The contribution of nirK gene-containing thaumarchaea to denitrification and N2O production across coastal sediment and terrestrial ecosystems
文献类型：期刊论文
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| 作者 | Han, Bing ; Liu, Si-Yi; Han, Li-Li; Song, Xiao-Tong; Mo, Liu-Ying; Zhang, Li-Mei
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| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
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| 出版日期 | 2022-08 |
| 卷号 | 22期号:8页码:2246-2261 |
| ISSN号 | 1439-0108 |
| 关键词 | AMMONIA-OXIDIZING ARCHAEA NITROUS-OXIDE NITRITE REDUCTASE DENITRIFYING BACTERIA AMOA GENES SOIL DIVERSITY ABUNDANCE PATHWAYS GENOME |
| 英文摘要 | Purpose Ammonia-oxidizing archaea (AOA) are ubiquitous in aquatic and terrestrial environments, and the copper-containing nitrite reductase (NirK) plays a pivotal role in AOA metabolism. However, distribution and function of nirK gene-containing thaumarchaea (AnirK) have rarely been estimated, especially in terrestrial ecosystems. Methods Soil and sediment samples were taken from 20 sites including coastal mud flat, freshwater wetland, paddy soil, agricultural upland, and forest soil. Potential N2O production rates, community composition, and transcriptional activity of nirK gene-containing thaumarchaea in different habitats were investigated by combining field surveys with microcosm incubations. Results AnirK gene abundance and N2O production rates were significantly higher in flooded habitats like freshwater wetland and paddy soil than in agricultural upland and forest soils. In comparison to the AOA amoA gene, AnirK gene was less diverse and mainly affiliated within Candidatus Nitrosoarchaeum, Nitrosopumilus, and Candidatus Nitrosotenuis (Group I.1a) and Candidatus Nitrosotalea (Group I.1a-associated). Microcosm incubations further demonstrated that AnirK gene transcription activity was significantly higher than bacterial nirK and nirS genes, corresponding to the high nitrate reduction and N2O emissions in wetland and paddy soil. Nitrosopumilus in coastal sediment and Candidatus Nitrosoarchaeum in paddy soil and wetland were identified as the active AnirK gene carriers. Conclusion Our study demonstrated that the AnirK gene was widely present in coastal sediment and terrestrial ecosystem like wetland and paddy soils, and that AnirK gene-containing Nitrosopumilus and Candidatus Nitrosoarchaeum are potential active contributors to nitrite reduction and N2O production in these ecosystems. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47350]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Beihai Forestry Res Inst, Guangxi 536000, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, 18 Shuangqing Rd, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Bing,Liu, Si-Yi,Han, Li-Li,et al. The contribution of nirK gene-containing thaumarchaea to denitrification and N2O production across coastal sediment and terrestrial ecosystems, The contribution of nirK gene-containing thaumarchaea to denitrification and N2O production across coastal sediment and terrestrial ecosystems.pdf[J]. JOURNAL OF SOILS AND SEDIMENTS,2022,22(8):2246-2261. |
| APA | Han, Bing,Liu, Si-Yi,Han, Li-Li,Song, Xiao-Tong,Mo, Liu-Ying,&Zhang, Li-Mei.(2022).The contribution of nirK gene-containing thaumarchaea to denitrification and N2O production across coastal sediment and terrestrial ecosystems.JOURNAL OF SOILS AND SEDIMENTS,22(8),2246-2261. |
| MLA | Han, Bing,et al."The contribution of nirK gene-containing thaumarchaea to denitrification and N2O production across coastal sediment and terrestrial ecosystems".JOURNAL OF SOILS AND SEDIMENTS 22.8(2022):2246-2261. |
入库方式： OAI收割
来源：生态环境研究中心
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