Bioaccumulation Potential and Physiological Responses of Aquatic Macrophytes to Pb Pollution
- 10 September 2013
- journal article
- Published by Taylor & Francis Ltd in International Journal of Phytoremediation
- Vol. 16 (1), 29-45
- https://doi.org/10.1080/15226514.2012.751355
Abstract
In view of their potential bioaccumulation of heavy metals, Ceratophyllum demersum and Myriophyllum spicatum was studied under hydroponic cultures enriched by different Pb concentrations (25, 50, 75 mg/l) for 1-7 days. Both species exerted remarkable capabilities to concentrate Pb in their tissues as compared to control. The highest accumulation value of Pb (164.26 mg/g x dw) was recorded in C. demersum and the most of metal (91.72 mg/g dw) accumulated after 1 d. Significant reduction in photosynthetic pigments and appearance of morphological symptoms such as chlorosis and fragmentation of leaves were evident after 7d at 75 mg/l. The activity of POX and APX, carotenoids and proline showed induction at lower concentration and duration followed by decline. Major re-shuffle in protein patterns appeared as a tolerant mechanism, which both species developed under Pb toxicity. Results suggest that both species responded positively to Pb concentration and accumulated high amount of metal. Due to metal accumulation coupled with detoxification potential, both species appear to have potential for use as phytoremediators and the developed responses can be used as reliable biomarkers for Pb water pollution.Keywords
This publication has 45 references indexed in Scilit:
- Heavy metal biomonitoring and phytoremediation potentialities of aquatic macrophytes in River NileEnvironmental Monitoring and Assessment, 2011
- Myriophyllum spicatumandNajas marinaas Bioindicators of Trace Element Contamination in LakesJournal of Freshwater Ecology, 2010
- Copper toxicity in Withania somnifera: Growth and antioxidant enzymes responses of in vitro grown plantsEnvironmental and Experimental Botany, 2008
- The Culturing and Testing of Two Species of DuckweedPublished by ASTM International ,2008
- Changes in lipid profile during growth and senescence of Catharanthus roseus leafBrazilian Journal of Plant Physiology, 2006
- Induction of phytochelatins under cadmium stress in water lettuce (pistia stratiotesL.)Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, 1995
- Pentachlorophenol: Uptake/elimination kinetics and metabolism in an aquatic plant, Eichhornia CrassipesEnvironmental Toxicology and Chemistry, 1994
- Evaluation of peroxidase as a biochemical indicator of toxic chemical exposure in the aquatic plant Hydrilla Verticillata, RoyleEnvironmental Toxicology and Chemistry, 1994
- Lead-induced ultrastructural changes in chloroplasts of the hydrophyte, Ceratophyllum demersumZeitschrift für Pflanzenphysiologie, 1974
- Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4Nature, 1970