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Deciphering Evolutionary Innovations: Comparative genomics of the origin and loss of venom in marine snails

Project description

Studying the evolution of venom in marine snails

Understanding how traits emerge in organisms is a key challenge in evolutionary biology. With the support of the Marie Skłodowska-Curie Actions programme, the VENORIGN project addresses this by studying venomous marine snails, specifically the Conoidea group, which includes cone snails. These snails have undergone significant evolutionary changes, shifting from non-venomous to venomous. VENORIGN investigates the rapid genomic and morphological changes driving this transition, focusing on the venom toxins responsible. By comparing venomous and non-venomous species, the project will identify the processes behind venom acquisition and loss. The findings will clarify the evolution of venom in these snails and offer a broader understanding of how novel traits evolve across various species, including human pathogens.

Objective

The VENORIGN project aims to understand the evolution of novelty in biology. A major goal of contemporary evolutionary biology is to decipher the molecular basis of major phenotypic innovations in organisms, such as winged flight in birds and echolocation in whales. However, most cases of evolutionary novelty involve complex interactions among multiple genes, each with only minor effects. To address this challenge, we turn to venomous marine snails, specifically the Conoidea group, which includes cone snails and related species. Venom in these snails is linked to a limited set of proteins called toxins, representing the primary genetic changes responsible for the shift from non-venomous to venomous animals. The long-standing interest in cone snail toxins provides a unique context for studying this transition. Yet, the origins of the conoidean venom system and the processes governing multiple venom losses remain poorly understood. This project tests the hypothesis that the origin and loss of conoidean venom resulted from rapid genomic and morphological changes and will investigate these genetic and morphological alterations driving venom's emergence and disappearance. Using cutting-edge methods spanning morphology, taxonomy, genomics, and transcriptomics, we will analyze venomous and non-venomous conoidean and related species. This comprehensive comparison will reveal the processes governing venom acquisition and loss, shedding light on the principles of evolutionary novelty. Our work extends beyond venomous snails, offering a novel model to understand the molecular foundations of significant evolutionary changes. These findings will contribute to our understanding of how novel traits emerge in various biological systems, including human pathogens and agricultural development.

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HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

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(opens in new window) HORIZON-MSCA-2023-PF-01

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Coordinator

UNIVERSITETET I OSLO
Net EU contribution

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€ 210 911,04
Address
PROBLEMVEIEN 5-7
0313 Oslo
Norway

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Region
Norge Oslo og Viken Oslo
Activity type
Higher or Secondary Education Establishments
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Total cost

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