Sex Chromosome Turnover in Moths of the Diverse Superfamily Gelechioidea.

Autor:	Carabajal Paladino LZ; Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic.; The Pirbright Institute, Surrey, United Kingdom., Provazníková I; Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic.; University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic., Berger M; Rothamsted Research, Department of Biointeractions and Crop Protection, Herts, United Kingdom., Bass C; University of Exeter, College of Life and Environmental Sciences, Biosciences, Penryn, Cornwall, United Kingdom., Aratchige NS; Coconut Research Institute of Sri Lanka, Crop Protection Division, Bandirippuwa Estate, Lunuwila, Sri Lanka., López SN; Instituto Nacional de Tecnología Agropecuaria, Instituto de Microbiología y Zoología Agrícola, Hurlingham, Buenos Aires, Argentina., Marec F; Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic., Nguyen P; Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic.; University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic.
Jazyk:	angličtina
Zdroj:	Genome biology and evolution [Genome Biol Evol] 2019 Apr 01; Vol. 11 (4), pp. 1307-1319.
DOI:	10.1093/gbe/evz075
Abstrakt:	Sex chromosomes play a central role in genetics of speciation and their turnover was suggested to promote divergence. In vertebrates, sex chromosome-autosome fusions resulting in neo-sex chromosomes occur frequently in male heterogametic taxa (XX/XY), but are rare in groups with female heterogamety (WZ/ZZ). We examined sex chromosomes of seven pests of the diverse lepidopteran superfamily Gelechioidea and confirmed the presence of neo-sex chromosomes in their karyotypes. Two synteny blocks, which correspond to autosomes 7 (LG7) and 27 (LG27) in the ancestral lepidopteran karyotype exemplified by the linkage map of Biston betularia (Geometridae), were identified as sex-linked in the tomato leafminer, Tuta absoluta (Gelechiidae). Testing for sex-linkage performed in other species revealed that while LG7 fused to sex chromosomes in a common ancestor of all Gelechioidea, the second fusion between the resulting neo-sex chromosome and the other autosome is confined to the tribe Gnoreschemini (Gelechiinae). Our data accentuate an emerging pattern of high incidence of neo-sex chromosomes in Lepidoptera, the largest clade with WZ/ZZ sex chromosome system, which suggest that the paucity of neo-sex chromosomes is not an intrinsic feature of female heterogamety. Furthermore, LG7 contains one of the major clusters of UDP-glucosyltransferases, which are involved in the detoxification of plant secondary metabolites. Sex chromosome evolution in Gelechioidea thus supports an earlier hypothesis postulating that lepidopteran sex chromosome-autosome fusions can be driven by selection for association of Z-linked preference or host-independent isolation genes with larval performance and thus can contribute to ecological specialization and speciation of moths. (© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.)
Databáze:	MEDLINE
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