Marine bacterium strain screening and pyrethroid insecticide-degrading efficiency analysis

Aili Sun; Jinghua Liu; Xizhi Shi; Dexiang Li; Jiong Chen; Daojun Tang

doi:10.1007/s00343-014-3299-8

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Marine bacterium strain screening and pyrethroid insecticide-degrading efficiency analysis

Updated：2023-05-16

- Marine bacterium strain screening and pyrethroid insecticide-degrading efficiency analysis
- Journal of Oceanology and Limnology Vol. 32, Issue 5, Pages: 1029-1035(2014)
- Affiliations：
  
  Key Laboratory of Applied Technology of Marine Biology Ministry of Education School of Marine Sciences Ningbo University
- Author bio：
- Funds：
- DOI：10.1007/s00343-014-3299-8
  CLC：
- Online First：24 May 2014，
  
  Published：2014
- Accepted：
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Sun, A., Liu, J., Shi, X. et al. Marine bacterium strain screening and pyrethroid insecticide-degrading efficiency analysis., Chin. J. Ocean. Limnol. 32, 1029–1035 (2014). https://doi.org/10.1007/s00343-014-3299-8
DOI：

Sun, A., Liu, J., Shi, X. et al. Marine bacterium strain screening and pyrethroid insecticide-degrading efficiency analysis., Chin. J. Ocean. Limnol. 32, 1029–1035 (2014). https://doi.org/10.1007/s00343-014-3299-8 DOI：

摘要

Abstract

A pyrethroid insecticide-degrading bacterium

strain HS-24

was isolated from an offshore seawater environment. The strain

which can degrade cypermethrin (CYP) and deltamethrin (DEL)

was identified as Methylophaga sp. The optimal culture and degradation conditions for CYP and DEL by strain HS-24 is pH 7 at 28°C. Under optimum culture conditions

strain HS-24 exhibited a broad degradation concentration range of 100

200

400

600

and 800 mg/L for CYP and DEL. The metabolic intermediates were analyzed by NMR

which provided strong evidence that CYP and DEL removal occurred mainly because of a biological process. The toxicity of the degradation products of strain HS-24 was studied simultaneously by measuring the light output of the luminescence bacterium. This demonstrated that the biodegradation ability of strain HS-24 significantly decreased the toxicity of CYP- and DEL-contaminated aquaculture seawater. Finally

the findings of this paper indicate that strain HS-24 is thus revealed as a biological agent for the remediation of marine aquatic environments.

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references

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