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Toxicity and removal of heavy metals (cadmium, copper, and zinc) by Lemna gibba.
Ecotoxicol Environ Saf. 2009 Sep; 72(6):1774-80.EE

Abstract

Effects of cadmium, copper, and zinc on the aquatic plant Lemna gibba were determined under controlled conditions; in parallel their removal from the growth medium was followed. The results showed that the three heavy metals affected growth, a physiological stress index defined as the ratio of Chlorophyll to phaeophytin (D665/D665a), and the contents of proline. After 4 days, 10(-3)-10(-1)mg/L Cd inhibited growth by 25-100%, reduced D665/D665a by 35-89%, and increased proline content by 44-567%. Under the same conditions, 10(-4)-10(-1) microg/L Cu inhibited growth by 36-75%, reduced D665/D665a by 19-81%, and increased proline content by 67-288%. Comparable concentrations of Zn had little effect. However, higher concentrations (4, 30, and 50mg/L) inhibited growth by 50-79%. Also, 0.1 and 30 mg/L induced a small reduction of D665/D665a (-3.8% and -22%) and an increase in proline contents (+144% and +177%). When it was observed, proline accumulation was always transient and the maximum was reached after 4 days. Monitoring metal concentration in the medium showed that L. gibba was able to remove metals from the medium. Zn and Cu removal was biphasic, it was rapid during the first 2 days (> 60% reduction) and slow (10-20%) during the following 8 days. For Cd, removal was linear and depended on the initial concentration. It reached approximately 90% after 6 or 8 days for initial concentrations of 10(-1) and 10(-3)mg/L, respectively.

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Authors+Show Affiliations

Megateli S
Laboratoire d'amélioration des plantes, département des Sciences Agronomiques, Université Saad Dahlab, BP 270, route de Soumaa, Blida 09000, Algérie. megatlismail@yahoo.fr
Semsari S
No affiliation info available
Couderchet M
No affiliation info available

MeSH

AraceaeBiodegradation, EnvironmentalBiomarkersCadmiumChlorophyllCopperFresh WaterMetals, HeavyProlineStress, PhysiologicalWater Pollutants, ChemicalZinc

Pub Type(s)

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

Language

eng

PubMed ID

19505721

Citation

Megateli, Smain, et al. "Toxicity and Removal of Heavy Metals (cadmium, Copper, and Zinc) By Lemna Gibba." Ecotoxicology and Environmental Safety, vol. 72, no. 6, 2009, pp. 1774-80.
Megateli S, Semsari S, Couderchet M. Toxicity and removal of heavy metals (cadmium, copper, and zinc) by Lemna gibba. Ecotoxicol Environ Saf. 2009;72(6):1774-80.
Megateli, S., Semsari, S., & Couderchet, M. (2009). Toxicity and removal of heavy metals (cadmium, copper, and zinc) by Lemna gibba. Ecotoxicology and Environmental Safety, 72(6), 1774-80. https://doi.org/10.1016/j.ecoenv.2009.05.004
Megateli S, Semsari S, Couderchet M. Toxicity and Removal of Heavy Metals (cadmium, Copper, and Zinc) By Lemna Gibba. Ecotoxicol Environ Saf. 2009;72(6):1774-80. PubMed PMID: 19505721.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Toxicity and removal of heavy metals (cadmium, copper, and zinc) by Lemna gibba. AU - Megateli,Smain, AU - Semsari,Saida, AU - Couderchet,Michel, Y1 - 2009/06/07/ PY - 2009/01/08/received PY - 2009/04/25/revised PY - 2009/05/02/accepted PY - 2009/6/10/entrez PY - 2009/6/10/pubmed PY - 2009/10/1/medline SP - 1774 EP - 80 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 72 IS - 6 N2 - Effects of cadmium, copper, and zinc on the aquatic plant Lemna gibba were determined under controlled conditions; in parallel their removal from the growth medium was followed. The results showed that the three heavy metals affected growth, a physiological stress index defined as the ratio of Chlorophyll to phaeophytin (D665/D665a), and the contents of proline. After 4 days, 10(-3)-10(-1)mg/L Cd inhibited growth by 25-100%, reduced D665/D665a by 35-89%, and increased proline content by 44-567%. Under the same conditions, 10(-4)-10(-1) microg/L Cu inhibited growth by 36-75%, reduced D665/D665a by 19-81%, and increased proline content by 67-288%. Comparable concentrations of Zn had little effect. However, higher concentrations (4, 30, and 50mg/L) inhibited growth by 50-79%. Also, 0.1 and 30 mg/L induced a small reduction of D665/D665a (-3.8% and -22%) and an increase in proline contents (+144% and +177%). When it was observed, proline accumulation was always transient and the maximum was reached after 4 days. Monitoring metal concentration in the medium showed that L. gibba was able to remove metals from the medium. Zn and Cu removal was biphasic, it was rapid during the first 2 days (> 60% reduction) and slow (10-20%) during the following 8 days. For Cd, removal was linear and depended on the initial concentration. It reached approximately 90% after 6 or 8 days for initial concentrations of 10(-1) and 10(-3)mg/L, respectively. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/19505721/Toxicity_and_removal_of_heavy_metals__cadmium_copper_and_zinc__by_Lemna_gibba_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(09)00104-3 DB - PRIME DP - Unbound Medicine ER -