Dissimilatory nitrate reduction to ammonium dominates soil nitrate retention capacity in subtropical forests
文献类型：期刊论文
| 作者 | Shi, Xiuzhen; Wang, Jianqing; Mueller, Christoph; Hu, Hang-Wei; He, Ji-Zheng; Wang, Juntao; Huang, Zhiqun |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2020-08 |
| 卷号 | 56期号:6页码:785-797 |
| ISSN号 | 0178-2762 |
| 关键词 | Tree species N cycling Functional microbes N-15 tracing analysis Dissimilatory nitrate reduction to ammonium (DNRA) Illumina sequencing |
| 英文摘要 | The abundance, community composition and activity of key nitrogen (N)-cycling functional guilds were monitored at a site where coniferous Cunninghamia lanceolate and broadleaved Mytilaria laosensis were planted in 1993. Leaf cellulose, litter C/N ratio, leaf dry matter content, soil inorganic N content were significantly higher under C. lanceolata, while specific leaf area, litter production, litter magnesium, soil C and soil C/NO3- ratio were higher under M. laosensis. The N-15 tracing experiment together with quantitative PCR revealed that autotrophic nitrification rates, as well as the abundances of ammonia-oxidizing archaea and comammox Nitrospira were significantly higher under C. lanceolate than M. laosensis. However, M. laosensis exhibited substantially higher nitrate retention capacity via dissimilatory nitrate reduction to ammonium (DNRA), accompanied by a significantly higher abundance of nrfA gene than C. lanceolate. The Illumina sequencing indicated that tree species markedly affected soil bacterial community composition regardless of the soil layers. Redundancy analysis suggested that litter C/N ratio was the most influential factor explaining functional gene abundances and bacterial communities. Taken together, our findings showed that M. laosensis improved soil N retention capacity mainly through inhibiting autotrophic nitrification while enhancing DNRA activity. This study highlights the importance of tree species identity in influencing the microbially-mediated N cycling and bacterial community composition. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44261]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Shi, Xiuzhen,Wang, Jianqing,Mueller, Christoph,et al. Dissimilatory nitrate reduction to ammonium dominates soil nitrate retention capacity in subtropical forests[J]. BIOLOGY AND FERTILITY OF SOILS,2020,56(6):785-797. |
| APA | Shi, Xiuzhen.,Wang, Jianqing.,Mueller, Christoph.,Hu, Hang-Wei.,He, Ji-Zheng.,...&Huang, Zhiqun.(2020).Dissimilatory nitrate reduction to ammonium dominates soil nitrate retention capacity in subtropical forests.BIOLOGY AND FERTILITY OF SOILS,56(6),785-797. |
| MLA | Shi, Xiuzhen,et al."Dissimilatory nitrate reduction to ammonium dominates soil nitrate retention capacity in subtropical forests".BIOLOGY AND FERTILITY OF SOILS 56.6(2020):785-797. |
入库方式： OAI收割
来源：生态环境研究中心
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