Open AccessCarbon Isotope Fractionation during Acetoclastic Methanogenesis by Methanosaeta concilii in Culture and a Lake Sediment
Author(s) -
Holger Penning,
Peter Claus,
Peter Casper,
Ralf Conrad
Publication year - 2006
Publication title -
applied and environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 324
eISSN - 1070-6291
pISSN - 0099-2240
DOI - 10.1128/aem.00727-06
Subject(s) - methanosaeta , methanogenesis , environmental chemistry , methanosarcina , sediment , fractionation , biology , isotopes of carbon , methanosarcina barkeri , methane , chemistry , ecology , total organic carbon , chromatography , paleontology
The isotope enrichment factors (ε) inMethanosaeta concilii and in a lake sediment, where acetate was consumed only byMethanosaeta spp., were clearly less negative than the ε usually observed forMethanosarcina spp. The fraction of methane produced from acetate in the sediment, as determined by using stable isotope signatures, was 10 to 15% lower when the appropriate ε ofMethanosaeta spp. was used.