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Biodegradation and utilization of organophosphorus pesticide malathion by Cyanobacteria.

Ibrahim WM, Karam MA, El-Shahat RM, Adway AA - Biomed Res Int (2014)

Bottom Line: A sharp decrease in the growth of the algal strains was observed by increasing the concentration 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.

View Article: PubMed Central - PubMed

Affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.

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.

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Related in: MedlinePlus

Effect of different concentrations of malathion on carbohydrate content of algal biomass. Data are the means of three replicates and error bars represent the standard errors of the means.
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fig5: Effect of different concentrations of malathion on carbohydrate content of algal biomass. Data are the means of three replicates and error bars represent the standard errors of the means.

Mentions: Data present in Figure 5 indicated that the treatment of A. oryzae and N. muscorum with different malathion concentrations caused a very high significant increase in total carbohydrate content with increasing concentrations of malathion and the highest carbohydrate content (0.39 and 1.09 mg/g dry weight, resp.) was recorded at 50 ppm of malathion. At the same time, carbohydrate content of S. platensis was increased until 20 ppm of malathion and then dramatically decreased as malathion concentration increased further.


Biodegradation and utilization of organophosphorus pesticide malathion by Cyanobacteria.

Ibrahim WM, Karam MA, El-Shahat RM, Adway AA - Biomed Res Int (2014)

Effect of different concentrations of malathion on carbohydrate content of algal biomass. Data are the means of three replicates and error bars represent the standard errors of the means.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4016846&req=5

fig5: Effect of different concentrations of malathion on carbohydrate content of algal biomass. Data are the means of three replicates and error bars represent the standard errors of the means.
Mentions: Data present in Figure 5 indicated that the treatment of A. oryzae and N. muscorum with different malathion concentrations caused a very high significant increase in total carbohydrate content with increasing concentrations of malathion and the highest carbohydrate content (0.39 and 1.09 mg/g dry weight, resp.) was recorded at 50 ppm of malathion. At the same time, carbohydrate content of S. platensis was increased until 20 ppm of malathion and then dramatically decreased as malathion concentration increased further.

Bottom Line: A sharp decrease in the growth of the algal strains was observed by increasing the concentration 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.

View Article: PubMed Central - PubMed

Affiliation: Botany Department, Faculty of Science, Fayoum University, Fayoum, Egypt.

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.

Show MeSH
Related in: MedlinePlus