NDLI: Isolation and characterization of Pseudomonas sp. DX7 capable of degrading sulfadoxine

Content Provider	Springer Nature Link
Author	Zhang, Weiwei Xu, Dongxue Niu, Zongliang Yin, Kun Liu, Ping Chen, Lingxin
Copyright Year	2011
Abstract	Given that the intensive application of sulfonamides in aquaculture, animal husbandry and malaria treatment has lead to an increase in sulfonamide discharge into the environment, there is an increasing need to find a way to remediate sulfonamide-contaminated sites. The bacterial strain DX7 was isolated from a marine environment and is capable of degrading sulfadoxine. DX7 was identified as a Pseudomonas sp. based on 16S rRNA gene sequencing. Approximately 30% of sulfadoxine was degraded after Pseudomonas sp. DX7 was inoculated into mineral salt plus tryptone media containing 10 mg l−1 sulfadoxine for 2 days. The degradation efficiency under different environmental conditions was characterized using HPLC. The optimal temperature and pH for sulfadoxine biodegradation were around 30°C and 6.0, respectively. The optimal concentrations of sulfadoxine and tryptone for sulfadoxine biodegradation were determined to be approximately 30 mg l−1 and between 2.0 and 8.0 g l−1, respectively. Cytotoxicity analysis indicated that the metabolites of sulfadoxine generated by Pseudomonas sp. DX7 showed significantly reduced cytotoxicity to Hela cells. These results suggest that Pseudomonas sp. DX7 is a new bacterial resource for degrading sulfadoxine and indicate the potential of the isolated strain in the bioremediation of sulfadoxine-contaminated environments.
Starting Page	431
Ending Page	439
Page Count	9
File Format	PDF
ISSN	09239820
Journal	Biodegradation
Volume Number	23
Issue Number	3
e-ISSN	15729729
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-11-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sulfadoxine Pseudomonas sp. Degradation Cytotoxicity Terrestrial Pollution Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Waste Management/Waste Technology Geochemistry Soil Science & Conservation Microbiology
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Environmental Engineering Bioengineering Microbiology

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