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Response of antioxidant enzymes to high NaCl concentration in different salt-tolerant plants

Author： Mallik S. Nayak M. Sahu B. Panigrahi A. Shaw B.

Publisher： Springer Publishing Company

ISSN： 0006-3134

Source： Biologia Plantarum, Vol.55, Iss.1, 2011-03, pp. : 191-195

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

The effects of NaCl on the H₂O₂ content and the activities of catalase (CAT) and superoxide dismutase (SOD) were studied in diverse group of plants, such as a unicellular alga, Chlorella sp., an aquatic macrophyte, Najas graminea, and a mangrove plant, Suaeda maritima, all showing high tolerance to NaCl. Significant accumulation of H₂O₂ was observed in all the tested plants upon their exposure to 255 mM NaCl. The activity of both CAT and SOD increased significantly in response to the NaCl treatment. Growing the plants in presence of 255 mM NaCl also resulted in the synthesis of new isoforms of both CAT and SOD.

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