A positive relationship between the abundance of ammonia oxidizing archaea and natural abundance ¦Ä¹⁵N of ecosystems

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• 作者：Karen Adair ; Steven J. Blazewicz ; Bruce A. Hungate ; Stephen C. Hart ; Paul Dijkstra ; Egbert Schwartz
• 关键词：Natural abundance15N Composition ; Soil DNA ; Nitrification ; Ammonia oxidation ; Ammonia oxidizing archaea ; Ecosystem N release
• 刊名：Soil Biology & Biochemistry
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：65
• 期：Complete
• 页码：313-315
• 全文大小：310 K

文摘

We present a significant relationship between the natural abundance isotopic composition of ecosystem pools and the abundance of a microbial gene. Natural abundance ¹⁵N of soils and soil DNA were analysed and compared with archaeal ammonia oxidizer abundance along an elevation gradient in northern Arizona and along a substrate age gradient in Hawai'i. There was a significant positive correlation between the abundance of archaeal amoA genes and natural abundance ¦Ä¹⁵N of total soil or DNA suggesting that ammonia oxidizing archaea play an important role in ecosystem N release.