Abstract
The effect of increased Cd2+ concentrations in the watering solution on citrus physiology was studied by using two citrus genotypes, Cleopatra mandarin and Carrizo citrange. Cadmium content in roots and leaves was tested together with measurements of leaf damage, gas exchange parameters, and hormonal contents. Citrus roots efficiently retained Cd2+ avoiding its translocation to the shoots and Cleopatra mandarin translocated less Cd2+ than Carrizo. With increasing Cd2+ concentration all gas exchange parameters were decreased more in Carrizo than in Cleopatra mandarin. Cd-induced increases in abscisic acid and salicylic acid contents were observed in leaves but not in roots of both genotypes.
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Abbreviations
- ABA:
-
abscisic acid
- CC:
-
Carrizo citrange
- CM:
-
Cleopatra mandarin
- JA:
-
jasmonic acid
- SA:
-
salicylic acid
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Acknowledgements
This work was supported by the Spanish Ministerio de Ciencia e Innovación and the Generalitat Valenciana through grants No. AGL2007-65437-C04-03/AGR and ACOMP/2009/091, respectively. Hormone determinations were performed in the central facilities (Servei Central d’Instrumentació CientÍfica, SCIC) of Universitat Jaume I. M.F. López-Climent was recipient of a fellowship from Universitat Jaume I.
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López-Climent, M.F., Arbona, V., Pérez-Clemente, R.M. et al. Effects of cadmium on gas exchange and phytohormone contents in citrus. Biol Plant 55, 187–190 (2011). https://doi.org/10.1007/s10535-011-0028-4
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DOI: https://doi.org/10.1007/s10535-011-0028-4