Abstract

The response of wheat seedlings germinated under salinity stress to exogenous abscisic acid was discussed. Exogenous ABA acid induces two characteristic proteins of high molecular weights (109.4 and 84.0 kDa) in addition to the new protein set formed under high salinity levels. ABA, also induces synthesized forms of guaiacol peroxidase in seedlings treated with 200 mM NaCl. The induction and/or accumulation of peroxidase isoforms in ABA-treated seedlings, may reduce the active oxygen produced by salinity. The changes in gene expression and peroxidase isoforms may be selected to adaptation of wheat seedlings to NaCl-salinity.

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