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Unprecedented reorganization of holocentric chromosomes provides insights into the enigma of lepidopteran chromosome evolution
Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen, Avdelningen för populationsgenetik. Uppsala University, Sweden.
Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen, Avdelningen för populationsgenetik.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Science Advances, E-ISSN 2375-2548, Vol. 5, nr 6, artikkel-id eaau3648Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Chromosome evolution presents an enigma in the mega-diverse Lepidoptera. Most species exhibit constrained chromosome evolution with nearly identical haploid chromosome counts and chromosome-level gene collinearity among species more than 140 million years divergent. However, a few species possess radically inflated chromosomal counts due to extensive fission and fusion events. To address this enigma of constraint in the face of an exceptional ability to change, we investigated an unprecedented reorganization of the standard lepidopteran chromosome structure in the green-veined white butterfly (Pieris napi). We find that gene content in P. napi has been extensively rearranged in large collinear blocks, which until now have been masked by a haploid chromosome number close to the lepidopteran average. We observe that ancient chromosome ends have been maintained and collinear blocks are enriched for functionally related genes suggesting both a mechanism and a possible role for selection in determining the boundaries of these genome-wide rearrangements.

sted, utgiver, år, opplag, sider
2019. Vol. 5, nr 6, artikkel-id eaau3648
HSV kategori
Forskningsprogram
zoologi
Identifikatorer
URN: urn:nbn:se:su:diva-169763DOI: 10.1126/sciadv.aau3648ISI: 000473798500007OAI: oai:DiVA.org:su-169763DiVA, id: diva2:1325548
Forskningsfinansiär
Wallenberg Foundations, 2012-3715, 2010-5341, 621-2012-4001Swedish Research Council, 2012.0058Tilgjengelig fra: 2019-06-16 Laget: 2019-06-16 Sist oppdatert: 2020-01-23bibliografisk kontrollert

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Hill, JasonNeethiraj, Ramprasadde la Paz Celorio-Mancera, MariaDircksen, HeinrichKeehnen, NaomiPruisscher, PeterWiklund, ChristerWoronik, AlyssaNylin, SörenWheat, Christopher W.
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