findings, approaches to increase tolerance to Fe deficiency-induced chlorosis in agricultural crop plants are presented.

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