Community structure in a methanotroph by phospholipid fatty acid biofilter as revealed analysis

被引:31
|
作者
Gebert, J
Gröngröft, A
Schloter, M
Gattinger, A
机构
[1] Univ Hamburg, Inst Soil Sci, D-20146 Hamburg, Germany
[2] GSF Natl Res Ctr Environm & Hlth, Inst Soil Ecol, D-85764 Neuherberg, Germany
关键词
methane oxidation; methanotroph; phospholipid fatty acid; landfill; biofilter;
D O I
10.1016/j.femsle.2004.09.013
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The microbial community structure of two biofilters used for the oxidation of methane and organic trace gases generated in landfills was analysed by phospholipid fatty acid composition. Community structure varied with biofilter depth, reflecting varying conditions of substrate supply as well as of organic carbon content, nutrient status and osmotic stress determined by the different materials used for the individual biofilter layers. Both biofilters were dominated by type 11 methanotrophs. In the biofilter charged with landfill gas containing significant amounts of trace organics, fatty acid 18: 1 omega7c constituted 87% of the methanotrophic PLFA, while the recognised signature fatty acids 16: 1omega8 and 18: 1omega8, which were well represented in the other biofilter, were entirely absent. This indicates the development of a highly specific methanotrophic population, presumably as a result of the adaption to continuous organic trace gas exposure. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:61 / 68
页数:8
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