期刊
BIOLOGY AND FERTILITY OF SOILS
卷 47, 期 7, 页码 839-843出版社
SPRINGER
DOI: 10.1007/s00374-011-0552-6
关键词
Ammonia-oxidizing archaea (amoA gene); Paddy soil; Tidal wetland; Isoprenoidal GDGT; Crenarchaeol; Caldarchaeol
类别
资金
- German Research Foundation DFG
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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