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首页> 美国政府科技报告 >Signature lipid biomarkers for in situ microbial biomass, community structure and nutritional status of deep subsurface microbiota in relation to geochemical gradients. Final technical report
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Signature lipid biomarkers for in situ microbial biomass, community structure and nutritional status of deep subsurface microbiota in relation to geochemical gradients. Final technical report

机译：与地球化学梯度相关的深部地下微生物群的原位微生物生物量，群落结构和营养状况的特征脂质生物标志物。最终技术报告

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摘要

To obtain a better understanding of the microbial ecology of the deep subsurface, it was necessary to employ alternate techniques for the identification of microorganisms in situ. Classical microbiological techniques assay only those organisms which are culturable with bias occurring towards the media selected. Since culturable microorganisms typically represents only 0.1 to 10% of the extant microbiota, techniques for the direct assay of microorganisms in situ were needed. The analysis of cellular lipid biomarkers is a technique whereby microbial communities can be assayed directly in a variety of environmental matrices. Through the quantitative recovery of lipid biomarkers, estimations of cell biomass, community composition and community nutritional and/or physiological status can be obtained.

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