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Introgression shapes fruit color convergence in invasive Galápagos tomato

Invasive species represent one of the foremost risks to global biodiversity. Here, we use population genomics to evaluate the history and consequences of an invasion of wild tomato—Solanum pimpinellifolium—onto the Galápagos Islands from continental South America. Using >300 archipelago and mainl...

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Autores principales: Gibson, Matthew JS, Torres, María de Lourdes, Brandvain, Yaniv, Moyle, Leonie C
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8294854/
https://www.ncbi.nlm.nih.gov/pubmed/34165082
http://dx.doi.org/10.7554/eLife.64165
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author Gibson, Matthew JS
Torres, María de Lourdes
Brandvain, Yaniv
Moyle, Leonie C
author_facet Gibson, Matthew JS
Torres, María de Lourdes
Brandvain, Yaniv
Moyle, Leonie C
author_sort Gibson, Matthew JS
collection PubMed
description Invasive species represent one of the foremost risks to global biodiversity. Here, we use population genomics to evaluate the history and consequences of an invasion of wild tomato—Solanum pimpinellifolium—onto the Galápagos Islands from continental South America. Using >300 archipelago and mainland collections, we infer this invasion was recent and largely the result of a single event from central Ecuador. Patterns of ancestry within the genomes of invasive plants also reveal post-colonization hybridization and introgression between S. pimpinellifolium and the closely related Galápagos endemic Solanum cheesmaniae. Of admixed invasive individuals, those that carry endemic alleles at one of two different carotenoid biosynthesis loci also have orange fruits—characteristic of the endemic species—instead of typical red S. pimpinellifolium fruits. We infer that introgression of two independent fruit color loci explains this observed trait convergence, suggesting that selection has favored repeated transitions of red to orange fruits on the Galápagos.
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spelling pubmed-82948542021-07-23 Introgression shapes fruit color convergence in invasive Galápagos tomato Gibson, Matthew JS Torres, María de Lourdes Brandvain, Yaniv Moyle, Leonie C eLife Evolutionary Biology Invasive species represent one of the foremost risks to global biodiversity. Here, we use population genomics to evaluate the history and consequences of an invasion of wild tomato—Solanum pimpinellifolium—onto the Galápagos Islands from continental South America. Using >300 archipelago and mainland collections, we infer this invasion was recent and largely the result of a single event from central Ecuador. Patterns of ancestry within the genomes of invasive plants also reveal post-colonization hybridization and introgression between S. pimpinellifolium and the closely related Galápagos endemic Solanum cheesmaniae. Of admixed invasive individuals, those that carry endemic alleles at one of two different carotenoid biosynthesis loci also have orange fruits—characteristic of the endemic species—instead of typical red S. pimpinellifolium fruits. We infer that introgression of two independent fruit color loci explains this observed trait convergence, suggesting that selection has favored repeated transitions of red to orange fruits on the Galápagos. eLife Sciences Publications, Ltd 2021-06-24 /pmc/articles/PMC8294854/ /pubmed/34165082 http://dx.doi.org/10.7554/eLife.64165 Text en © 2021, Gibson et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Evolutionary Biology
Gibson, Matthew JS
Torres, María de Lourdes
Brandvain, Yaniv
Moyle, Leonie C
Introgression shapes fruit color convergence in invasive Galápagos tomato
title Introgression shapes fruit color convergence in invasive Galápagos tomato
title_full Introgression shapes fruit color convergence in invasive Galápagos tomato
title_fullStr Introgression shapes fruit color convergence in invasive Galápagos tomato
title_full_unstemmed Introgression shapes fruit color convergence in invasive Galápagos tomato
title_short Introgression shapes fruit color convergence in invasive Galápagos tomato
title_sort introgression shapes fruit color convergence in invasive galápagos tomato
topic Evolutionary Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8294854/
https://www.ncbi.nlm.nih.gov/pubmed/34165082
http://dx.doi.org/10.7554/eLife.64165
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