Degradation of Dimethoate by Cellulolytic Bacteria in Cotton Soils

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Ravuri Jayamadhuri
Ravuri Jayamadhuri

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Degradation of Dimethoate by Cellulolytic Bacteria in Cotton Soils

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Abstract

The present experience has been aimed to isolate bacteria specifically cellulolytic bacteria, normally found in cotton soils and determine their role in degradation of the specific pesticide. Two cellulolytic bacterial isolates k1 & k2 identified as Pseudomonas putida and Bacillus pumulus were capable of growing on dimethoate supplemented medium. P.putida exhibited maximum growth of 4.1x 106 cfu/ ml at 0.09 mg/ml while B.pumulus showed significant growth of 2.2 x107 cfu/ml at 0.06mg/ml of dimethoate after 72hrs of incubation at room temperature. Rate of utilization of dimethoate increased progressively with increase in the concentration of yeast extract added to the medium up to 0.56% in P.putida and 0.7% in B.pumulus. The present findings indicate that among the two bacterial isolates, sps of Pseudomonas could degrade 88% of dimethoate while Bacillus sps exhibited high degradation rate of 92% which can be commercialized for bioremediation of dimethoate contaminated sites. Further, the rate of degradation is maximum at 72hrs of incubation.

References

11 Cites in Article
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  2. B Bhadbhaden,P Dhakephalker,S Sarnaik,P Kanekar (2002). Plasmid-associated biodegradation of an organophosphorous pesticide by Pseudomonas mendocina.
  3. Deb Mandal,M Nk (2002). Evaluation of bioremediation potential of organophosphorous pesticide dimethoate 30%. EC by heavy metal and antibiotic resistance proteous vulgaris isolated from Ganges at Sreerampore.
  4. N Deshpande,P Dhakephalkar,P Kaniker (2001). Plasmid mediated dimethoate degradation in Pseudomonas aeruginosa.
  5. Phillip Graebing,Michael Frank,J Chib (2002). Effects of Fertilizer and Soil Components on Pesticide Photolysis.
  6. T Kadam,V Jadhav,G Gyananath (2003). degradation of dimethoate by gram negative soil isolated from cotton field.
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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Ravuri Jayamadhuri. 2014. \u201cDegradation of Dimethoate by Cellulolytic Bacteria in Cotton Soils\u201d. Global Journal of Medical Research - C: Microbiology & Pathology GJMR-C Volume 14 (GJMR Volume 14 Issue C1): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjmra

Print ISSN 0975-5888

e-ISSN 2249-4618

Version of record

v1.2

Issue date

March 8, 2014

Language
en
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Published Article

The present experience has been aimed to isolate bacteria specifically cellulolytic bacteria, normally found in cotton soils and determine their role in degradation of the specific pesticide. Two cellulolytic bacterial isolates k1 & k2 identified as Pseudomonas putida and Bacillus pumulus were capable of growing on dimethoate supplemented medium. P.putida exhibited maximum growth of 4.1x 106 cfu/ ml at 0.09 mg/ml while B.pumulus showed significant growth of 2.2 x107 cfu/ml at 0.06mg/ml of dimethoate after 72hrs of incubation at room temperature. Rate of utilization of dimethoate increased progressively with increase in the concentration of yeast extract added to the medium up to 0.56% in P.putida and 0.7% in B.pumulus. The present findings indicate that among the two bacterial isolates, sps of Pseudomonas could degrade 88% of dimethoate while Bacillus sps exhibited high degradation rate of 92% which can be commercialized for bioremediation of dimethoate contaminated sites. Further, the rate of degradation is maximum at 72hrs of incubation.

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Degradation of Dimethoate by Cellulolytic Bacteria in Cotton Soils

Ravuri Jayamadhuri
Ravuri Jayamadhuri

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