Journal
JOURNAL OF PROTEOME RESEARCH
Volume 10, Issue 9, Pages 4105-4119Publisher
AMER CHEMICAL SOC
DOI: 10.1021/pr2003006
Keywords
archaea; sulfolobus; biofilm; proteomics; transcriptomics; FTIR; thermophilic; acidophilic
Categories
Funding
- Max Planck Society
- Dutch Science Organization (NWO)
- EPSRC [EP/E036252/1]
- BBSRC [BBF0034201]
- Biotechnology and Biological Sciences Research Council [BB/F003420/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/E053556/1, EP/E036252/1] Funding Source: researchfish
- BBSRC [BB/F003420/1] Funding Source: UKRI
- EPSRC [EP/E053556/1, EP/E036252/1] Funding Source: UKRI
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Microorganisms in nature often live in surface-associated sessile communities, encased in a self-produced matrix, referred to as biofilms. Biofilms have been well studied in bacteria but in a limited way for archaea. We have recently characterized biofilm formation in three closely related hyperthermophilic crenarchaeotes: Sulfolobus acidocaldarius, S. solfataricus, and S. tokodaii. These strains form different communities ranging from simple carpet structures in S. solfataricus to high density tower-like structures in S. acidocaldarius under static condition. Here, we combine spectroscopic, proteomic, and transcriptomic analyses to describe physiological and regulatory features associated with biofilms. Spectroscopic analysis reveals that in comparison to planktonic life-style, biofilm life-style has distinctive influence on the physiology of each Sulfolobus spp. Proteomic and transcriptomic data show that biofilm-forming lifestyle is strain specific (eg ca. 15% of the S. acidocaldarius genes were differently expressed, S. solfataricus and S. tokodaii had similar to 3.4 and similar to 1%, respectively). The -omic data showed that regulated ORFs were widely distributed in basic cellular functions, including surface modifications. Several regulated genes are common to biofilm-forming cells in all three species. One of the most striking common response genes include putative Lrs14-like transcriptional regulators, indicating their possible roles as a key regulatory factor in biofilm development.
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