Bioremediation of Methylparathion by Free and Immobilized Cells of Bacillus sp . Isolated from Soil

Sreenivasulu, C.; Aparna, Y.

doi:10.1007/s001280096

Cited by 6 publications

(7 citation statements)

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“…Similar results of different investigations [18][19][20][21][22] are in agreement with our results as they isolated and identified Bacillus strains able to degrade malathion. Other earlier studies also support our results [23], for confirming the ability of Bacillus strains to degrade soil pollutants like malathion. It was also noted that strain Acinetobacter johnsonii MA19 was able to degrade malathion which agree with our results [24].…”

Section: Discussionsupporting

confidence: 92%

Isolation and identification of efficient Egyptian malathion‐degrading bacterial isolates

Hamouda

Marzouk

Abbassy

et al. 2013

J. Basic Microbiol.

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Bacterial isolates degrading malathion were isolated from the soil and agricultural waste water due to their ability to grow on minimal salt media amended with malathion as a sole carbon source. Efficiencies of native Egyptian bacterial malathion-degrading isolates were investigated and the study generated nine highly effective malathion-degrading bacterial strains among 40. Strains were identified by partial sequencing of 16S rDNA analysis. Comparative analysis of 16S rDNA sequences revealed that these bacteria are similar with the genus Acinetobacter and Bacillus spp. and RFLP based PCR of 16S rDNA gave four different RFLP patterns among strains with enzyme HinfI while with enzyme HaeI they gave two RFLP profiles. The degradation rate of malathion in liquid culture was estimated using gas chromatography. Bacterial strains could degrade more than 90% of the initial malathion concentration (1000 ppm) within 4 days.

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Section: Discussionsupporting

confidence: 92%

Isolation and identification of efficient Egyptian malathion‐degrading bacterial isolates

Hamouda

Marzouk

Abbassy

et al. 2013

J. Basic Microbiol.

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“…This strain was isolated from cloud water, the natural sources of aerolized micro-organisms being soils, vegetation and water surfaces (Bauer et al 2002) and was assigned by analysis of its 16S rRNA gene sequence to be a member of the genus Bacillus, whose main habitat is known to be soil. It is not surprising to find a strain belonging to this genus in such a study as many Bacillus have been reported to degrade a variety of environmental hazardous chemicals such as pesticides (Saxena et al 1987;Sreenivasulu and Aparna 2001;El Bestawy et al 2002;Lopez et al 2005) or hazardous chemicals such as 2,4,6-trinitrotoluene (TNT) (Kalafut et al 1998).…”

Section: Discussionmentioning

confidence: 99%

“…It is not surprising to find a strain belonging to this genus in such a study as many Bacillus have been reported to degrade a variety of environmental hazardous chemicals such as pesticides (Saxena et al. 1987; Sreenivasulu and Aparna 2001; El Bestawy et al. 2002; Lopez et al.…”

Section: Discussionmentioning

confidence: 99%

First isolation and characterization of a bacterial strain that biotransforms the herbicide mesotrione

Durand

Amato

Sancelme

et al. 2006

Lett Appl Microbiol

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Aim: The aim of this study was to find and characterize a fungal or bacterial strain capable of metabolizing mesotrione, a new selective herbicide for control of broad‐leaved weeds in maize. Methods and Results: This strain was isolated from cloud water and showed close phylogenetic relationship with strains belonging to the Bacillus genus, based on 16S rRNA gene alignment. Kinetics of mesotrione degradation were monitored by high‐performance liquid chromatography and in situ1H nuclear magnetic resonance spectroscopy at different concentrations. Mesotrione was completely biotransformed even at 5 mmol l−1 concentration. 2‐Amino‐4‐methylsulfonyl benzoic acid (AMBA) was identified as one of the metabolites, but was not the major one. Conclusions: This study reports the first rapid mesotrione biotransformation by a pure bacterial strain and the formation of several metabolites including AMBA. Significance and Impact of the Study: This bacterium isolated from cloud water is the first pure strain capable of rapidly degrading mesotrione.

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“…The result pointed out that immobilized bacterial cells could be reused for up to nine sequential complete degradation cycles without any decline in carbofuran-degrading ability [39]. Repeated application of remediation agent in the process of biodegradation is one of the benefits of the immobilized cells [24,40]. Hence, it was essential to find out how many times the immobilized cells produced in this study could be reused.…”

Section: Reusability Of Gellan Gum Beadsmentioning

confidence: 95%

Enhanced Carbofuran Degradation Using Immobilized and Free Cells of Enterobacter sp. Isolated from Soil

et al. 2020

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Extensive use of carbofuran insecticide harms the environment and human health. Carbofuran is an endocrine disruptor and has the highest acute toxicity to humans than all groups of carbamate pesticides used. Carbofuran is highly mobile in soil and soluble in water with a lengthy half-life (50 days). Therefore, it has the potential to contaminate groundwater and nearby water bodies after rainfall events. A bacterial strain BRC05 was isolated from agricultural soil characterized and presumptively identified as Enterobacter sp. The strain was immobilized using gellan gum as an entrapment material. The effect of different heavy metals and the ability of the immobilized cells to degrade carbofuran were compared with their free cell counterparts. The results showed a significant increase in the degradation of carbofuran by immobilized cells compared with freely suspended cells. Carbofuran was completely degraded within 9 h by immobilized cells at 50 mg/L, while it took 12 h for free cells to degrade carbofuran at the same concentration. Besides, the immobilized cells completely degraded carbofuran within 38 h at 100 mg/L. On the other hand, free cells degraded the compound in 68 h. The viability of the freely suspended cell and degradation efficiency was inhibited at a concentration greater than 100 mg/L. Whereas, the immobilized cells almost completely degraded carbofuran at 100 mg/L. At 250 mg/L concentration, the rate of degradation decreased significantly in free cells. The immobilized cells could also be reused for about nine cycles without losing their degradation activity. Hence, the gellan gum-immobilized cells of Enterobacter sp. could be potentially used in the bioremediation of carbofuran in contaminated soil.

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Bioremediation of Methylparathion by Free and Immobilized Cells of Bacillus sp . Isolated from Soil

Cited by 6 publications

References 0 publications

Isolation and identification of efficient Egyptian malathion‐degrading bacterial isolates

Isolation and identification of efficient Egyptian malathion‐degrading bacterial isolates

First isolation and characterization of a bacterial strain that biotransforms the herbicide mesotrione

Enhanced Carbofuran Degradation Using Immobilized and Free Cells of Enterobacter sp. Isolated from Soil

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