title: [Coercion and damage of Cu pollution on Artemisia lavandulaefolia growth].
abstract: By the method of solution culture, this paper studied the coercion and damage of Cu pollution on the growth of Artemisia lavandulaefolia. The Cu concentration was set as 2.5, 5, 10, 20 and 40 mg x L(-1), experimental duration was 14 days, and the growth and physiological indices of plants were tested. The results showed that the growth of A. lavandulaefolia was stimulated at low Cu concentration (2.5 mg x L(-1)), while inhibited at higher Cu concentrations (5 to approximately 40 mg x L(-1)). There was a significant negative correlation between each growth index and Cu concentration, and pigments contents had the similar trend. The sensibility of various photosynthetic pigments to Cu was in the order of chlorophyll a > chlorophyll a + b > chlorophyll b > carotenoid. Cell membrane permeability, O2 generation rate, and MDA content decreased slightly at 2.5 mg Cu x L(- 1) and then increased with increasing Cu concentration. The activities of POD, SOD and CAT increased first but decreased then with the increasing Cu concentration, and the endurance index of root showed the same trend, being > 0.5 at the Cu concentration less than 20 mg x L(-1) while decreased to 0.36 at 40 mg Cu x L(-1).
authors.affiliation: Provincial Key Laboratory of Conservation and Exploitation of Biological Resources, Biodiversity Research Center, Anhui Normal University, Wuhu 241000, China. zhenquan113@126.com
authors.forename: Quan
authors.initials: Q
authors.lastname: Zhen
authors.forename: Mi
authors.initials: M
authors.lastname: Yan
authors.forename: Hongfei
authors.initials: H
authors.lastname: Yang
authors.forename: Dengyi
authors.initials: D
authors.lastname: Liu
authors.forename: Youbao
authors.initials: Y
authors.lastname: Wang
mesh_terms: D019306:Artemisia / Q000187:drug effects* / Q000201:enzymology / Q000254:growth & development*; D002374:Catalase / Q000378:metabolism; D003300:Copper / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D010788:Photosynthesis / Q000187:drug effects*; D012989:Soil Pollutants / Q000633:toxicity*; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D012989:Soil Pollutants; D003300:Copper; D002374:Catalase; D013482:Superoxide Dismutase