CHANGES IN ENDOGENOUS POLYAMINES an‎d PROTEINFRACTIONS IN SALT STRESSED WHEAT PLANT BY PUTRESCINE o‎r SPERMINE TREATMENTS

A pot experiment was carried out to study the effect of polyamines pretreatments, putrescine (4&8 mM) or spermine ( 6 & 10 mM), on the content of endogenous polyamines and protein fractions in wheat plants grown under salinity stress ( 0.0, 8000 and 10000 ppm NaCl). NaCl stress produced new protein bands, with molecular masses (mM) of 80, 40 and 16 KD. Also new bands appears in plants grown under putrescine or spermine treatments. The common new bands which appeared with polyamines application were Mm 80, 45, 40, 24, 16 and 14 KD, compared to their control. Content of putrescine decreased gradually with increasing NaCl level in irrigation water while, spermine and spermidine contents were generally increased under salinity stress.