Abstract
The fall armyworm Spodoptera frugiperda is an important polyphagous agricultural pest in the Western Hemisphere and currently invasive to countries of the Eastern Hemisphere. This species has two host-adapted strains named “rice” and “corn” strains. Our goal was to identify the occurrence of core members in the gut bacterial community of fall armyworm larvae from distinct geographical distribution and/or host strain. We used next-generation sequencing to identify the microbial communities of S. frugiperda from corn fields in Brazil, Colombia, Mexico, Panama, Paraguay, and Peru, and rice fields from Panama. The larval gut microbiota of S. frugiperda larvae did not differ between the host strains nor was it affected by the geographical distribution of the populations investigated. Our findings provide additional support for Enterococcus and Pseudomonas as core members of the bacterial community associated with the larval gut of S. frugiperda, regardless of the site of collection or strain. Further investigations are required for a deeper understanding of the nature of this relationship.
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Acknowledgements
We are grateful to the São Paulo Research Foundation (FAPESP) (process 2011/50877-0) and the Ministry of Science, Technology and Innovation (Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq: process 403851/2013-0 and 462140-2014/8) for the grant provided to the senior author. The HPC resources made available by the Superintendence of Information Technology of the University of São Paulo. We also thank FAPESP for the PhD student fellowship (2017/24377-7) provided to the first author. We also would like to thank our collaborators from Panama, Peru, Colombia, Paraguay, and Brazil who helped us with the field collection of larval samples. This manuscript is one of the chapters of the PhD Thesis of the first author.
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This research was financed by the São Paulo Research Foundation (FAPESP) (process 2011/50877–0) and the Ministry of Science, Technology and Innovation (Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq: process 403851/2013–0 and 462140–2014/8).
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Nathalia Cavichiolli de Oliveira and Fernando Luís Cônsoli conceived the study and designed the experiment. NCO processed the samples. NCO and Pedro Augusto da Pos Rodrigues conducted the bioinformatics. FLC secured funds for the project. NCO wrote the first draft of the manuscript and PAPR and FLC revised and edited the initial draft. NCO, PAPR, and FLC approved the final version for publication.
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Oliveira, N.C., Rodrigues, P.A.P. & Cônsoli, F.L. Host-Adapted Strains of Spodoptera frugiperda Hold and Share a Core Microbial Community Across the Western Hemisphere. Microb Ecol 85, 1552–1563 (2023). https://doi.org/10.1007/s00248-022-02008-6
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DOI: https://doi.org/10.1007/s00248-022-02008-6