Unravelling the microbial mechanisms of soil nitrous oxide emissions

Grant number: DE150100870 | Funding period: 2015 - 2018

Completed

Abstract

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 ..

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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

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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

2019-06-10

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

2018-10-01

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

2018-09-01

Antibiotic resistance is ancient and prevalent in natural ecosystems and evolved long before the utilization of synthetic antibiot..

Nitrogen transformation rates and N2O producing pathways in two pasture soils

Ting Lan, Helen Suter, Rui Liu, Xuesong Gao, Deli Chen

2018-09-01

Purpose: Better understanding of N transformations and the regulation of N2O-related N transformation processes in pasture soil co..

Manipulating the soil microbiome for improved nitrogen management

Hang-Wei Hu, Ji-Zheng He

2018-03-01

<jats:p>The soil microbiome, including bacteria, archaea, fungi, viruses, and other microbial eukaryotes, has crucial roles in the..

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

2018-01-15

Composting has been suggested as a potential strategy to eliminate antibiotic residues and pathogens in livestock manure before it..

Comammox-a newly discovered nitrification process in the terrestrial nitrogen cycle

Hang-Wei Hu, Ji-Zheng He

2017-12-01

Purpose: Nitrification, the microbial oxidation of ammonia to nitrate via nitrite, is a pivotal component of the biogeochemical ni..

Microbial nitrous oxide emissions in dryland ecosystems: mechanisms, microbiome and mitigation

Hang-Wei Hu, Pankaj Trivedi, Ji-Zheng He, Brajesh K Singh

2017-12-01

Globally, drylands represent the largest terrestrial biome and are projected to expand by 23% by the end of this century. Drylands..

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

2017-12-01

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

2017-12-01

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

2017-10-01

Acetylene (C2H2) is an effective nitrification inhibitor targeting autotrophic ammonia oxidizers, and has shown promise for improv..

Harnessing microbiome-based biotechnologies for sustainable mitigation of nitrous oxide emissions

Hang-Wei Hu, Ji-Zheng He, Brajesh K Singh

2017-09-01

Achieving the Sustainable Development Goal of climate change mitigation within this century will require adoption of new innovativ..

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

2017-04-01

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

2017-01-17

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

2017-01-01

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

2016-11-01

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

2016-10-01

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

2016-09-09

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

2016-09-01

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

2016-04-01

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

2016-02-01

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

2015-09-04

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

2015-09-01

The continuous increase of the greenhouse gas nitrous oxide (N2O) in the atmosphere due to increasing anthropogenic nitrogen input..

University of Melbourne Researchers

Hang-Wei Hu Agriculture and Food