Impact of cadmium ions on some antioxidant compounds and their biosynthetic enzymes in Spergularia marina

Document Type : Original Article

Authors

Botany Department, Faculty of Science, Mansoura University, Egypt

Abstract

Heavy metals accumulation in plants triggers oxidative stress. Priming Spergularia marina L seeds in cadmium chloride (CdCl₂) solution for varying time periods resulted in increased amino acid, proline content as an antioxidant compared to the control. The activities of pyrroline-5-carboxylate synthetase (P5CS) and pyrroline-5-carboxylate reductase (P5CR), two enzymes involved in proline biosynthesis, were enhanced in response to cadmium exposure. Additionally, anthocyanin content, another antioxidant agent, was elevated in seeds primed with CdCl₂. This rise in anthocyanin dye may play a key role in reducing cadmium toxicity by scavenging free radicals or sequestering Cd²⁺ ions in vacuoles. The activity of anthocyanin dye synthase increased after priming the seeds with the seaweeds.

Keywords

Mansoura Journal of Biology
Volume 72, Issue 1
March 2025
Pages 1-5

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