eLife (Oct 2018)

The Aquilegia genome provides insight into adaptive radiation and reveals an extraordinarily polymorphic chromosome with a unique history

  • Danièle L Filiault,
  • Evangeline S Ballerini,
  • Terezie Mandáková,
  • Gökçe Aköz,
  • Nathan J Derieg,
  • Jeremy Schmutz,
  • Jerry Jenkins,
  • Jane Grimwood,
  • Shengqiang Shu,
  • Richard D Hayes,
  • Uffe Hellsten,
  • Kerrie Barry,
  • Juying Yan,
  • Sirma Mihaltcheva,
  • Miroslava Karafiátová,
  • Viktoria Nizhynska,
  • Elena M Kramer,
  • Martin A Lysak,
  • Scott A Hodges,
  • Magnus Nordborg

DOI
https://doi.org/10.7554/eLife.36426
Journal volume & issue
Vol. 7

Abstract

Read online

The columbine genus Aquilegia is a classic example of an adaptive radiation, involving a wide variety of pollinators and habitats. Here we present the genome assembly of A. coerulea ‘Goldsmith’, complemented by high-coverage sequencing data from 10 wild species covering the world-wide distribution. Our analyses reveal extensive allele sharing among species and demonstrate that introgression and selection played a role in the Aquilegia radiation. We also present the remarkable discovery that the evolutionary history of an entire chromosome differs from that of the rest of the genome – a phenomenon that we do not fully understand, but which highlights the need to consider chromosomes in an evolutionary context.

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