Microbial communities and chemosynthesis in Yellowstone Lake sublacustrine hydrothermal vent waters
Yang T, Lyons S, Aguilar C, Cuhel R, Teske A. 2011. Microbial communities and chemosynthesis in Yellowstone Lake sublacustrine hydrothermal vent waters. Frontiers in Microbiology. 2
Fivesublacustrinethermalspringlocationsfrom1to109mwaterdepthinYellowstoneLakeweresurveyedby16SribosomalRNAgenesequencinginrelatontotheirchemi-calcompositionanddarkCO2fixationrates.Theyharbordistinctchemosyntheticbacterialcommunities,dependingontemperature(16–110˚C)andelectrondonorsupply(H2S 100μM;NH3 10μM).MembersoftheAquificales,mostcloselyaffiliatedwiththegenusSulfurihydrogenibium,arethemostfrequentlyrecoveredbacterial16SrRNAgenephylotypesinthehottestsamples;thedetectionofthesethermophilicsulfur-oxidizingautotrophscoincidedwithmaximaldarkCO2fixationratesreachingnear9μMCh−1attemperaturesof50–60˚C.VentsatlowertemperaturesyieldedmostlyphylotypesrelatedtothemesophilicgammaproteobacterialsulfuroxidizerThiovirga.Incontrast,coolventwaterwithlowchemosyntheticactivityyieldedpredominantlyphylotypesrelatedtofreshwaterActinobacterialclusterswithacosmopoltandistribution.
- Type
- Journal Article
- Authors
- Yang, Tingting; Lyons, Shawn; Aguilar, Carmen; Cuhel, Russell; Teske, Andreas
- Units
- GRYN , YELL
- Keywords
- chemosynthesis, hydrothermalvents, sublacustrine springs, Sulfurihydrogenibium, Thiovirga, Yellowstone