Physiological Responses and Tolerance of Halophyte Sesuvium portulacastrum L. to Cesium

Cesium (Cs) is a soil contaminant and toxic to the ecosystem, especially plant species. In this study, we have assessed potential of halophyte Sesuvium portulacastrum for its Cs tolerance accumulation. Thirty days old S. plants were subjected different concentrations (0, 5, 10, 25, 50, 150 mg·L−1 Cs) using cesium chloride. The biomass photosynthetic pigments not affected up 25 treatment while significant decline in pigment levels was observed at higher concentrations. treatments increased protein content low inhibitory. Under exposure, induction antioxidant enzymes such as ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), superoxide dismutase (SOD) observed. enzyme activities upregulated 50 but decreased significantly mg·L−1. accumulation dose tissue-dependent evidenced by leaves (536.10 μg·g−1) compared stem (413.74 roots (284.69 μg·g−1). results suggest that hyper-accumulator could be useful phytoremediation Cs-contaminated soils.