Abstract
The response mechanisms to Fe chlorosis have been widely studied in herbaceous plants and qulitative and quantitative differences have been found among species and among genotypes within the same species. Similar studies on woody plants are scarce. The objective of this work was to characterize specific response mechanisms in peach rootstocks with differing tolerances to Fe chlorosis in calcareous soils and to determine where acidification and reduction occur along the root system.
Plants were grown individually, in growth chamber, in flasks with 700 mL of aerated nutrient solution with or without Fe. Without Fe, the peach Nemaguard was the most chlorotic, developed the least reducing capacity and mobilized less Fe and Mn from roots to young leaves compared to the other rootstocks. The pH decrease of the nutrient solution with Fe-deficiency was significant only in the plum rootstocks. Using an agar technique, both responses, reducing capacity and acidification, were located at the subapical zones of the roots, although no swollen root tips were apparent.
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References
Ao T Y, Fan F, Korcak R F and Faust M 1985 Iron reduction by apple roots. J. Plant Nutr. 629–644.
Bienfait H F 1988 Mechanisms in Fe-effeciency reactions of higher plants. J. Plant Nutr. 11, 605–629.
Kannan S 1985 Fe-deficiency tolerance in Papaya (Carica papaya L.): pH reduction and chlorosis recovery in response to stress. J. Plant Nutr. 8, 1191–1197.
Marschner H, Römheld V and Ossenberg-Neuhaus H 1982 Rapid method for measuring changes in pH and reducing processes along roots of intact plants. Z. Pflanzenphysiol. Bd. 105, 407–416.
Romera F J, Alcántara E and de laGuardia M D 1990 Characterization of the tolerance to iron chlorosis in different peach rootstocks grown in nutrient solution. I. Effect of bicarbonate and phosphate. Plant and Soil 130, 115–119.
Römheld V 1987 Existence of two different strategies for the acquisition of iron in higher plants. In Iron Transport in Microbes, Plants and Animals. Eds. GWinkelmann, D van derHelm and J BNeilands. pp 353–374. VCH Verlagsges., Weinheim, FRG.
Römheld V and Marschner H 1981 Rhythmic iron stress reactions in sunflower at suboptimal iron supply. Physiol. Plant. 53, 347–353.
Römheld V, Marschner H and Kramer D 1982 Responses to Fe deficiency in roots of Fe-efficient plant species. J. Plant Nutr. 5, 489–498.
Varanini Z and Maggioni A 1982 Iron reduction and uptake by grapevine roots. J. Plant Nutr. 5, 521–529.
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Romera, F.J., Alcántara, E. & de la Guardia, M.D. Characterization of the tolerance to iron chlorosis in different peach rootstocks grown in nutrient solution. Plant Soil 130, 121–125 (1991). https://doi.org/10.1007/BF00011866
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DOI: https://doi.org/10.1007/BF00011866