Antioxidative responses of Elodea nuttallii (Planch.) H. St. John to short-term iron exposure |
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| Authors: | Wei Xing Dunhai Li Guihua Liu |
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| Affiliation: | 1. Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, The Chinese Academy of Sciences, Wuhan 430074, China;2. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072, China;1. Department of Plant Biology, Federal University of Viçosa, Viçosa, Minas Gerais (MG) 36570-000, Brazil;2. Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais (MG), 36570-000, Brazil;1. Department of Plant Physiology and Molecular Plant Biology, Eötvös University, Pázmány P. Lane 1/C, Budapest H-1117, Hungary;2. Department of Plant Nutrition, Aula Dei Experimental Station (CSIC), P.O. Box 13034, E-50080 Zaragoza, Spain;3. Department of Agricultural Botany and Crop Physiology, Institute of Crop Sciences, Centre for Agricultural and Applied Economic Sciences, University of Debrecen, Böszörményi Street 138, Debrecen H-4032, Hungary;1. Grupo de Genética e Genômica da Conservação – Agência Paulista de Tecnologia dos Agronegócios, Pólo Centro Sul, CP 28, Rodovia SP 127, km 30, 13400-970 Piracicaba, São Paulo, Brazil;2. Programa de Pós-graduação em Genética e Biologia Molecular, Universidade Estadual de Campinas, CP 6109, Rua Bertrand Russel, 13083-970 Campinas, São Paulo, Brazil;3. Programa de Pós-graduação em Biologia Vegetal, Universidade Estadual de Campinas, CP 6109, Rua Bertrand Russel, 13083-970 Campinas, Sao Paulo, Brazil;4. Departamento de Genética, Universidade de São Paulo (USP), Av. P adua Dias 11, 13418-900 Piracicaba, Sao Paulo, Brazil;5. Departamento de Ciências Florestais, Universidade de São Paulo (USP), Av. Padua Dias 11, 13418-900 Piracicaba, São Paulo, Brazil;1. Faculty of Electronic Engineering, Menoufia University, Egypt;2. College of Computers and Information Technology, Taif University, Saudi Arabia;1. Alterra, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, The Netherlands;2. Department of Environmental Chemistry, Institute of Chemical Technology, Prague, Technicka 5, 166 28 Praha 6, Czech Republic |
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| Abstract: | Antioxidative responses of Elodea nuttallii (Planch.) H. St. John to short-term iron exposure were investigated in the study. Results showed that iron accumulation in E. nuttallii was concentration dependent. Growth of E. nuttallii was promoted by low iron concentration (1–10 mg L?1 [Fe3+]), but growth inhibition was observed when iron concentration beyond 10 mg L?1. The synthesis of protein and pigments increased within 1–10 mg L?1 [Fe3+] range. The activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) and glutathione-S-transferase (GST) were up to maximal values at 10 mg L?1 [Fe3+]. High iron concentration inhibited the synthesis of protein and pigments as well as activities of antioxidative enzymes, and accelerated degradation of pigment and production of ROS. Low iron concentration had no significant influences on PSII maximal quantum yield, activity of PSII and relative electron transport rate though PSII. Malondialdehyde (MDA) and proline concentrations were highest at 100 and 1 mg L?1 [Fe3+], respectively. |
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