Evolution of multiple sex-chromosomes associated with dynamic genome reshuffling in Leptidea wood-white butterflies.

Heredity
Atsuo YoshidoFrantišek Marec

Abstract

Sex-chromosome systems tend to be highly conserved and knowledge about their evolution typically comes from macroevolutionary inference. Rapidly evolving complex sex-chromosome systems represent a rare opportunity to study the mechanisms of sex-chromosome evolution at unprecedented resolution. Three cryptic species of wood-white butterflies-Leptidea juvernica, L. sinapis and L. reali-have each a unique set of multiple sex-chromosomes with 3-4 W and 3-4 Z chromosomes. Using a transcriptome-based microarray for comparative genomic hybridisation (CGH) and a library of bacterial artificial chromosome (BAC) clones, both developed in L. juvernica, we identified Z-linked Leptidea orthologs of Bombyx mori genes and mapped them by fluorescence in situ hybridisation (FISH) with BAC probes on multiple Z chromosomes. In all three species, we determined synteny blocks of autosomal origin and reconstructed the evolution of multiple sex-chromosomes. In addition, we identified W homologues of Z-linked orthologs and characterised their molecular differentiation. Our results suggest that the multiple sex-chromosome system evolved in a common ancestor as a result of dynamic genome reshuffling through repeated rearrangements between the sex chromo...Continue Reading

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Citations

Apr 17, 2021·Frontiers in Genetics·Diogo C Cabral-de-MelloFrantišek Marec
Jun 11, 2021·Scientific Reports·Irena ProvazníkováPetr Nguyen
Jun 13, 2021·Genome Biology and Evolution·James J LewisStephen H Montgomery
Jul 27, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Alexandr SemberMarcelo de Bello Cioffi
Dec 18, 2021·Evolution; International Journal of Organic Evolution·Homa Papoli Yazdi

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Methods Mentioned

BETA
electrophoresis
PCR

Software Mentioned

SOAPdenovo
CFX Manager
HaMStR
EvidentialGene
Trimmomatic
FastQC

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