Architecture of thermal adaptation in an Exiguobacterium sibiricum strain isolated from 3 million year old permafrost: A genome and transcriptome approach
2008
Understanding How Exiguobacterium sibiricum Adapts to Extreme Temperatures
publication
Evidence: moderate
Author Information
Author(s): Debora F Rodrigues, Natalia Ivanova, He Zhili, Marianne Huebner, Jizhong Zhou, James M Tiedje
Primary Institution: Michigan State University
Hypothesis
How does Exiguobacterium sibiricum adapt to extreme temperatures?
Conclusion
E. sibiricum is adapted to cold temperatures, showing minimal gene expression changes at moderate temperatures but significant adaptations at extreme temperatures.
Supporting Evidence
- E. sibiricum shows little differential gene expression between 4°C and 28°C.
- Significant physiological adaptations were observed at -2.5°C and 39°C.
- The genome analysis revealed a total of 3,015 protein-encoding genes.
- 27% of E. sibiricum CDS were differentially expressed at -2.5°C compared to 28°C.
Takeaway
This study looks at a tiny bacteria that can live in really cold places and how it changes to survive when it's super cold or really warm.
Methodology
The study involved genome and transcriptome analysis of Exiguobacterium sibiricum grown at various temperatures.
Digital Object Identifier (DOI)
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