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Cadmium stress alters the redox reaction and hormone balance in oilseed rape (Brassica napus L.) leaves.
Environ Sci Pollut Res Int. 2016 Feb; 23(4):3758-69.ES

Abstract

In order to understand the physiological response of oilseed rape (Brassica napus L.) leaves to cadmium (Cd) stress and exploit the physiological mechanisms involved in Cd tolerance, macro-mineral and chlorophyll concentrations, reactive oxygen species (ROS) accumulation, activities of enzymatic antioxidants, nonenzymatic compounds metabolism, endogenous hormonal changes, and balance in leaves of oilseed rape exposed to 0, 100, or 200 μM CdSO4 were investigated. The results showed that under Cd exposure, Cd concentrations in the leaves continually increased while macro-minerals and chlorophyll concentrations decreased significantly. Meanwhile, with increased Cd stress, superoxide anion (O2(• -)) production rate and hydrogen peroxide (H2O2) concentrations in the leaves increased significantly, which caused malondialdehyde (MDA) accumulation and oxidative stress. For scavenging excess accumulated ROS and alleviating oxidative injury in the leaves, the activity of enzymatic antioxidants, such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), was increased significantly at certain stress levels. However, with increased Cd stress, the antioxidant enzyme activities all showed a trend towards reduction. The nonenzymatic antioxidative compounds, such as proline and total soluble sugars, accumulated continuously with increased Cd stress to play a long-term role in scavenging ROS. In addition, ABA levels also increased continuously with Cd stress while ZR decreased and the ABA/ZR ratio increased, which might also be providing a protective role against Cd toxicity.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Yan H
Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology of Jiangxi Province, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, People's Republic of China.
Filardo F
Queensland Department of Agriculture and Fisheries, Ecosciences Precinct, Brisbane, QLD, 4001, Australia.
Hu X
Key Lab of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Shaanxi, 712100, People's Republic of China.
Zhao X
Key Laboratory of Poyang Lake Basin Agricultural Resources and Ecology of Jiangxi Province, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, People's Republic of China.
Fu D
Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Agronomy College, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, People's Republic of China. fudhui@163.com.

MeSH

AntioxidantsBrassica napusCadmiumCatalaseChlorophyllHydrogen PeroxideMalondialdehydeOxidation-ReductionOxidative StressPeroxidasePeroxidasesPlant Growth RegulatorsPlant LeavesPlant RootsReactive Oxygen SpeciesSeedsSoil PollutantsSuperoxide Dismutase

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26498815

Citation

Yan, Hui, et al. "Cadmium Stress Alters the Redox Reaction and Hormone Balance in Oilseed Rape (Brassica Napus L.) Leaves." Environmental Science and Pollution Research International, vol. 23, no. 4, 2016, pp. 3758-69.
Yan H, Filardo F, Hu X, et al. Cadmium stress alters the redox reaction and hormone balance in oilseed rape (Brassica napus L.) leaves. Environ Sci Pollut Res Int. 2016;23(4):3758-69.
Yan, H., Filardo, F., Hu, X., Zhao, X., & Fu, D. (2016). Cadmium stress alters the redox reaction and hormone balance in oilseed rape (Brassica napus L.) leaves. Environmental Science and Pollution Research International, 23(4), 3758-69. https://doi.org/10.1007/s11356-015-5640-y
Yan H, et al. Cadmium Stress Alters the Redox Reaction and Hormone Balance in Oilseed Rape (Brassica Napus L.) Leaves. Environ Sci Pollut Res Int. 2016;23(4):3758-69. PubMed PMID: 26498815.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium stress alters the redox reaction and hormone balance in oilseed rape (Brassica napus L.) leaves. AU - Yan,Hui, AU - Filardo,Fiona, AU - Hu,Xiaotao, AU - Zhao,Xiaomin, AU - Fu,DongHui, Y1 - 2015/10/24/ PY - 2015/07/30/received PY - 2015/10/18/accepted PY - 2015/10/27/entrez PY - 2015/10/27/pubmed PY - 2016/10/12/medline KW - Brassica napus L KW - Cadmium stress KW - Endogenous hormones KW - Enzymatic and nonenzymatic antioxidants KW - ROS KW - Tolerance SP - 3758 EP - 69 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 4 N2 - In order to understand the physiological response of oilseed rape (Brassica napus L.) leaves to cadmium (Cd) stress and exploit the physiological mechanisms involved in Cd tolerance, macro-mineral and chlorophyll concentrations, reactive oxygen species (ROS) accumulation, activities of enzymatic antioxidants, nonenzymatic compounds metabolism, endogenous hormonal changes, and balance in leaves of oilseed rape exposed to 0, 100, or 200 μM CdSO4 were investigated. The results showed that under Cd exposure, Cd concentrations in the leaves continually increased while macro-minerals and chlorophyll concentrations decreased significantly. Meanwhile, with increased Cd stress, superoxide anion (O2(• -)) production rate and hydrogen peroxide (H2O2) concentrations in the leaves increased significantly, which caused malondialdehyde (MDA) accumulation and oxidative stress. For scavenging excess accumulated ROS and alleviating oxidative injury in the leaves, the activity of enzymatic antioxidants, such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), was increased significantly at certain stress levels. However, with increased Cd stress, the antioxidant enzyme activities all showed a trend towards reduction. The nonenzymatic antioxidative compounds, such as proline and total soluble sugars, accumulated continuously with increased Cd stress to play a long-term role in scavenging ROS. In addition, ABA levels also increased continuously with Cd stress while ZR decreased and the ABA/ZR ratio increased, which might also be providing a protective role against Cd toxicity. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26498815/Cadmium_stress_alters_the_redox_reaction_and_hormone_balance_in_oilseed_rape__Brassica_napus_L___leaves_ DB - PRIME DP - Unbound Medicine ER -