Role of exogenous salicylic acid in alleviating cadmium-induced toxicity in Kentucky bluegrass |
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| Institution: | 1. Beijing Research and Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;2. Beijing Agricultural Vocation College, Beijing 102442, China;3. Lanzhou Institute of Animal and Husbandry Pharmaceutics Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China;1. Departamento de Biología, Universidad de Cádiz, Campus Río San Pedro, E-11510 Puerto Real, Cádiz, Spain;2. Centro de Investigaciones sobre Desertificación (CIDE-CSIC-UV-GV), C/ Carretera de Moncada-Náquera, Km. 4.5, E-46113 Moncada, Valencia, Spain;1. Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina B2, SK-842 15 Bratislava, Slovakia;2. Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University in Olomouc, Šlechtitelů 11, CZ-783 71 Olomouc, Czech Republic;1. Unit of Botany and Plant Physiology, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, Al. 29 Listopada 54, 31-425, Kraków, Poland;1. Zhejiang A & F University, Key Laboratory of Soil Contamination Bioremediation of Zhejiang Procince, Lin''an, Zhejiang, 311300, PR China;2. Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, 38000, Pakistan;1. Department of Biology, Faculty of Science, Karadeniz Technical University, 61080 Trabzon, Turkey;2. Biosystem Engineering, Faculty of Agriculture and Natural Sciences, Düzce University, 81620 Düzce, Turkey;3. Laboratory of Growth Regulators & Department of Chemical Biology and Genetics, Centre of the Region Hana for Biotechnological and Agricultural Research, Faculty of Science, Palacky University & Institute of Experimental Botany AS CR, Slechtitelu 11, CZ-783 71 Olomouc, Czech Republic;4. Universidad de Castilla-La Mancha, Instituto Regional de Investigación Científica Aplicada, Avda. Camilo José Cela S/N, 13071 Ciudad Real, Spain |
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| Abstract: | To understand the role of salicylic acid (SA) in alleviating cadmium (Cd) toxicity in Kentucky bluegrass (Poa pratensis L.), we investigated the changes of biochemical and physiological indexes in five-week-old Kentucky bluegrass seedlings exposed to 0, 5, 10 or 50 μM Cd with or without 500 μM SA for 7 d. Results showed that, compared to the Cd treatment applied alone, 500 μM SA pretreatment significantly decreased Cd accumulations and increased the chlorophyll level, growth and nutrient elements content (K, Ca, Mg and Fe) in plants, accompanying with the reduction in malondialdehyde and hydrogen peroxide contents. Furthermore, SA pretreatment enhanced remarkably the superoxide dismutase, ascorbate peroxidase and peroxidase activity in the Cd-stressed plants, but decreased catalase activity. Overall, SA might regulate the antioxidant defense activities, reduce Cd uptake and stimulate nutrient elements absorption in Cd-treated with Kentucky bluegrass, thereby improving its resistance to Cd stress. |
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| Keywords: | Salicylic acid Cadmium Mineral nutrients Oxidative stress |
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