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Sensitivity of Mediterranean woody seedlings to copper, nickel and zinc.
Chemosphere. 2007 Jan; 66(3):412-20.C

Abstract

The restoration of heavy metal contaminated areas requires information on the response of native plant species to these contaminants. The sensitivity of most Mediterranean woody species to heavy metals has not been established, and little is known about phytotoxic thresholds and environmental risks. We have evaluated the response of four plant species commonly used in ecological restoration, Pinus halepensis, Pistacia lentiscus, Juniperus oxycedrus, and Rhamnus alaternus, grown in nutrient solutions containing a range of copper, nickel and zinc concentrations. Seedlings of these species were exposed to 0.048, 1 and 4 microM of Cu; 0, 25 and 50 microM of Ni; and 0.073, 25 and 100 microM of Zn in a hydroponic silica sand culture for 12 weeks. For all four species, the heavy metal concentration increased in plants as the solution concentration increased and was always higher in roots than in shoots. Pinus halepensis and P. lentiscus showed a higher capacity to accumulate metals in roots than J. oxycedrus and R. alaternus, while the allocation to shoots was considerably higher in the latter two. Intermediate heavy-metal doses enhanced biomass accumulation, whereas the highest doses resulted in reductions in biomass. Decreases in shoot biomass occurred at internal concentrations ranging from 25 to 128 microg g-1 of Zn, and 1.7 to 4.1 microg g(-1) of Cu. Nickel phytoxicity could not be established within the range of doses used. Rhamnus alaternus and J. oxycedrus showed higher sensitivity to Cu and Zn than P. halepensis and, especially, P. lentiscus. Contrasted responses to heavy metals must be taken into account when using Mediterranean woody species for the restoration of heavy metal contaminated sites.

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Authors+Show Affiliations

Fuentes D
Fundación CEAM (Centro de Estudios Ambientales del Mediterráneo), Universidad de Alicante, Facultad de Ciencias, Fase V. Ctra, San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain. david.fuentes@ua.es
Disante KB
No affiliation info available
Valdecantos A
No affiliation info available
Cortina J
No affiliation info available
Vallejo VR
No affiliation info available

MeSH

AnacardiaceaeBiodegradation, EnvironmentalBiomassCopperCupressaceaeEnvironmental MonitoringMetals, HeavyNickelPinusPlant RootsPlant ShootsRhamnusSeedlingsSoil PollutantsZinc

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16870229

Citation

Fuentes, David, et al. "Sensitivity of Mediterranean Woody Seedlings to Copper, Nickel and Zinc." Chemosphere, vol. 66, no. 3, 2007, pp. 412-20.
Fuentes D, Disante KB, Valdecantos A, et al. Sensitivity of Mediterranean woody seedlings to copper, nickel and zinc. Chemosphere. 2007;66(3):412-20.
Fuentes, D., Disante, K. B., Valdecantos, A., Cortina, J., & Vallejo, V. R. (2007). Sensitivity of Mediterranean woody seedlings to copper, nickel and zinc. Chemosphere, 66(3), 412-20.
Fuentes D, et al. Sensitivity of Mediterranean Woody Seedlings to Copper, Nickel and Zinc. Chemosphere. 2007;66(3):412-20. PubMed PMID: 16870229.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sensitivity of Mediterranean woody seedlings to copper, nickel and zinc. AU - Fuentes,David, AU - Disante,Karen B, AU - Valdecantos,Alejandro, AU - Cortina,Jordi, AU - Vallejo,V Ramón, Y1 - 2006/07/25/ PY - 2006/02/09/received PY - 2006/05/29/revised PY - 2006/06/12/accepted PY - 2006/7/28/pubmed PY - 2007/4/3/medline PY - 2006/7/28/entrez SP - 412 EP - 20 JF - Chemosphere JO - Chemosphere VL - 66 IS - 3 N2 - The restoration of heavy metal contaminated areas requires information on the response of native plant species to these contaminants. The sensitivity of most Mediterranean woody species to heavy metals has not been established, and little is known about phytotoxic thresholds and environmental risks. We have evaluated the response of four plant species commonly used in ecological restoration, Pinus halepensis, Pistacia lentiscus, Juniperus oxycedrus, and Rhamnus alaternus, grown in nutrient solutions containing a range of copper, nickel and zinc concentrations. Seedlings of these species were exposed to 0.048, 1 and 4 microM of Cu; 0, 25 and 50 microM of Ni; and 0.073, 25 and 100 microM of Zn in a hydroponic silica sand culture for 12 weeks. For all four species, the heavy metal concentration increased in plants as the solution concentration increased and was always higher in roots than in shoots. Pinus halepensis and P. lentiscus showed a higher capacity to accumulate metals in roots than J. oxycedrus and R. alaternus, while the allocation to shoots was considerably higher in the latter two. Intermediate heavy-metal doses enhanced biomass accumulation, whereas the highest doses resulted in reductions in biomass. Decreases in shoot biomass occurred at internal concentrations ranging from 25 to 128 microg g-1 of Zn, and 1.7 to 4.1 microg g(-1) of Cu. Nickel phytoxicity could not be established within the range of doses used. Rhamnus alaternus and J. oxycedrus showed higher sensitivity to Cu and Zn than P. halepensis and, especially, P. lentiscus. Contrasted responses to heavy metals must be taken into account when using Mediterranean woody species for the restoration of heavy metal contaminated sites. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16870229/Sensitivity_of_Mediterranean_woody_seedlings_to_copper_nickel_and_zinc_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(06)00768-5 DB - PRIME DP - Unbound Medicine ER -