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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/19846

Title: Oxidative Stress Induced by Cadmium and Copper in Brassica rapa Leaves: Indicators of Stress, Oxidative Damage, and Antioxidant Mechanisms
Authors: Moreira, Ines Neto
Mourato, Miguel Pedro
Amaral Dos Reis, Rafaela
Martins, Luisa Louro
Issue Date: 2015
Publisher: TAYLOR & FRANCIS INC
Citation: COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 46 (19), p. 2475-2489
Abstract: Brassica rapa is frequently used as a vegetable for human consumption and can accumulate metals that are bioavailable in soils. We studied the oxidative stress induced by 25M cadmium (Cd) and 50M copper (Cu) on Brassica rapa leaves and evaluated the intracellular antioxidative plant response mechanisms and the accumulation of these metals. With this purpose, hydrogen peroxide (H2O2) concentration, lipid peroxidation, and enzymatic and nonenzymatic responses was determined. The obtained results indicate that Cd and Cu induced different plant responses. Oxidative stress induced by Cu was characterized by increased lipid peroxidation and free proline levels. Guaiacol peroxidase and ascorbate peroxidase showed a relevant role in H2O2 removal. Cadmium did not influence lipid peroxidation, H2O2, proline and glutathione contents, and the enzymatic response mainly involves superoxide dismutase and ascorbate peroxidase. It was concluded that both excess Cu and Cd induced oxidative stress but plant response is characterized by different antioxidative response mechanisms.
Notes: [Moreira, Ines Neto; Mourato, Miguel Pedro; Martins, Luisa Louro] Univ Lisbon, Inst Super Agron, UIQA, P-1349017 Lisbon, Portugal. [Reis, Rafaela] Univ Hasselt, Ctr Environm Sci, CMK, Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/19846
DOI: 10.1080/00103624.2015.1085554
ISI #: 000364223200007
ISSN: 0010-3624
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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