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2010•Acta Pratacultural ScienceRequires access

Physiological response of Sonchus brachyotus to salt stress.

Shi Li-ran, Niu Yu-lu, Mingzhe Li

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Abstract

Seedlings of Sonchus brachyotus were treated with NaCl at different concentrations(0,3,6,9,12 g/kg),the physiological response was observed,and the physiological indexes measured.With an increase in NaCl concentration,plasma membrane permeability and malondialdehyde(MDA) content increased.The activity of superoxide dismutase(SOD),guaiacol peroxidase(POD) and catalase(CAT),and the proline and soluble sugar contents also increased with NaCl stress intensification.Soluble protein contents increased under low NaCl concentrations but tended to slowly decline with an increase in NaCl concentration.In conclusion,S.branchyotus showed a great adaptability to salt stress.

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What this paper is about

Seedlings of Sonchus brachyotus were treated with NaCl at different concentrations(0,3,6,9,12 g/kg),the physiological response was observed,and the physiological indexes measured.With an increase in NaCl concentration,plasma membrane permeability and malondialdehyde(MDA) content increased.The activity of superoxide dismutase(SOD),guaiacol peroxidase(POD) and catalase(CAT),and the proline and soluble sugar contents also increased with NaCl stress intensification.Soluble protein contents increased under low NaCl concentrations but tended to slowly decline with an increase in NaCl concentration.In conclusion,S.branchyotus showed a great adaptability to salt stress.

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Available abstract

Seedlings of Sonchus brachyotus were treated with NaCl at different concentrations(0,3,6,9,12 g/kg),the physiological response was observed,and the physiological indexes measured.With an increase in NaCl concentration,plasma membrane permeability and malondialdehyde(MDA) content increased.The activity of superoxide dismutase(SOD),guaiacol peroxidase(POD) and catalase(CAT),and the proline and soluble sugar contents also increased with NaCl stress intensification.Soluble protein contents increased under low NaCl concentrations but tended to slowly decline with an increase in NaCl concentration.In conclusion,S.branchyotus showed a great adaptability to salt stress.

Key concepts: Malondialdehyde, Proline, Superoxide dismutase, Catalase, Chemistry, Sugar, Point of delivery, Membrane permeability

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