Arsenic Resistance in Ochrobactrum tritici
Author Information
Author(s): Rita Branco, Ana-Paula Chung, Paula V Morais
Primary Institution: IMAR-Laboratory of Microbiology, University of Coimbra
Hypothesis
What mechanisms allow the strain Ochrobactrum tritici SCII24T to resist high levels of arsenic?
Conclusion
The study identifies two operons in Ochrobactrum tritici that confer resistance to different forms of arsenic.
Supporting Evidence
- Ochrobactrum tritici SCII24 was able to grow in media with arsenite and arsenate.
- The strain contains two arsenic resistance operons, ars1 and ars2.
- The ars1 operon conferred resistance to arsenite and antimonite.
- The ars2 operon was responsible for resistance to arsenite and arsenate.
Takeaway
This study found that a type of bacteria can survive in very high levels of arsenic by using special genes that help it deal with the poison.
Methodology
The study involved cloning and sequencing two arsenic resistance operons from the bacterium and testing their function in E. coli.
Limitations
The study did not explore the presence of other potential resistance mechanisms in the bacteria.
Digital Object Identifier (DOI)
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