%0 Journal Article %T Non-isoprenoid macrocyclic glycerol diethers associated with authigenic carbonates %+ PaleoEnvironnements et PaleobioSphere (PEPS) %+ Organic Geochemistry Unit - OGU (Bristol, United Kingdom) %A Baudrand, Marion %A Grossi, Vincent %A Pancost, Richard %A Aloisi, Giovanni %Z CNRS-INSU %< avec comité de lecture %@ 0146-6380 %J Organic Geochemistry %I Elsevier %V 41 %N 12 %P 1341-1344 %8 2010-12 %D 2010 %R 10.1016/j.orggeochem.2010.09.002 %K METHANOCOCCUS-JANNASCHII %K LIPIDS %K MEMBRANE %K BACTERIA %K TETRAETHER %K SULFIDE %K ARCHAEA %K METHANE %K ALKANES %K ACID %Z Sciences of the Universe [physics]/Earth Sciences/Geochemistry %Z Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] %Z Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] %Z Environmental Sciences/Global ChangesJournal articles %X A series of novel non-isoprenoid macrocyclic glycerol diethers (McDGs) has been identified in authigenic carbonates formed from marine evaporites in Spain (Lorca Basin) and Egypt (Gemsa). They contain a C(32) diabolic acid-derived alkyl moiety (i.e. 15,16-dimethyltriacontane), with some components bearing additional methyl branching at C-7 and/or C-24, and show a similar distribution at each sampling site. These McGDs are suggested to have been synthesized by some extremophilic (thermophilic and/or halophilic) bacteria. Compound specific delta(13)C data indicate distinct carbon cycling by bacteria and archaea at both sites. %G English %L insu-00686806 %U https://insu.hal.science/insu-00686806 %~ SDE %~ INSU %~ CNRS %~ UNIV-LYON1 %~ GIP-BE %~ UDL %~ UNIV-LYON