Unravelling the microbial mechanisms of soil nitrous oxide emissions
Grant number: DE150100870 | Funding period: 2015 - 2018
Soil ecosystems are believed to be the most dominant sources of global nitrous oxide emissions. However, mitigations of nitrous oxide are strongly hindered by lack of knowledge on microbial mechanisms underpinning its production. This project aims to integrate a range of advanced approaches to identify the key nitrogen cycling genes as best predictors of nitrous oxide in field studies, to disentangle relative contribution of microbial pathways to nitrous oxide in glasshouse and microcosm studies, and to validate these findings across various land-use types in Australia and China. This will provide a critical framework incorporating microbial data into the nitrous oxide prediction models for ..View full description
Related publications (24)
Stimulation of heterotrophic nitrification and N2O production, inhibition of autotrophic nitrification in soil by adding readily degradable carbon
Ting Lan, Rui Liu, Helen Suter, Ouping Deng, Xuesong Gao, Ling Luo, Shu Yuan, Changquan Wang, Deli Chen
Purpose: This study aimed to test the hypothesis that readily degradable Carbon (C) has contrasting effect on soil N autotrophic a..
Salinity as a predominant factor modulating the distribution patterns of antibiotic resistance genes in ocean and river beach soils
Yu-Jing Zhang, Hang-Wei Hu, Hui Yan, Jun-Tao Wang, Shu Kee Lam, Qing-Lin Chen, Deli Chen, Ji-Zheng He
Growing evidence points to the pivotal role of the environmental factors in influencing the transmission of antibiotic resistance ..
Effects of nitrification inhibitors on gross N nitrification rate, ammonia oxidizers, and N2O production under different temperatures in two pasture soils
Ting Lan, Helen Suter, Rui Liu, Shu Yuan, Deli Chen
Australian pasture soil for cattle and sheep industries constitutes the principal land use with considerable N fertilizer consumpt..
Diversity of herbaceous plants and bacterial communities regulates soil resistome across forest biomes
Hang-Wei Hu, Jun-Tao Wang, Brajesh K Singh, Yu-Rong Liu, Yong-Liang Chen, Yu-Jing Zhang, Ji-Zheng He
Antibiotic resistance is ancient and prevalent in natural ecosystems and evolved long before the utilization of synthetic antibiot..
Aerobic composting reduces antibiotic resistance genes in cattle manure and the resistome dissemination in agricultural soils
Min Gou, Hang-Wei Hu, Yu-Jing Zhang, Jun-Tao Wang, Helen Hayden, Yue-Qin Tang, Ji-Zheng He
Composting has been suggested as a potential strategy to eliminate antibiotic residues and pathogens in livestock manure before it..
Nitrifier-induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4-dimethylpyrazole phosphate
Xiuzhen Shi, Hang-Wei Hu, Xia Zhu-Barker, Helen Hayden, Juntao Wang, Helen Suter, Deli Chen, Ji-Zheng He
Soil ecosystem represents the largest contributor to global nitrous oxide (N2 O) production, which is regulated by a wide variety ..
Temporal succession of soil antibiotic resistance genes following application of swine, cattle and poultry manures spiked with or without antibiotics
Yu-Jing Zhang, Hang-Wei Hu, Min Gou, Jun-Tao Wang, Deli Chen, Ji-Zheng He
Land application of animal manure is a common agricultural practice potentially leading to dispersal and propagation of antibiotic..
Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions
Rui Liu, Helen L Hayden, Hangwei Hu, Jizheng He, Helen Suter, Deli Chen
Acetylene (C2H2) is an effective nitrification inhibitor targeting autotrophic ammonia oxidizers, and has shown promise for improv..
Response of ammonia oxidizers and denitrifiers to repeated applications of a nitrification inhibitor and a urease inhibitor in two pasture soils
Xiuzhen Shi, Hang-Wei Hu, Kevin Kelly, Deli Chen, Ji-Zheng He, Helen Suter
Purpose: The nitrification inhibitor 3,4-dimethylpyrazol-phosphate (DMPP) and the urease inhibitor N-(n-butyl) thiophosphoric tria..
