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Title: The genome sequence of the grape phylloxera provides insights into the evolution, adaptation, and invasion routes of an iconic pest
Author: Rispe, Claude
Legeai, Fabrice
Nabity, Paul D.
Fernández, Rosa
Arora, Arinder K
Baa Puyoulet, Patrice
Banfill, Celeste R
Bao, Leticia
Barberà, Miquel
Bouallègue, Maryem
Bretaudeau, Anthony
Brisson, Jennifer A
Calevro, Federica
Capy, Pierre
Catrice, Olivier
Chertemps, Thomas
Couture, Carole
Delière, Laurent
Douglas, Angela E.
Dufault Thompson, Keith
Escuer Pifarré, Paula
Feng, Honglin
Forneck, Astrid
Gabaldón, Toni
Guigó, Roderic
Hilliou, Frédérique
Hinojosa-Alvarez, Silvia
Hsiao, Yi-Min
Hudaverdian, Sylvie
Jacquin-Joly, Emmanuelle
James, Edward B.
Johnston, Spencer
Joubard, Benjamin
Le Goff, Gaëlle
Le Trionnaire, Gaël
Librado, Pablo
Liu, Shanlin
Sanchez Herrero, José Francisco
Sánchez-Gracia, Alejandro
Rozas Liras, Julio A.
Keywords: Plagues d'insectes
Insect pests
Issue Date: 23-Jul-2020
Publisher: BioMed Central
Abstract: Background: Although native to North America, the invasion of the aphid-like grape phylloxera Daktulosphaira vitifoliae across the globe altered the course of grape cultivation. For the past 150 years, viticulture relied on grafting-resistant North American Vitis species as rootstocks, thereby limiting genetic stocks tolerant to other stressors such as pathogens and climate change. Limited understanding of the insect genetics resulted in successive outbreaks across the globe when rootstocks failed. Here we report the 294-Mb genome of D. vitifoliae as a basic tool to understand host plant manipulation, nutritional endosymbiosis, and enhance global viticulture. Results: Using a combination of genome, RNA, and population resequencing, we found grape phylloxera showed high duplication rates since its common ancestor with aphids, but similarity in most metabolic genes, despite lacking obligate nutritional symbioses and feeding from parenchyma. Similarly, no enrichment occurred in development genes in relation to viviparity. However, phylloxera evolved > 2700 unique genes that resemble putative effectors and are active during feeding. Population sequencing revealed the global invasion began from the upper Mississippi River in North America, spread to Europe and from there to the rest of the world. Conclusions: The grape phylloxera genome reveals genetic architecture relative to the evolution of nutritional endosymbiosis, viviparity, and herbivory. The extraordinary expansion in effector genes also suggests novel adaptations to plant feeding and how insects induce complex plant phenotypes, for instance galls. Finally, our understanding of the origin of this invasive species and its genome provide genetics resources to alleviate rootstock bottlenecks restricting the advancement of viticulture.
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It is part of: Bmc Biology, 2020, vol. 18, num. 90
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ISSN: 1741-7007
Appears in Collections:Articles publicats en revistes (Genètica, Microbiologia i Estadística)

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