title: Joint stress of chlorimuron-ethyl and cadmium on wheat Triticum aestivum at biochemical levels.
abstract: Biochemical responses to joint stress of chlorimuron-ethyl and cadmium (Cd) in wheat Triticum aestivum were examined. The joint action of chlorimuron-ethyl and Cd weakened the inhibition of Cd or chlorimuron-ethyl on the formation of chlorophyll. It was deduced that wheat plants had the capability to protect themselves by increasing the activity of the antioxidant enzyme peroxidase (POD) with the exposure time. The joint effect of chlorimuron-ethyl and Cd on the superoxide dismutase (SOD) activity in leaves was additive, while the joint effect on the SOD activity in roots was determined by the interaction of chlorimuron-ethyl and Cd in wheat. It was also concluded that the change of malondialdehyde (MDA) content in wheat might not be a good biomarker in the oxidative damage by chlorimuron-ethyl, while a decrease in the soluble protein content and POD activity in roots could be considered as a biomarker in the damage of wheat by chlorimuron-ethyl and Cd.
authors.affiliation: Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China.
authors.forename: Mei-E
authors.initials: ME
authors.lastname: Wang
authors.forename: Qi-Xing
authors.initials: QX
authors.lastname: Zhou
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000378:metabolism; D002104:Cadmium / Q000633:toxicity*; D002734:Chlorophyll / Q000032:analysis / Q000378:metabolism; D004785:Environmental Pollutants / Q000633:toxicity*; D015227:Lipid Peroxidation / Q000187:drug effects; D008315:Malondialdehyde / Q000032:analysis / Q000378:metabolism; D009195:Peroxidase / Q000032:analysis / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D010940:Plant Proteins / Q000032:analysis / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism; D011743:Pyrimidines / Q000633:toxicity*; D013453:Sulfonylurea Compounds / Q000633:toxicity*; D013482:Superoxide Dismutase / Q000032:analysis / Q000378:metabolism; D018675:Toxicity Tests; D014908:Triticum / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D004785:Environmental Pollutants; D010940:Plant Proteins; D011743:Pyrimidines; D013453:Sulfonylurea Compounds; D002104:Cadmium; D002734:Chlorophyll; D008315:Malondialdehyde; C112343:chlorimuron ethyl; C121048:guaiacol peroxidase; D009195:Peroxidase; D013482:Superoxide Dismutase