Comparison of lipid biomarker and gene abundance characterizing the archaeal ammonia-oxidizing community in flooded soils |
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| Authors: | Andrea Bannert Cornelia Mueller-Niggemann Kristina Kleineidam Livia Wissing Zhi-Hong Cao Lorenz Schwark Michael Schloter |
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| Institution: | 1.Soil Ecology,Technische Universit?t München,Neuherberg,Germany;2.Institute of Geosciences,University Kiel,Kiel,Germany;3.Institute of Soil Ecology, Department of Terrestrial Ecogenetics,Helmholtz Zentrum München – German Research Center for Environmental Health,Neuherberg,Germany;4.Soil Science,Technische Universit?t München,Freising-Weihenstephan,Germany;5.Institute of Soil Science,Chinese Academy of Sciences,Nanjing,China |
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| Abstract: | In the last years, archaea have been identified as key players in global N cycling, especially in nitrification. Ammonia-oxidizing
archaea (AOA) are postulated to belong to the new phylum Thaumarchaeota for which the lipid crenarchaeol should be specific.
The ratios between two independent markers for AOA, the ammonia monooxygenase gene and crenarchaeol have been studied in different
aerated soils, but so far not in flooded soils. This study investigated ammonia-oxidizing archaea in four paddy soils and
a tidal wetland. Ratios were significantly higher in the paddy soils compared to the tidal wetland and in general higher as
in upland soils, leading to the assumption that archaeal ammonia oxidizers different from crenarchaeol-containing Thaumarchaeota
may play an important role in paddy soils. |
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