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The transposable element-rich genome of the cereal pest Sitophilus oryzae

Nicolas Parisot 1 Carlos Vargas-Chávez 1 Clément Goubert 2 Patrice Baa-Puyoulet 1 Severine Balmand 1 Louis Beranger 1 Caroline Blanc 1 Aymeric Bonnamour 1 Matthieu Boulesteix 2 Nelly Burlet 2 Federica Calevro 1 Patrick Callaerts 3 Théo Chancy 1 Hubert Charles 1, 4 Stefano Colella 1 André da Silva Barbosa 5 Elisa Dell’aglio 1 Alex Di Genova 4 Gérard Febvay 1 Toni Gabaldón 5 Mariana Galvão Ferrarini 1 Alexandra Gerber 6 Benjamin Gillet 7 Robert Hubley 8 Sandrine Hughes 7 Emmanuelle Jacquin-Joly 5 Justin Maire 1 Marina Marcet-Houben 9 Florent Masson 1 Camille Meslin 5 Nicolas Montagné 5 Andrés Moya 10 Ana Tereza Ribeiro de Vasconcelos 6 Gautier Richard 11 Jeb Rosen 8 Marie-France Sagot 4 Arian Smit 8 Jessica Storer 8 Carole Vincent-Monegat 1 Agnès Vallier 1 Aurélien Vigneron 1 Anna Zaidman-Rémy 1 Waël Zamoum 1 Cristina Vieira 2, 4 Rita Rebollo 1 Amparo Latorre 10 Abdelaziz Heddi 1 
Abstract : Background: The rice weevil Sitophilus oryzae is one of the most important agricultural pests, causing extensive damage to cereal in fields and to stored grains. S. oryzae has an intracellular symbiotic relationship (endosymbiosis) with the Gram-negative bacterium Sodalis pierantonius and is a valuable model to decipher host-symbiont molecular interactions. Results: We sequenced the Sitophilus oryzae genome using a combination of short and long reads to produce the best assembly for a Curculionidae species to date. We show that S. oryzae has undergone successive bursts of transposable element (TE) amplification, representing 72% of the genome. In addition, we show that many TE families are transcriptionally active, and changes in their expression are associated with insect endosymbiotic state. S. oryzae has undergone a high gene expansion rate, when compared to other beetles. Reconstruction of hostsymbiont metabolic networks revealed that, despite its recent association with cereal weevils (30 kyear), S. pierantonius relies on the host for several amino acids and nucleotides to survive and to produce vitamins and essential amino acids required for insect development and cuticle biosynthesis.
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Submitted on : Monday, January 3, 2022 - 11:21:59 AM
Last modification on : Saturday, September 24, 2022 - 2:36:04 PM



Nicolas Parisot, Carlos Vargas-Chávez, Clément Goubert, Patrice Baa-Puyoulet, Severine Balmand, et al.. The transposable element-rich genome of the cereal pest Sitophilus oryzae. BMC Biology, BioMed Central, 2021, 19 (1), pp.1-29. ⟨10.1186/s12915-021-01158-2⟩. ⟨hal-03432029⟩



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