Extremophiles in an Antarctic Marine Ecosystem
AbstractRecent attempts to explore marine microbial diversity and the global marine microbiome have indicated a large proportion of previously unknown diversity. However, sequencing alone does not tell the whole story, as it relies heavily upon information that is already contained within sequence databases. In addition, microorganisms have been shown to present small-to-large scale biogeographical patterns worldwide, potentially making regional combinations of selection pressures unique. Here, we focus on the extremophile community in the boundary region located between the Polar Front and the Southern Antarctic Circumpolar Current in the Southern Ocean, to explore the potential of metagenomic approaches as a tool for bioprospecting in the search for novel functional activity based on targeted sampling efforts. We assessed the microbial composition and diversity from a region north of the current limit for winter sea ice, north of the Southern Antarctic Circumpolar Front (SACCF) but south of the Polar Front. Although, most of the more frequently encountered sequences were derived from common marine microorganisms, within these dominant groups, we found a proportion of genes related to secondary metabolism of potential interest in bioprospecting. Extremophiles were rare by comparison but belonged to a range of genera. Hence, they represented interesting targets from which to identify rare or novel functions. Ultimately, future shifts in environmental conditions favoring more cosmopolitan groups could have an unpredictable effect on microbial diversity and function in the Southern Ocean, perhaps excluding the rarer extremophiles. View Full-Text
- Supplementary File 1:
Supplementary (DOCX, 36 KB)
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Dickinson, I.; Goodall-Copestake, W.; Thorne, M.A.; Schlitt, T.; Ávila-Jiménez, M.L.; Pearce, D.A. Extremophiles in an Antarctic Marine Ecosystem. Microorganisms 2016, 4, 8.
Dickinson I, Goodall-Copestake W, Thorne MA, Schlitt T, Ávila-Jiménez ML, Pearce DA. Extremophiles in an Antarctic Marine Ecosystem. Microorganisms. 2016; 4(1):8.Chicago/Turabian Style
Dickinson, Iain; Goodall-Copestake, William; Thorne, Michael A.; Schlitt, Thomas; Ávila-Jiménez, Maria L.; Pearce, David A. 2016. "Extremophiles in an Antarctic Marine Ecosystem." Microorganisms 4, no. 1: 8.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.