Antioxidant defense system in <Emphasis Type="Italic">Phragmites communis</Emphasis> Trin. ecotypes |
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| Authors: | K-M Chen H-J Gong S-M Wang C-L Zhang |
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| Institution: | (1) College of Agriculture and Biotechnology, Zhejiang University, Zhejiang, 310029, P.R. China;(2) College of Life Sciences, Lanzhou University, Lanzhou, 730000, P.R. China |
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| Abstract: | The antioxidant defense system in three ecotypes of reed (Phragmites communis Trin.), swamp reed (SR), dune reed (DR), and heavy salt meadow reed (HSMR), from northwest China were investigated. The HSMR
possessed the highest ratio of ascorbate (ASC)/dehydroascorbate (DHA) and activities of superoxide dismutase (SOD) and catalase
among the three reed ecotypes, whereas, the DR exhibited the highest ratio of glutathione/glutathione disulfide and activities
of ASC peroxidase (APX) and DHA reductase. Malondialdehyde and hydrogen peroxide contents were highest in HSMR, intermediate
in SR, and lowest in DR. In addition, different isoenzymes of glutathion reductase, APX, SOD and DHA were also observed in
three reed ecotypes. |
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| Keywords: | antioxidative enzymes ascorbate drought-prone and saline habitats glutathione reed |
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