Interaction and accumulation of manganese and cadmium in the manganese accumulator Lupinus albus
Entity
UAM. Departamento de Química AgrícolaPublisher
Elsevier GmbHDate
2010-09-01Citation
10.1016/j.jplph.2010.02.011
Journal of Plant Physiology 167.13 (2010): 1027-1032
ISSN
0176-1617 (print); 1618-1328 (on line)DOI
10.1016/j.jplph.2010.02.011Funded by
This work was funded by the Spanish Ministry of Education and Science (project CTM2005-04809/TECNO)Editor's Version
http://dx.doi.org/10.1016/j.jplph.2010.02.011Subjects
Antioxidant compounds; Cadmium; Lupinus albus L.; Manganese; Stress indicators; QuímicaNote
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Plant Physiology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Plant Physiology, 167, 13 (2010) DOI http://dx.doi.org/10.1016/j.jplph.2010.02.011Rights
© 2010 Elsevier GmbHEsta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
The effects of the interaction between Mn and Cd on the growth of the white lupin (Lupinus albus), uptake of these metals, their accumulation, and effects on heavy metal stress indicators were studied under glasshouse conditions. Plants were grown with and without Mn and/or Cd for 4 weeks. The absence of Mn and Cd led to lipid peroxidation-induced loss of flavonoids and anthocyanins in the roots, reduced the size of the plant canopy, and led to the appearance of proteoid roots. Sensitivity to Cd in white lupin was enhanced by a low Mn supply, despite lower Cd uptake and accumulation (leaf Mn:Cd concentration ratio <3), as evidenced by increased lipid peroxidation in the leaves and strong inhibition of growth. However, when the Mn supply was adequate, the plants showed few symptoms of Cd toxicity, even though Cd uptake and accumulation increased. A Mn:Cd ratio of up to 20 was enough to minimize Cd stress in the leaf, reflecting the plants' relative tolerance to Cd under such conditions. Irrespective of the Mn supply, the increase in antioxidant compounds observed in the roots of Cd-treated plants might act as a protective mechanism by minimizing the oxidative stress caused by Cd exposure. In summary, high leaf Mn concentrations seem to render white lupins more tolerant to Cd stress
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Google Scholar:Zornoza, Pilar
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Sánchez-Pardo, Beatriz
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Carpena-Ruiz, Ramón O.
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