The Aquilegia genome: adaptive radiation and an extraordinarily polymorphic chromosome with a unique history

Filiault, D.; Ballerini, E.; Mandakova, T.; Akoz, G.; Derieg, N.; Schmutz, J.; Jenkins, J.; Grimwood, J.; Shu, S.; Hayes, R.; Hellsten, U.; Barry, K.; Yan, J.; Mihaltcheva, S.; Karafiatova, M.; Nizhynska, V.; Lysak, M.; Hodges, S.; Nordborg, M.

doi:10.1101/264101

bioRxiv · 10.1101/264101

The Aquilegia genome: adaptive radiation and an extraordinarily polymorphic chromosome with a unique history

Filiault, D.·Ballerini, E.·Mandakova, T.·Akoz, G.·Derieg, N.·Schmutz, J.·Jenkins, J.·Grimwood, J.·Shu, S.·Hayes, R.·Hellsten, U.·Barry, K.·Yan, J.·Mihaltcheva, S.·Karafiatova, M.·Nizhynska, V.·Lysak, M.·Hodges, S.·Nordborg, M.

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Abstract

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 which we do not fully understand, but which highlights the need to consider chromosomes in an evolutionary context.

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Filiault, D., Ballerini, E., Mandakova, T., Akoz, G., Derieg, N., Schmutz, J., Jenkins, J., Grimwood, J., Shu, S., Hayes, R., Hellsten, U., Barry, K., Yan, J., Mihaltcheva, S., Karafiatova, M., Nizhynska, V., Lysak, M., Hodges, S., Nordborg, M.. 2018-02-12. The Aquilegia genome: adaptive radiation and an extraordinarily polymorphic chromosome with a unique history. https://doi.org/10.1101/264101

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