Removal and accumulation of cadmium and lead by Typha latifolia exposed to single and mixed metal solutions.
We investigated the effect of Cd and Pb on the growth of the aquatic macrophyte Typha latifolia; the removal from the solution and the accumulation of these elements by the plant were also studied. Thus, small plants of T. latifolia, collected from a noncontaminated site, were exposed for 10 days to Cd and Pb, in a single solution or in mixture solutions, at two concentrations of the metals (5 and 7.5 mg/L). Our results showed that T. latifolia removed effectively Cd and Pb from solutions and was able to accumulate these metals in the roots and, to a lesser extent, in the leaves. Our findings suggested a synergistic effect of Cd and Pb with respect to the toxicity to T. latifolia. Additionally, Cd diminished the Pb absorption by T. latifolia. Our results confirmed, using scanning electron microscopy, the internalization of Cd and Pb in T. latifolia.
Alonso-Castro
Angel Josabad
AJ
Plant Biochemistry Laboratory, Centro de Investigación y Estudios de Posgrado, Facultad de Ciencias Químicas de la Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava # 6, Zona Universitaria, 78200, San Luis Potosí, SLP, Mexico.
Carranza-Alvarez
Candy
C
Alfaro-De la Torre
Ma Catalina
MC
Chávez-Guerrero
Leonardo
L
García-De la Cruz
Ramón Fernando
RF
D000042:Absorption; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000032:analysis* / Q000493:pharmacokinetics / Q000633:toxicity; D007854:Lead / Q000032:analysis* / Q000493:pharmacokinetics / Q000633:toxicity; D008855:Microscopy, Electron, Scanning; D018515:Plant Leaves / Q000254:growth & development / Q000648:ultrastructure; D018517:Plant Roots / Q000254:growth & development / Q000648:ultrastructure; D012996:Solutions; D013054:Spectrophotometry, Atomic; D032401:Typhaceae / Q000254:growth & development* / Q000648:ultrastructure; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics / Q000633:toxicity
D012996:Solutions; D014874:Water Pollutants, Chemical; D002104:Cadmium; D007854:Lead