In situ expression of eukaryotic ice-binding proteins in microbial communities of Arctic and Antarctic sea ice


Contact
Christiane.Uhlig [ at ] awi.de

Abstract

Ice-binding proteins (IBPs) have been isolated from various sea-ice organisms. Their characterisation points to a crucial role in protecting the organisms in sub-zero environments. However, their in situ abundance and diversity in natural sea-ice microbial communities is largely unknown. In this study, we analysed the expression and phylogenetic diversity of eukaryotic IBP transcripts from microbial communities of Arctic and Antarctic sea ice. IBP transcripts were found in abundances similar to those of proteins involved in core cellular processes such as photosynthesis. Eighty-nine percent of the IBP transcripts grouped with known IBP sequences from diatoms, haptophytes and crustaceans, but the majority represented novel sequences not previously characterized in cultured organisms. The observed high eukaryotic IBP expression in natural eukaryotic sea ice communities underlines the essential role of IBPs for survival of many microorganisms in communities living under the extreme conditions of polar sea ice.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Publication Status
Published
Eprint ID
37796
DOI 10.1038/ismej.2015.43

Cite as
Uhlig, C. , Kilpert, F. , Frickenhaus, S. , Kegel, J. , Krell, A. , Mock, T. , Valentin, K. U. and Beszteri, B. (2015): In situ expression of eukaryotic ice-binding proteins in microbial communities of Arctic and Antarctic sea ice , Isme Journal . doi: 10.1038/ismej.2015.43


Download
[thumbnail of Uhlig_etal_2015.pdf]
Preview
PDF
Uhlig_etal_2015.pdf

Download (1MB) | Preview
Cite this document as:
[thumbnail of Uhlig_etal_2015_supplementary.pdf]
Preview
PDF
Uhlig_etal_2015_supplementary.pdf

Download (1MB) | Preview
Cite this document as:

Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Citation

Geographical region

Research Platforms

Campaigns
ANT > XXIII > 7


Actions
Edit Item Edit Item