Copper and cadmium co-contamination increases the risk of nitrogen loss in red paddy soils
文献类型：期刊论文
| 作者 | Guo, Yifan4; Cheng, Shulan4; Fang, Huajun3,4; Geng, Jing2; Li, Yuna4; Shi, Fangying4; Wang, Hui4; Chen, Long4; Zhou, Yi4 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2024-11-05 |
| 卷号 | 479页码:135626 |
| 关键词 | Cu and Cd co-contamination Soil microbiome Metagenome Nitrogen cycling Metagenomic binning |
| DOI | 10.1016/j.jhazmat.2024.135626 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The microbiome plays a crucial role in soil nitrogen (N) cycling and in regulating its bioavailability. However, the functional and genomic information of microorganisms encoding N cycling in response to copper (Cu) and cadmium (Cd) contamination is largely unknown. Here, metagenomics and genome binning were used to examine microbial N cycling in Cu and Cd co-contaminated red paddy soils collected from a polluted watershed in southern China. The results showed that soil Cu and Cd concentrations induced more drastic changes in microbial N functional and taxonomic traits than soil general properties. Soil Cu and Cd co-contamination stimulated microbial nitrification, denitrification, and dissimilatory nitrate reduction processes mainly by increasing the abundance of Nitrospira (phylum Nitrospirota), while inhibiting N fixation by decreasing the abundance of Desulfobacca. . These contrasting changes in microbial N cycling processes suggested a potential risk of N loss in paddy soils. A high-quality genome was identified as belonging to Nitrospirota with the highest abundance in heavily contaminated soils. This novel Nitrospirota strain possessed metabolic capacities for N transformation and metal resistance. These findings elucidate the genetic mechanisms underlying soil N bioavailability under long-term Cu and Cd contamination, which is essential for maintaining agricultural pro- ductivity and controlling heavy metal pollution. |
| WOS关键词 | ACTINOBACTERIA |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:001307475800001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207946]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Fang, Huajun |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Geospatial Engn & Sci, Zhuhai 519082, Peoples R China 2.Zhongke Jian Inst Ecoenvironm Sci, Jian 343000, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Yifan,Cheng, Shulan,Fang, Huajun,et al. Copper and cadmium co-contamination increases the risk of nitrogen loss in red paddy soils[J]. JOURNAL OF HAZARDOUS MATERIALS,2024,479:135626. |
| APA | Guo, Yifan.,Cheng, Shulan.,Fang, Huajun.,Geng, Jing.,Li, Yuna.,...&Zhou, Yi.(2024).Copper and cadmium co-contamination increases the risk of nitrogen loss in red paddy soils.JOURNAL OF HAZARDOUS MATERIALS,479,135626. |
| MLA | Guo, Yifan,et al."Copper and cadmium co-contamination increases the risk of nitrogen loss in red paddy soils".JOURNAL OF HAZARDOUS MATERIALS 479(2024):135626. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。