Comparison of lipid biomarker and gene abundance characterizing the archaeal ammonia-oxidizing community in flooded soils
Comparison of lipid biomarker and gene abundance characterizing the archaeal ammonia-oxidizing community in flooded soils
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DOI：
10.1007/s00374-011-0552-6
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发表时间：
2011-10-01
影响因子：
6.5
通讯作者：
Schloter, Michael
中科院分区：
文献类型：
--
作者：
Bannert, Andrea;Mueller-Niggemann, Cornelia;Schloter, Michael
在过去的几年里，古细菌已经被确定为全球氮循环的关键参与者，特别是在硝化作用中。氨氧化古细菌（AOA）被认为属于新的古细菌门，其脂质crenarchaeol应该是特异性的。氨单加氧酶基因和crenarchaeol这两个独立的AOA标记物的比值已在不同的曝气土壤中进行了研究，但尚未在淹水土壤中进行研究。本研究对4种水稻土和一个潮汐湿地中的氨氧化古菌进行了研究。与潮汐湿地相比，水稻土中的氨氧化比例明显更高，总体上高于高地土壤，这使得人们假设，不同于含crenarchaeol的古细菌可能在水稻土中发挥重要作用。
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.