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Transcriptional differences between the two host strains of Spodoptera frugiperda (Lepidoptera: Noctuidae)

View ORCID ProfileMarion Orsucci, View ORCID ProfileYves Moné, Philippe Audiot, Sylvie Gimenez, Sandra Nhim, Rima Naït-Saïdi, Marie Frayssinet, Guillaume Dumont, Jean-Paul Boudon, Marin Vabre, View ORCID ProfileStéphanie Rialle, Rachid Koual, View ORCID ProfileGael J. Kergoat, View ORCID ProfileRodney N. Nagoshi, View ORCID ProfileRobert L. Meagher, View ORCID ProfileEmmanuelle d’Alençon, View ORCID ProfileNicolas Nègre
doi: https://doi.org/10.1101/263186
Marion Orsucci
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
2CBGP, INRAE, IRD, CIRAD, Institut Agro, Univ Montpellier, Montpellier, France
§Department of Plant Biology, Swedish University of Agricultural Sciences, Uppsala BioCenter and Linnean Centre for Plant Biology, 75007 Uppsala, Sweden
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  • ORCID record for Marion Orsucci
Yves Moné
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
#Department of Microbiology & Immunology, Center for Advanced Microbial Processing, Drexel University College of Medicine, 245 N. 15th Street, Philadelphia, PA, 19102, USA
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Philippe Audiot
2CBGP, INRAE, IRD, CIRAD, Institut Agro, Univ Montpellier, Montpellier, France
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Sylvie Gimenez
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Sandra Nhim
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Rima Naït-Saïdi
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Marie Frayssinet
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Guillaume Dumont
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Jean-Paul Boudon
3UE Diascope, INRAE, 34130 Mauguio, France
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Marin Vabre
3UE Diascope, INRAE, 34130 Mauguio, France
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Stéphanie Rialle
4MGX, Univ Montpellier, CNRS, INSERM, Montpellier, France
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  • ORCID record for Stéphanie Rialle
Rachid Koual
4MGX, Univ Montpellier, CNRS, INSERM, Montpellier, France
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Gael J. Kergoat
2CBGP, INRAE, IRD, CIRAD, Institut Agro, Univ Montpellier, Montpellier, France
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Rodney N. Nagoshi
5CMAVE USDA-ARS, Gainesville, Florida, USA
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Robert L. Meagher
5CMAVE USDA-ARS, Gainesville, Florida, USA
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Emmanuelle d’Alençon
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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Nicolas Nègre
1DGIMI, Univ Montpellier, INRAE, Montpellier, France
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  • ORCID record for Nicolas Nègre
  • For correspondence: nicolas.negre@umontpellier.fr
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Abstract

Spodoptera frugiperda, the fall armyworm (FAW), is an important agricultural pest in the Americas and an emerging pest in sub-Saharan Africa, India, East-Asia and Australia, causing damage to major crops such as corn, sorghum and soybean. While FAW larvae are considered polyphagous, differences in diet preference have been described between two genetic variants: the corn strain (sf-C) and the rice strain (sf-R). These two strains are sometimes considered as distinct species, raising the hypothesis that ost plant specialization might have driven their divergence. To test this hypothesis, we irst performed controlled reciprocal transplant (RT) experiments to address the impact of plant diet on several traits linked to the fitness of the sf-C and sf-R strains. The phenotypical data suggest that sf-C is specialized to corn. We then used RNA-Se to identify constitutive transcriptional differences between strains, regardless of diet, in laboratory as well as in natural populations. We found that variations in mitochon rial transcription levels are among the most substantial and consistent differences between the two strains. Since mitochondrial genotypes also vary between the strains, we believe the mitochondria may have a significant role in driving strain divergence.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • Version 2 of this preprint has been peer-reviewed and recommended by Peer Community In Evolutionary Biology (https://doi.org/10.24072/pci.evolbiol.100102)

  • http://doi.org/10.24072/pci.evolbiol.100102

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted June 24, 2020.
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Transcriptional differences between the two host strains of Spodoptera frugiperda (Lepidoptera: Noctuidae)
Marion Orsucci, Yves Moné, Philippe Audiot, Sylvie Gimenez, Sandra Nhim, Rima Naït-Saïdi, Marie Frayssinet, Guillaume Dumont, Jean-Paul Boudon, Marin Vabre, Stéphanie Rialle, Rachid Koual, Gael J. Kergoat, Rodney N. Nagoshi, Robert L. Meagher, Emmanuelle d’Alençon, Nicolas Nègre
bioRxiv 263186; doi: https://doi.org/10.1101/263186
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Transcriptional differences between the two host strains of Spodoptera frugiperda (Lepidoptera: Noctuidae)
Marion Orsucci, Yves Moné, Philippe Audiot, Sylvie Gimenez, Sandra Nhim, Rima Naït-Saïdi, Marie Frayssinet, Guillaume Dumont, Jean-Paul Boudon, Marin Vabre, Stéphanie Rialle, Rachid Koual, Gael J. Kergoat, Rodney N. Nagoshi, Robert L. Meagher, Emmanuelle d’Alençon, Nicolas Nègre
bioRxiv 263186; doi: https://doi.org/10.1101/263186

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