The imbalance between N2O production and reduction by multi-microbial communities determines sedimentary N2O emission potential in the Pearl River Estuary
文献类型：期刊论文
| 作者 | Hu, Yaohao1,2; Wu, Jiapeng2; Ye, Jiaqi2; Liu, Xiaohan2; Wang, Yu2; Ye, Fei2; Hong, Yiguo2 |
| 刊名 | MARINE ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 190页码:13 |
| 关键词 | Nitrous oxide Denitrification N2O production N2O reduction Multi-microbial communities Estuarine sediments |
| ISSN号 | 0141-1136 |
| DOI | 10.1016/j.marenvres.2023.106119 |
| 英文摘要 | Denitrification is the dominant process of nitrogen removal and nitrous oxide (N2O) emissions in estuarine ecosystems. However, little is known regarding the microbial mechanism of the production and reduction of N2O in estuaries. We investigated in situ dissolved N2O as well as potential N2O production rate (NPR), reduction rate (NRR), and emission rate (NER), and key functional genes related to N2O transformation of denitrification in the Pearl River Estuary. Higher N2O emission potential was found in the upstream and midstream regions with higher NPR and lower NRR values. In contrast, higher NRR values were detected in downstream. Notably, nirS and nirK type N2O producers dominated the upstream zone, whereas abundant N2O reducers, especially nosZ II type N2O reducers, were observed in downstream. Most importantly, the gene abundance ratio (Rnir/nosZ) was significantly correlated with the N2O emission potential (Re). Niche differentiation between N2O producers and N2O reducers from upstream to downstream affected N2O emission potential. This study highlights the N2O emission potential in estuarine sediments is determined by an imbalance between N2O production and the reduction of multi-bacterial communities. |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:001055060600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74755]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Hong, Yiguo |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Guangzhou Univ, Inst Environm Res Greater Bay Area, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Yaohao,Wu, Jiapeng,Ye, Jiaqi,et al. The imbalance between N2O production and reduction by multi-microbial communities determines sedimentary N2O emission potential in the Pearl River Estuary[J]. MARINE ENVIRONMENTAL RESEARCH,2023,190:13. |
| APA | Hu, Yaohao.,Wu, Jiapeng.,Ye, Jiaqi.,Liu, Xiaohan.,Wang, Yu.,...&Hong, Yiguo.(2023).The imbalance between N2O production and reduction by multi-microbial communities determines sedimentary N2O emission potential in the Pearl River Estuary.MARINE ENVIRONMENTAL RESEARCH,190,13. |
| MLA | Hu, Yaohao,et al."The imbalance between N2O production and reduction by multi-microbial communities determines sedimentary N2O emission potential in the Pearl River Estuary".MARINE ENVIRONMENTAL RESEARCH 190(2023):13. |
入库方式： OAI收割
来源：广州地球化学研究所
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