title: Indications of Selenium Protection against Cadmium and Lead Toxicity in Oilseed Rape (Brassica napusL.).
abstract: The present study investigated the beneficial role of selenium (Se) in protecting oilseed rape (Brassica napusL.) 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 ([Formula: see text]), hydrogen peroxide (H2O2), and lipid peroxidation, as indicated by malondialdehyde accumulation, but decreased superoxide dismutase and glutathione peroxidase 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.
authors.affiliation: Key Laboratory of Agri-Food Safety of Anhui Province, Scientific Observing and Experimental Station of Agricultural Environment of the Ministry of Agriculture - Laboratory of Quality and Safty Risk Assessment for Agricultural Products on Storage and Preservation of the Ministry of Agriculture, School of Plant Protection - School of Resources and Environment, Anhui Agricultural UniversityHefei, China; School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China; Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China.
authors.forename: Zhilin
authors.initials: Z
authors.lastname: Wu
authors.affiliation: School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China; Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China; Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China.
authors.forename: Xuebin
authors.initials: X
authors.lastname: Yin
authors.affiliation: San Joaquin Valley Agricultural Sciences Center, United States Department of Agriculture - Agricultural Research Service, Parlier CA, USA.
authors.forename: Gary S
authors.initials: GS
authors.lastname: Bañuelos
authors.affiliation: Environmental Sciences Program and Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville IL, USA.
authors.forename: Zhi-Qing
authors.initials: ZQ
authors.lastname: Lin
authors.affiliation: School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China; Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China; Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Agri-Food Safety of Anhui Province, Scientific Observing and Experimental Station of Agricultural Environment of the Ministry of Agriculture - Laboratory of Quality and Safty Risk Assessment for Agricultural Products on Storage and Preservation of the Ministry of Agriculture, School of Plant Protection - School of Resources and Environment, Anhui Agricultural UniversityHefei, China; Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China; The Northwest of Anhui Province Station for Integrative Agriculture, Research Institute for New Rural Development, Anhui Agricultural UniversityHefei, China.
authors.forename: Miao
authors.initials: M
authors.lastname: Li
authors.affiliation: School of Earth and Space Sciences, University of Science and Technology of ChinaHefei, China; Jiangsu Bio-Engineering Research Centre of Selenium, Suzhou Institute for Advanced Study, University of Science and Technology of ChinaSuzhou, China; Institute of Advanced Technology, University of Science and Technology of ChinaHefei, China.
authors.forename: Linxi
authors.initials: L
authors.lastname: Yuan
keywords: antioxidant defense system; cadmium; lead; oilseed rape (Brassica napus L.); oxidative stress; selenium