The core root microbiome of sugarcanes cultivated under varying nitrogen fertiliser application.

Yeoh, Yun Kit, Paungfoo-Lonhienne, Chanyarat, Dennis, Paul G., Robinson, Nicole, Ragan, Mark A., Schmidt, Susanne and Hugenholtz, Philip (2015) The core root microbiome of sugarcanes cultivated under varying nitrogen fertiliser application.. Environmental Microbiology, 18 5: 1338-1351. doi:10.1111/1462-2920.12925

Author Yeoh, Yun Kit
Paungfoo-Lonhienne, Chanyarat
Dennis, Paul G.
Robinson, Nicole
Ragan, Mark A.
Schmidt, Susanne
Hugenholtz, Philip
Title The core root microbiome of sugarcanes cultivated under varying nitrogen fertiliser application.
Journal name Environmental Microbiology   Check publisher's open access policy
ISSN 1462-2912
Publication date 2015-06-01
Year available 2015
Sub-type Article (original research)
DOI 10.1111/1462-2920.12925
Open Access Status Not Open Access
Volume 18
Issue 5
Start page 1338
End page 1351
Total pages 14
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
Diazotrophic bacteria potentially supply substantial amounts of biologically fixed nitrogen to crops, but their occurrence may be suppressed by high nitrogen fertiliser application. Here, we explored the impact of high nitrogen fertiliser rates on the presence of diazotrophs in field-grown sugarcane with industry-standard or reduced nitrogen fertiliser application. Despite large differences in soil microbial communities between test sites, a core sugarcane root microbiome was identified. The sugarcane root enriched core taxa overlap with those of Arabidopsis thaliana raising the possibility that certain bacterial families have had long association with plants. Reduced nitrogen fertiliser application did not increase the relative abundance of root-associated diazotrophs or nif gene counts. Correspondingly, low nitrogen fertiliser crops had low biomass and nitrogen content reflecting a lack of major input of biologically fixed nitrogen, indicating that manipulating nitrogen fertiliser rates does not improve sugarcane yields by enriching diazotrophic populations under the test conditions. Standard nitrogen fertiliser crops had improved biomass and nitrogen content, and corresponding soils had higher abundances of nitrification and denitrification genes. These findings highlight that achieving a balance in maximising crop yields and minimising nutrient pollution associated with nitrogen fertiliser application requires understanding of how microbial communities responds to fertiliser use.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes epub ahead of print

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Created: Fri, 05 Jun 2015, 19:48:39 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences