Format

Send to

Choose Destination
Genome Biol Evol. 2019 Apr 1;11(4):1307-1319. doi: 10.1093/gbe/evz075.

Sex Chromosome Turnover in Moths of the Diverse Superfamily Gelechioidea.

Author information

1
Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic.
2
The Pirbright Institute, Surrey, United Kingdom.
3
University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic.
4
Rothamsted Research, Department of Biointeractions and Crop Protection, Herts, United Kingdom.
5
University of Exeter, College of Life and Environmental Sciences, Biosciences, