title: Combined effects of cadmium and fluoranthene on germination, growth and photosynthesis of soybean seedlings.
abstract: The single and combinational effects of cadmium (Cd) and fluoranthene (FLT) on germination, growth and photosynthesis of soybean seedlings were investigated. Exposure to 5, 10, or 15 mg Cd/L or 1, 5, or 10 mg FLT/L individually or in combination significantly decreased germination vigor (3 days) and final germination rate of soybean seeds, except at 1 and 5 mg FLT/L. The results of two-way ANOVA analysis and the Bliss independence model showed that at lower concentrations of FLT (1 mg/L), the interaction between Cd and FLT on germination was antagonistic, whereas the interaction was synergistic when the concentration of FLT was 5 or 10 mg/L and the concentration of Cd was 15 mg/L. Growth, expressed as dry weight, length of shoot and root, leaf area, and photosynthesis, expressed as net photosynthetic rate, intercellular CO2 concentration, chlorophyll contents and fluorescence of soybean seedlings were also reduced by exposure to 5 or 10 mg Cd/L or 1 or 5 mg FLT/L, singly or jointly. Significant antagonistic effects of exposure to 5 or 10 mg Cd/L or 1 or 5 mg FLT/L on shoot growth and photosynthesis were observed, whereas synergy and antagonism of Cd and FLT were both observed for root growth.
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. qiushuang.li@gmail.com
authors: Qiushuang
authors: Q
authors: Li
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Yonglong
authors: Y
authors: Lu
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Yajuan
authors: Y
authors: Shi
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Tieyu
authors: T
authors: Wang
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Kun
authors: K
authors: Ni
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Li
authors: L
authors: Xu
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Shijie
authors: S
authors: Liu
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Lin
authors: L
authors: Wang
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors: Qinli
authors: Q
authors: Xiong
authors: Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Canada.
authors: John P
authors: JP
authors: Giesy
mesh_terms: D002104:Cadmium / Q000494:pharmacology*; D002734:Chlorophyll / Q000378:metabolism; D005449:Fluorenes / Q000494:pharmacology*; D005453:Fluorescence; D018525:Germination / Q000187:drug effects*; D010788:Photosynthesis / Q000187:drug effects*; D013025:Glycine max / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism
chemical_list: D005449:Fluorenes; D002104:Cadmium; D002734:Chlorophyll; C007738:fluoranthene