title: Compound-specific isotopic fractionation patterns suggest different carbon metabolisms among Chloroflexus-like bacteria in hot-spring microbial mats.
abstract: Stable carbon isotope fractionations between dissolved inorganic carbon and lipid biomarkers suggest photoautotrophy by Chloroflexus-like organisms in sulfidic and nonsulfidic Yellowstone hot springs. Where co-occurring, cyanobacteria appear to cross-feed Chloroflexus-like organisms supporting photoheterotrophy as well, although the relatively small 13C fractionation associated with cyanobacterial sugar biosynthesis may sometimes obscure this process.
authors.affiliation: Department of Marine Biogeochemistry and Toxicology, Royal Netherlands Institute for Sea Research, 1790 AB Den Burg, Texel, The Netherlands. mmeer@nioz.nl
authors.forename: Marcel T J
authors.initials: MT
authors.lastname: van der Meer
authors.forename: Stefan
authors.initials: S
authors.lastname: Schouten
authors.forename: Jaap S
authors.initials: JS
authors.lastname: Sinninghe Damsté
authors.forename: Jan W
authors.initials: JW
authors.lastname: de Leeuw
authors.forename: David M
authors.initials: DM
authors.lastname: Ward
mesh_terms: D018533:Biomass; D002244:Carbon / Q000378:metabolism*; D002245:Carbon Dioxide / Q000378:metabolism; D002247:Carbon Isotopes / Q000378:metabolism*; D041861:Chloroflexus / Q000254:growth & development / Q000378:metabolism*; D002849:Chromatography, Gas; D003470:Culture Media; D000458:Cyanobacteria / Q000254:growth & development / Q000378:metabolism; D005618:Fresh Water / Q000382:microbiology*; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D050356:Lipid Metabolism; D009005:Monosaccharides / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D003470:Culture Media; D009005:Monosaccharides; D002245:Carbon Dioxide; D002244:Carbon