Long-Term Nickel Contamination Increases the Occurrence of Antibiotic Resistance Genes in Agricultural Soils
Hang-Wei Hu, Jun-Tao Wang, Jing Li, Xiu-Zhen Shi, Yi-Bing Ma, Deli Chen, Ji-Zheng He
Heavy metal contamination is assumed to be a selection pressure on antibiotic resistance, but to our knowledge, evidence of the he..
The effect of temperature and moisture on the source of N2O and contributions from ammonia oxidizers in an agricultural soil
Rui Liu, Helen L Hayden, Helen Suter, Hangwei Hu, Shu Kee Lam, Jizheng He, Pauline M Mele, Deli Chen
In recent years, identification of the microbial sources responsible for soil NâO production has substantially advanced with the..
Field-based evidence for copper contamination induced changes of antibiotic resistance in agricultural soils
Hang-Wei Hu, Jun-Tao Wang, Jing Li, Jun-Jian Li, Yi-Bing Ma, Deli Chen, Ji-Zheng He
Bacterial resistance to antibiotics and heavy metals are frequently linked, suggesting that exposure to heavy metals might select ..
Effects of 3,4-dimethylpyrazole phosphate (DMPP) on nitrification and the abundance and community composition of soil ammonia oxidizers in three land uses
Xiuzhen Shi, Hangwei Hu, Jizheng He, Deli Chen, Helen Charlotte Suter
The application of the nitrification inhibitor, 3,4-dimethylpyrazole-phosphate (DMPP), is considered as an effective strategy to m..
Nitrification Is a Primary Driver of Nitrous Oxide Production in Laboratory Microcosms from Different Land-Use Soils
Rui Liu, Hangwei Hu, Helen Suter, Helen L Hayden, Jizheng He, Pauline Mele, Deli Chen
Most studies on soil N2O emissions have focused either on the quantifying of agricultural N2O fluxes or on the effect of environme..
Effects of the Nitrification Inhibitor 3,4-Dimethylpyrazole Phosphate on Nitrification and Nitrifiers in Two Contrasting Agricultural Soils
Xiuzhen Shi, Hang-Wei Hu, Christoph Mueller, Ji-Zheng He, Deli Chen, Helen Charlotte Suter
UNLABELLED: The nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) is a powerful tool that can be used to promote nitro..
Impacts of reclaimed water irrigation on soil antibiotic resistome in urban parks of Victoria, Australia
Xue-Mei Han, Hang-Wei Hu, Xiu-Zhen Shi, Jun-Tao Wang, Li-Li Han, Deli Chen, Ji-Zheng He
UNLABELLED: The effluents from wastewater treatment plants have been recognized as a significant environmental reservoir of antibi..
Temporal changes of antibiotic-resistance genes and bacterial communities in two contrasting soils treated with cattle manure
Hang-Wei Hu, Xue-Mei Han, Xiu-Zhen Shi, Jun-Tao Wang, Li-Li Han, Deli Chen, Ji-Zheng He
The emerging environmental spread of antibiotic-resistance genes (ARGs) and their subsequent acquisition by clinically relevant mi..
The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance, and climatic factors
Hang-Wei Hu, Li-Mei Zhang, Chao-Lei Yuan, Yong Zheng, Jun-Tao Wang, Deli Chen, Ji-Zheng He
Paddy soils distribute widely from temperate to tropical regions, and are characterized by intensive nitrogen fertilization practi..
Microbial regulation of terrestrial nitrous oxide formation: understanding the biological pathways for prediction of emission rates
Hang-Wei Hu, Deli Chen, Ji-Zheng He
The continuous increase of the greenhouse gas nitrous oxide (N2O) in the atmosphere due to increasing anthropogenic nitrogen input..