Exogenous Spermidine Induces Cadmium Stress Tolerance in Cucumber Seedlings by Promoting Plant Growth and Defense System.

ABSTRACT: This study aims to investigate the role of exogenous spermidine (Spd) in mitigating the adverse effects of cadmium (Cd) stress on the growth and development of cucumber (Cucumis sativus). The cucumber cultivar "Xintaimici" was used as the experimental material, and a hydroponic experiment was carried out. Based on a baseline Cd concentration of 10 mg·L^-1, Spd was supplemented at concentrations of 0.05, 0.1, 0.2, 0.4, and 0.5 mM, resulting in seven treatment groups: control group (CK), S0 group (Cd-only treatment, 10 mg·L^-1 Cd + 0 mM Spd), S1+ Cd group (10 mg·L^-1 Cd + 0.05 mM Spd), S2+ Cd group (10 mg·L^-1 Cd + 0.1 mM Spd), S3+ Cd group (10 mg·L^-1 Cd + 0.2 mM Spd), S4+ Cd group (10 mg·L^-1 Cd + 0.4 mM Spd), and S5+ Cd gr

SUBMITTER: Yu G 

PROVIDER: S-EPMC12567920 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature