Akademik Veri Yönetim Sistemi
International Journal of Phytoremediation, 2026 (SCI-Expanded, Scopus)
Cadmium (Cd) contamination of freshwater systems remains a persistent environmental concern due to its high toxicity, non-essential nature, and long-term persistence. Sustainable and cost-effective remediation approaches are therefore required to mitigate Cd-associated ecological and health risks. In this study, Cd accumulation, ionomic responses, and genomic stability of clonal Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine cultivated under controlled hydroponic conditions were evaluated following exposure to graded CdCl2 concentrations (10, 25, 50, 100, and 200 μM). Leaf Cd increased markedly from 0.109 mg kg−1 (control) to 12.340 mg kg−1 (200 µM), indicating sustained uptake across the exposure gradient. In parallel, Cd stress caused broad ionomic depletion: at 200 µM, Zn, Cu, and B declined by 69.06, 62.60, and 61.69% relative to the control, respectively, while Na showed the smallest reduction (18.95%). Pearson correlation analysis confirmed significant negative associations between Cd and all measured nutrients (r = −0.838 to −0.938; p < 0.01), supporting Cd-driven disruption of elemental homeostasis. Leaf bioconcentration factor (BCF) values remained below unity across Cd treatments (0.63, 0.61, 0.46, 0.42, and 0.34 for 10–200 µM, respectively), whereas the bioaccumulation index (BAI) increased markedly with dose (9.58, 24.79, 37.98, 68.26, and 112.21 for 10–200 µM), indicating sustained uptake without a hyperaccumulation profile. ISSR profiling (UBC 808) showed no band gain/loss across treatments, and genomic template stability remained at 100%, indicating no detectable genotoxicity at the level of band polymorphism; however, treatment-related band intensity changes suggested stress-responsive molecular adjustment, although intensity-based interpretations were treated as supportive rather than definitive. Overall, L. laevigatum displayed a tolerance-oriented Cd uptake pattern rather than hyperaccumulation, maintaining genomic integrity despite substantial ionomic shifts, and may serve as a supportive species for phytoremediation frameworks emphasizing tolerance and phytofiltration in freshwater systems.