Living at the Limits : Evidence for Microbial Eukaryotes Thriving under Pressure in Deep Anoxic, Hypersaline Habitats
Joint Authors
Stock, Alexandra
Filker, Sabine
Breiner, Hans-Werner
Pachiadaki, Maria
Edgcomb, Virginia
Orsi, William
LaCono, Violetta
Stoeck, Thorsten
Yakimov, Michail M.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Biology
Abstract EN
The advent of molecular tools in microbial ecology paved the way to exploit the diversity of microbes in extreme environments.
Here, we review these tools as applied in one of the most polyextreme habitats known on our planet, namely, deep hypersaline anoxic basins (DHABs), located at ca.
3000–3500 m depth in the Eastern Mediterranean Sea.
Molecular gene signatures amplified from environmental DHAB samples identified a high degree of genetic novelty, as well as distinct communities in the DHABs.
Canonical correspondence analyses provided strong evidence that salinity, ion composition, and anoxia were the strongest selection factors shaping protistan community structures, largely preventing cross-colonization among the individual basins.
Thus, each investigated basin represents a unique habitat (“isolated islands of evolution”), making DHABs ideal model sites to test evolutionary hypotheses.
Fluorescence in situ hybridization assays using specifically designed probes revealed that the obtained genetic signatures indeed originated from indigenous polyextremophiles.
Electron microscopy imaging revealed unknown ciliates densely covered with prokaryote ectosymbionts, which may enable adaptations of eukaryotes to DHAB conditions.
The research reviewed here significantly advanced our knowledge on polyextremophile eukaryotes, which are excellent models for a number of biological research areas, including ecology, diversity, biotechnology, evolutionary research, physiology, and astrobiology.
American Psychological Association (APA)
Stoeck, Thorsten& Filker, Sabine& Edgcomb, Virginia& Orsi, William& Yakimov, Michail M.& Pachiadaki, Maria…[et al.]. 2014. Living at the Limits : Evidence for Microbial Eukaryotes Thriving under Pressure in Deep Anoxic, Hypersaline Habitats. Advances in Ecology،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-479286
Modern Language Association (MLA)
Stoeck, Thorsten…[et al.]. Living at the Limits : Evidence for Microbial Eukaryotes Thriving under Pressure in Deep Anoxic, Hypersaline Habitats. Advances in Ecology No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-479286
American Medical Association (AMA)
Stoeck, Thorsten& Filker, Sabine& Edgcomb, Virginia& Orsi, William& Yakimov, Michail M.& Pachiadaki, Maria…[et al.]. Living at the Limits : Evidence for Microbial Eukaryotes Thriving under Pressure in Deep Anoxic, Hypersaline Habitats. Advances in Ecology. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-479286
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479286