Indications of selenium protection against cadmium and lead toxicity in oilseed rape (Brassica napus L.)

Zhilin Wu; Zhilin Wu; Zhilin Wu; Xuebin Yin; Bañuelos S Gary; Zhi-Qing Lin; Ying Liu; Miao Li; Miao Li; Linxi Yuan

doi:10.3389/fpls.2016.01875

Frontiers in Plant Science (Dec 2016)

Indications of selenium protection against cadmium and lead toxicity in oilseed rape (Brassica napus L.)

Zhilin Wu,
Zhilin Wu,
Zhilin Wu,
Xuebin Yin,
Bañuelos S Gary,
Zhi-Qing Lin,
Ying Liu,
Miao Li,
Miao Li,
Linxi Yuan

Affiliations

Zhilin Wu: Key Laboratory of Agri-Food Safety of Anhui Province, Anhui Agricultural University
Zhilin Wu: Suzhou Institute for Advanced Study, University of Science and Technology of China
Zhilin Wu: School of Earth and Space Sciences, University of Science and Technology of China
Xuebin Yin: School of Earth and Space Sciences, University of Science and Technology of China
Bañuelos S Gary: Water Management Research Unit, USDA-ARS
Zhi-Qing Lin: Environmental Sciences Program and Department of Biological Sciences, Southern Illinois University Edwardsville
Ying Liu: Suzhou Institute for Advanced Study, University of Science and Technology of China
Miao Li: Key Laboratory of Agri-Food Safety of Anhui Province, Anhui Agricultural University
Miao Li: Institute of Advanced Technology, University of Science and Technology of China
Linxi Yuan: Institute of Advanced Technology, University of Science and Technology of China

DOI: https://doi.org/10.3389/fpls.2016.01875
Journal volume & issue: Vol. 7

Abstract

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The present study investigated the beneficial role of selenium (Se) in protecting oilseed rape (Brassica napus L.) plants from cadmium (Cd+2) and lead (Pb+2) toxicity. Exogenous Se markedly reduced Cd and Pb concentration in both roots and shoots. Supplementation of the medium with Se (5, 10 and 15 mg kg-1) alleviated the negative effect of Cd and Pb on growth and led to a decrease in oxidative damages caused by Cd and Pb. Furthermore, Se enhanced superoxide free radicals (O2-), hydrogen peroxide (H2O2) and lipid peroxidation, as indicated by malondialdehyde (MDA) accumulation, but decreased superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities. Meanwhile, the presence of Cd and Pb in the medium affected Se speciation in shoots. The results suggest that Se could alleviate Cd and Pb toxicity by preventing oxidative stress in oilseed rape plant.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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