Putrescine eases saline stress by regulating biochemicals, antioxidative enzymes, and osmolyte balance in hydroponic strawberries (cv. Albion)

Summary

Abstract Salinity is a significant abiotic stress factor that causes considerable damage to many plants through various mechanisms. In this study, the ameliorative effect of putrescine (100, 150, and 200 ppm) on salinity stress (1 g L−1 NaCl) was investigated in strawberry cv. Albion grown in hydroponic culture. Results showed that putrescine provided root development comparable to control under salt stress. Chlorophyll a and b levels were slightly enhanced by putrescine, while the Chlorophyll a/b ratio was significantly improved. The total phenolics, carbohydrates, anthocyanin, and protein were also raised by putrescine treatments under saline conditions. The antioxidant mechanism was also fortified by putrescine treatment, evidenced by the increased DPPH scavenging and the rise in the an