Two genomes of highly polyphagous lepidopteran pests (Spodoptera frugiperda, Noctuidae) with different host-plant ranges

Anaïs Gouin 1 Anthony Bretaudeau 2 Kiwoong Nam 3 Sylvie Gimenez 3 Jean-Marc Aury 4, 5 Bernard Duvic 3 Frederique Hilliou 6 Nicolas Durand 7 Nicolas Montagné 8 Isabelle Darboux 3 Suyog Kuwar 9 Thomas Chertemps 10 David Siaussat 10 Anne Bretschneider 9 Yves Moné 3 Seung-Joon Ahn 9 Sabine Hänniger 9 Anne-Sophie Gosselin Grenet 3 David Neunemann 9 Florian Maumus 11 Isabelle Luyten 11 Karine Labadie 5 Wei Xu 12 Fotini Koutroumpa 13 Jean-Michel Escoubas 3 Angel Llopis 14 Martine Maïbèche-Coisne 8 Fanny Salasc 3 Archana Tomar 15 Alisha Anderson 16 Sher Khan 9 Pascaline Dumas 17 Marion Orsucci 3 Julie Guy 5 Caroline Belser 5 Adriana Alberti 5 Benjamin Noel 5 Arnaud Couloux 5 Jonathan Mercier 5 Sabine Nidelet 18 Emeric Dubois 18 Nai-Yong Liu 19 Isabelle Boulogne 8 Olivier Mirabeau 13 Gaelle Le Goff 6 Karl Gordon 20 John Oakeshott 20 Fernando Consoli 21 Anne-Nathalie Volkoff 3 Howard Fescemyer 22 James Marden 22 Dawn Luthe 22 Salvador Herrero 14 David Heckel 9 Patrick Wincker 5 Gael Kergoat 13 Joelle Amselem 11 Hadi Quesneville 11 Astrid Groot 9 Emmanuelle Jacquin-Joly 13 Nicolas Nègre 3 Claire Lemaitre 1 Fabrice Legeai 1 Emmanuelle D’alençon 3 Philippe Fournier 3
1 GenScale - Scalable, Optimized and Parallel Algorithms for Genomics
Inria Rennes – Bretagne Atlantique , IRISA_D7 - GESTION DES DONNÉES ET DE LA CONNAISSANCE
2 Plateforme bioinformatique GenOuest [Rennes]
UR1 - Université de Rennes 1, Plateforme Génomique Santé Biogenouest®, Inria Rennes – Bretagne Atlantique , IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires
3 DGIMI - Diversité, Génomes & Interactions Microorganismes - Insectes [Montpellier]
4 CEA - Commissariat à l'énergie atomique et aux énergies alternatives
5 GENOSCOPE - Genoscope - Centre national de séquençage [Evry]
6 ISA - Institut Sophia Agrobiotech [Sophia Antipolis]
7 LSIS - Laboratoire des Sciences de l'Information et des Systèmes
8 Sorbonne Universités
9 Max Planck Institute for Chemical Ecology
10 IEES - Institut d'écologie et des sciences de l'environnement de Paris
11 URGI - Unité de Recherche Génomique Info
12 School of Veterinary and Life Sciences [Murdoch]
13 INRA - Institut National de la Recherche Agronomique
14 Universidad Politécnica de Valencia
15 CDFD - Centre for DNA Fingerprinting and Diagnostics
16 CSIRO Ecosystem Sciences
17 IBED - Institute for Biodiversity and Ecosystem Dynamics
18 IGF - Institut de Génomique Fonctionnelle
19 SWFU - Southwest Forestry University
20 CSIRO - Commonwealth Scientific and Industrial Research Organisation [Canberra]
21 USP - Universidade de São Paulo
22 PSU - Pennsylvania State University [Pennsylvania]
Abstract : Emergence of polyphagous herbivorous insects entails significant adaptation to recognize, detoxify and digest a variety of host-plants. Despite of its biological and practical importance - since insects eat 20% of crops - no exhaustive analysis of gene repertoires required for adaptations in generalist insect herbivores has previously been performed. The noctuid moth Spodoptera frugiperda ranks as one of the world’s worst agricultural pests. This insect is polyphagous while the majority of other lepidopteran herbivores are specialist. It consists of two morphologically indistinguishable strains (“C” and “R”) that have different host plant ranges. To describe the evolutionary mechanisms that both enable the emergence of polyphagous herbivory and lead to the shift in the host preference, we analyzed whole genome sequences from laboratory and natural populations of both strains. We observed huge expansions of genes associated with chemosensation and detoxification compared with specialist Lepidoptera. These expansions are largely due to tandem duplication, a possible adaptation mechanism enabling polyphagy. Individuals from natural C and R populations show significant genomic differentiation. We found signatures of positive selection in genes involved in chemoreception, detoxification and digestion, and copy number variation in the two latter gene families, suggesting an adaptive role for structural variation.
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Article dans une revue
Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.1-12. 〈10.1038/s41598-017-10461-4〉
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Anaïs Gouin, Anthony Bretaudeau, Kiwoong Nam, Sylvie Gimenez, Jean-Marc Aury, et al.. Two genomes of highly polyphagous lepidopteran pests (Spodoptera frugiperda, Noctuidae) with different host-plant ranges. Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.1-12. 〈10.1038/s41598-017-10461-4〉. 〈hal-01633879〉

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