Bicarbonate uptake by marine Crenarchaeota

被引:187
作者
Wuchter, C
Schouten, S
Boschker, HTS
Damsté, JSS
机构
[1] Royal Netherlands Inst Sea Res, Dept Marine Biogeochem & Toxicol, NIOZ, NL-1790 AB Den Burg, Netherlands
[2] Netherlands Inst Ecol, NIOO, KNAW, NL-4400 CC Yerseke, Netherlands
关键词
Crenarchaeota; chemoautotrophy; glycerol dibiphytanyl glycerol tetraethers (GDGTs);
D O I
10.1016/S0378-1097(03)00060-0
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Biphytanyl membrane lipids and 16S rRNA sequences derived from marine Crenarchaeota were detected in shallow North Sea surface water in February 2002. To investigate the carbon fixation mechanism of these uncultivated archaea in situ C-13 bicarbonate tracer experiments were performed with this water in the absence of light. About 70% of the detected C-13 incorporation into lipids (including fatty acids and sterols) is accounted for by the crenarchaeotal biphytanyl membrane lipids. This finding indicates that marine Crenarchaeota can utilize bicarbonate or CO2 derived thereof in the absence of light and are chemoautotrophic organisms. (C) 2003 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:203 / 207
页数:5
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