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 (5)

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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..

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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 ..

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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..

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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..

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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..

University of Melbourne Researchers