Putrescine, spermidine and spermine contents and peroxidase activity (EC 1.11.1.7) were determined in plants of Phaseolus vulgaris L. cv Carioquinha submitted to saline stress (50 and 100 mM NaCl). Changes were observed in polyamine contents, mainly in putrescine. Increase in peroxidase activity also occurred with NaCl concentration, for both concentrations used. The results showed alterations in the polyamines contents and peroxidase activity in plants of Phaseolus vulgaris grown under salinity.
polyamines; peroxidase; beans; NaCl