Hydrological Perturbations Facilitated Phyllosphere Denitrification of an Urban Greening Tree
文献类型：期刊论文
| 作者 | Zhang, Yi-Fang; Lu, Lu; Huang, Fu-Yi; Zhang, Yu ; Li, Xiao-Min; Yang, Lu-Hua; Usman, Muhammad; Kappler, Andreas; Li, Shun
|
| 刊名 | ACS EARTH AND SPACE CHEMISTRY
 |
| 出版日期 | 2022-06-16 |
| 卷号 | 6期号:6页码:1460-1467 |
| 关键词 | NITROGEN-FIXATION COMMUNITY DIVERSITY LINKING SOIL |
| ISSN号 | 2472-3452 |
| 英文摘要 | : In urban ecosystems, nutrient stocks, such as carbon (C), nitrogen (N), and phosphorus (P), are anthropogenically being enriched for material and energy supply. The overloaded nutrients have adverse ecological consequences, such as causing eutrophication of waters and soil in urban areas. Studying the ecophysiology of nutrient-cycling microbes in urban areas is the foundation to explore strategies for removing such excessive nutrients. The phyllosphere is an understudied microbial habitat for examining how the urban microbiome responds to common environmental changes, such as hydrological perturbations. Here, we investigated how successive rainy-sunny cycles within a season affect the genetic potential (gene abundances) for leaf nutrient cycling and particularly the functional potential (enzyme activities) for leaf denitrification of the greening tree Photinia fraseri. Of 41 detected C, N, P, and sulfur (S) cycling genes using high-throughput quantitative polymerase chain reaction, rainfalls only significantly (p < 0.05) increased the abundances of denitrification marker genes nirK and nirS and one C-fixation gene on the phyllosphere while having no significant impacts on other nutrient-cycling genes. The nirK and nirS genes encode nitrite reductases, which catalyze the hallmark step of the denitrification process. Further, a denitrification enzyme activity assay of phyllosphere microbiota showed that, in comparison to sunny weather, rainfalls significantly promoted nitrate reduction (5.48 mu mol of NO3- g-1 h-1; p < 0.001) and N2O production (2.07 nmol of N2O g-1 h-1; p < 0.05) rates, respectively. Together, this study revealed that hydrological perturbations can affect tree phyllosphere denitrification. Understating the ecophysiology of urban phyllosphere denitrifying microbes might be important for developing suitable phylloremediation strategies to attenuate urban N inputs. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47277]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Li, Shun |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 10085, Peoples R China 2.China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Sichuan, Peoples R China 3.Chinese Acad Sci, Ningbo Urban Environm Observat & Res Stn, Ningbo 315800, Zhejiang, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Fujian, Peoples R China 5.Sultan Qaboos Univ, Ctr Environm Studies & Res, PEIE Res Chair Dev Ind Estates & Free Zones, Mu |
| 推荐引用方式 GB/T 7714 | Zhang, Yi-Fang,Lu, Lu,Huang, Fu-Yi,et al. Hydrological Perturbations Facilitated Phyllosphere Denitrification of an Urban Greening Tree[J]. ACS EARTH AND SPACE CHEMISTRY,2022,6(6):1460-1467. |
| APA | Zhang, Yi-Fang.,Lu, Lu.,Huang, Fu-Yi.,Zhang, Yu.,Li, Xiao-Min.,...&Li, Shun.(2022).Hydrological Perturbations Facilitated Phyllosphere Denitrification of an Urban Greening Tree.ACS EARTH AND SPACE CHEMISTRY,6(6),1460-1467. |
| MLA | Zhang, Yi-Fang,et al."Hydrological Perturbations Facilitated Phyllosphere Denitrification of an Urban Greening Tree".ACS EARTH AND SPACE CHEMISTRY 6.6(2022):1460-1467. |
入库方式： OAI收割
来源：生态环境研究中心
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。