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Chapters
- 00:05Title
- 02:03Sample Acquisition
- 04:24Development of Enrichment Cultures
- 06:42Cell Lysate Extraction from Filtered Enrichments
- 08:44RubisCO Carboxylase Activity Filter Assay
- 11:17Results: Analysis of Novel Protists from Lake Bonney, Antarctica
- 13:55Conclusion
Microbial eukaryotes are both a source of photosynthetically-derived carbon and top predatory species in permanently ice-covered Antarctic lakes. This report describes an enrichment culture approach to isolate metabolically versatile microbial eukaryotes from the Antarctic lake, Lake Bonney, and assesses inorganic carbon fixation potential using a radioisotope assay for Ribulose-1,5-bisphophate carboxylase oxygenase (RubisCO) activity.
Tags
Microbial EukaryotesAntarctic LakeChemically StratifiedCarbon Fixation PotentialLake BonneyIce-covered LakesMcMurdo Dry ValleysEnvironmental StressesNutrient DeficiencyLow TemperaturesExtreme ShadeHypersalinityDarknessMicroorganismsProtistsBiogeochemical CyclingCarbon CyclingAutotrophyPrimary ProducersTertiary RolesFood WebPhagotrophic ProtistsHeterotrophic ProtistsMixotrophic Metabolism
