Microbial Diversity and Enzymes in Ikaite Columns: A Cold and Alkaline Environment in Greenland
| Autor: | Jan Kjølhede Vester, Peter Stougaard, Mikkel A. Glaring, Jeanette E. Lylloff |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
education.field_of_study geography geography.geographical_feature_category biology Ecology Population Fjord 16S ribosomal RNA biology.organism_classification Ikaite Enzyme Microbial population biology chemistry Environmental chemistry Proteobacteria education Geology Bacteria |
| Zdroj: | Cellular Origin, Life in Extreme Habitats and Astrobiology ISBN: 9789400764873 |
| DOI: | 10.1007/978-94-007-6488-0_15 |
| Popis: | The ikaite columns in the Ikka Fjord, SW Greenland, constitute a cold (4 °C), alkaline (pH 10.4), and low-salinity (0.9 %) environment, and they harbor a microbial community adapted to this polyextreme environment. 16S rRNA gene sequence analyses show that the community is rich in new species and that Proteobacteria are dominating. So far, three new species have been characterized and described in detail: Rhodonellum psychrophilum, Arsukibacterium ikkense, and Alkalilactibacillus ikkensis. The bacteria produce a diversity of enzymes, including proteases, lipases, β-galactosidases, and phosphatases. These enzymes are adapted to the polyextreme environment and have application potentials in industrial and biotechnological processes. In this chapter, the research on the microbial population of the ikaite columns that has been conducted over the past decade will be reviewed. |
| Databáze: | OpenAIRE |
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