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Insights into the effect of forest-to-pasture conversion and soil moisture on N2O emission and denitrifying community

Grant number: 17/16757-4
Support Opportunities:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): November 01, 2017
Effective date (End): April 30, 2018
Field of knowledge:Biological Sciences - Microbiology
Principal Investigator:Tsai Siu Mui
Grantee:Alexandre Pedrinho
Supervisor: Jorge Luiz Mazza Rodrigues
Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Research place: University of California, Davis (UC Davis), United States  
Associated to the scholarship:17/02635-4 - Microcosms and microbiota activity of the methane and n (N2O) cycle under the influence of moisture in soils from Eastern Amazon, BP.MS


Previous research conducted in the Cell and Molecular Biology Laboratory at the University of São Paulo (Brazil) has demonstrated that forest and pasture soils have different potentials for nitrous oxide emission, enhanced by soil moisture (FAPESP project 2017/02635-4). These findings reinforce the need for a deeper understanding on how this environmental parameter modulates the microbial denitrification process. However, little is still known about the functional and taxonomic profile of the denitrifying microorganisms, and their responses to the most important driver of nitrous oxide flux in tropical soils: moisture. Therefore, we propose to use an integrated approach to characterize the microbial communities that respond to changes in land use and moisture in soils of the Eastern Amazon. This objective will be achieved through (1) determine the effect of land-use change and moisture on the functional and taxonomic profile of the microbial communities involved in the denitrification in soils undergoing forest-to-pasture conversion, and (2) bioinformatics and statistical analysis of data previously obtained in the experiments in Brazil. This proposal is a collaboration with the Soil EcoGenomics Laboratory at the University of California - Davis (USA), under the joint supervision of Prof. Dr. Tsai Siu Mui and Prof. Dr. Jorge L. M. Rodrigues. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PEDRINHO, ALEXANDRE; MENDES, LUCAS WILLIAM; MERLOTI, LUIS FERNANDO; ANDREOTE, FERNANDO DINI; TSAI, SIU MUI. The natural recovery of soil microbial community and nitrogen functions after pasture abandonment in the Amazon region. FEMS MICROBIOLOGY ECOLOGY, v. 96, n. 9, . (17/02635-4, 14/50320-4, 17/16757-4)
PEDRINHO, ALEXANDRE; MENDES, LUCAS WILLIAM; MERLOTI, LUIS FERNANDO; DA FONSECA, MARILEY DE CASSIA; CANNAVAN, FABIANA DE SOUZA; TSAI, SIU MUI. Forest-to-pasture conversion and recovery based on assessment of microbial communities in Eastern Amazon rainforest. FEMS MICROBIOLOGY ECOLOGY, v. 95, n. 3, . (17/16757-4, 14/50320-4)

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