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BioMed Research International
Volume 2014, Article ID 392682, 6 pages
http://dx.doi.org/10.1155/2014/392682
Research Article

Biodegradation and Utilization of Organophosphorus Pesticide Malathion by Cyanobacteria

1Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt
2Agricultural Research Center, Ministry of Agriculture, Egypt

Received 20 February 2014; Accepted 3 April 2014; Published 17 April 2014

Academic Editor: José Carlos Tavares Carvalho

Copyright © 2014 Wael M. Ibrahim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Three strains of filamentous Cyanobacteria were used to study their growth and utilization of organophosphorus pesticide malathion. A sharp decrease in the growth of the algal strains was observed by increasing the concentration of malathion. Amongst them Nostoc muscorum tolerated different concentrations and was recorded as the highest efficient strain for biodegradation (91%) of this compound. Moreover, carbohydrate and protein content of their cells overtopped the other strains especially at higher concentrations. The algal strains were further subjected to grow under P-limitation in absence and presence of malathion. Although, the algal growth under P-limitation recorded a very poor level, a massive enhanced growth and phosphorous content of cells were obtained when the P-limited medium was amended with malathion. This study clarified that N. muscorum with its capability to utilize malathion as a sole phosphorous source is considered as an inexpensive and efficient biotechnology for remediation of organophosphorus pesticide from contaminated wastewater.