Step-by-step morpho-physiological responses of Arachis hypogaea L. cv. NC 2 to iron deficiency

Gholizadeh, A. and Baghban Kohnehrouz, B. and Hekmatshoar, H. (2007) Step-by-step morpho-physiological responses of Arachis hypogaea L. cv. NC 2 to iron deficiency. Plant Soil and Envrionment, 53 (7). pp. 290-298.

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Well-aerated and alkaline soils are proven to lack plant-available iron. Fe-efficient plants, however, induce morpho- physiological and biochemical mechanisms of adaptation. These changes in morphology and physiology of the shoot-root systems of peanut (Arachis hypogaea L. cv. NC 2) plants were studied by cultivating them hydroponically in the nutrient solution containing different levels of Fe3+EDDHA (0.00, 0.125, 0.25, 0.50, 1 and 2 ppm). Three types of chlorosis and regreening (I, II, III) on the shoot system appeared simultaneously with three types of rooting (I, II, III) in different stages of plant growth under Fe-free media. The difference in the regreening processes of plants grown in Fe-free and Fe-treated media indicated that their signaling pathways for Fe localization might be different. The morphological responses were found to correlate to three types of regular and rhythmic pH changes in the nutrient solutions. The sites of pH responses and Fe3+ reducing activities in the roots showed dependence on the type of root and shoot morphology.

Item Type: Article
Author Affiliation: Research Institute for Fundamental Sciences, University of Tabriz, Tabriz, Iran
Subjects: Soil Science and Microbiology > Soil Sciences
Plant Physiology and Biochemistry > Plant Physiology
Environmental Science > Environment
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 18 Nov 2010 17:06
Last Modified: 29 Dec 2010 20:28
Official URL:

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