The effect of salt stress on polyamine biosynthesis and content in mung bean plants and in halophytes

The role of polyamines in the regulation of the plasma membrane and the tonoplast proton pumps under salt stress

“…Jimé nez- Bremont et al (2007) and Zapata et al (2004) observed accumulation of SPD and SPM, but not PUT, under salt stress. However, a decrease in PA levels under salinity was reported by Prakasch et al (1988), Friedman et al (1989) and Santa-Cruz et al (1997a, b). Ionic and osmotic components are two elements of salt stress.…”

“…There are no explicit data concerning the effect of salinity on biosynthesis of PAs. An increase in the concentration of PAs (PUT, SPD and SPM) was observed by Basu et al (1988), Basu and Ghosh (1991), Friedman et al (1989) and Kirshnamurthy and Bhagwat (1989) under salt stress conditions. Jimé nez- Bremont et al (2007) and Zapata et al (2004) observed accumulation of SPD and SPM, but not PUT, under salt stress.…”

Effect of salt and osmotic stress on changes in polyamine content and arginine decarboxylase activity in Lupinus luteus seedlings

“…In other studies, contradictory data have been reported with respect to polyamine accumulation as a response to salt stress. No effect was found in several species with different levels of salt tolerance (Priebe and Jager, 1978;Friedman et al, 1989). However, ADC, a key enzyme in the biosynthetic pathway of PAs which catalyses the synthesis of Put via agmatine and N-carbamoyl-Put (Tabor and Tabor, 1984), appears to be activated by salt and osmotic stress (Flores, 1991).…”

Polyamines in Helianthus annuus L. during Germination under Salt Stress

“…Although salinity and osmotic stress may affect polyamine metabolism in different manners (Erdei et al 1991, 1996, Reggiani et al 1994, Zhou et al 1995, no distinct separation between salt and osmotic stress could be made in some cases (Friedman et al 1989). The Put titer decreased in seedlings of Brassica campestris treated with 100 mM NaCl (Das et al 1995) but increased twofold in sensitive coleoptiles of rice cultivars (Basu and Ghosh 1991).…”

“…Polyamine accumulation and activation of both ADC and ODC were found in mung bean plants in response to salt stress (Friedman et al 1989) and also in cultured tobacco cells and leaves of several plants (Das et al 1995, Erdei et al 1996, Reggiani et al 1994. In all cases the increase in Put appears to originate from the ODC pathway (Kramer and Wang 1990) and/or from induction of ADC activity (Smith 1985).…”