Nucleotide sequences and corresponding polypeptides conferring modulated growth rate and biomass in plants grown in saline and oxidative conditions

A method of producing a plant having increased tolerance to salinity or increased tolerance to oxidative stress, said method comprising growing plant cells transformed with an exogenous nucleic acid, said exogenous nucleic acid comprising a heterologous promoter operably linked to a nucleotide sequence encoding a polypeptide wherein said polypeptide has 95 percent or greater amino acid sequence identity to the amino acid sequence of SEQ ID NO:141 or SEQ ID NO:143, and wherein overexpression of said polypeptide in a transgenic plant grown from said transformed plant cells results in an increased level of tolerance to salinity or oxidative stress as compared to the corresponding level in tolerance to salinity or oxidative stress of a control plant of the same species cultivated under the same conditions that does not comprise said exogenous nucleic acid.