Cd and Ni transport and accumulation in the halophyte Sesuvium portulacastrum: implication of organic acids in these processes
| Autor: | Chedly Abdelly, Mejda Mnasri, Stanley Lutts, Suzelle Barrington, Tahar Ghnaya, Rim Ghabriche, Kebba Sabally, Emna Fourati, Hanen Zaier |
|---|---|
| Přispěvatelé: | UCL - SST/ELI/ELIA - Agronomy |
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_element
Translocation translocation Plant Science phytoremediation lcsh:Plant culture Metal chemistry.chemical_compound Nutrient Halophytes Halophyte Organic acids Botany organic acids lcsh:SB1-1110 heavy metals Sesuvium portulacastrum Original Research Cadmium biology halophytes fungi Xylem food and beverages biology.organism_classification Phytoremediation chemistry Heavy metals visual_art halophyte Shoot transport visual_art.visual_art_medium Citric acid Nuclear chemistry |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Vol 6 (2015) Frontiers in Plant Science, Vol. 6, no. MAR (2015) |
| ISSN: | 1664-462X |
| Popis: | The implication of organic acids in Cd and Ni translocation was studied in the halophyte species Sesuvium portulacastrum. Citric, fumaric, malic, and ascorbic acids were separated and quantified by HPLC technique in shoots, roots and xylem saps of plants grown on nutrient solutions added with 50 μM Cd, 100 μM Ni and the combination of 50 μM Cd + 100 μM Ni. Results showed that Cd had no significant impact on biomass production while Ni and the combination of both metals drastically affected plant development. Cadmium and Ni concentrations in tissues and xylem sap were higher in plants subjected to individual metal application than those subjected to the combined effect of Cd and Ni suggesting a possible competition between these metals for absorption. Both metals applied separately or in combination induced an increase in citrate concentration in shoots and xylem sap but a decrease of this concentration in the roots. However, a minor relationship was observed between metal application and fumaric, malic, and ascorbic acids. Both observations suggest the implication of citric acid in Cd, Ni translocation and shoot accumulation in S. portulacastrum. The relatively high accumulation of citric acid in xylem sap and shoot of S. portulacastrum could be involved in metal chelation and thus contributes to heavy metal tolerance in this species. © 2015 Mnasri,Ghabriche,Fourati,Zaier,Sabally,Barrington,Lutts, AbdellyandGhnaya. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|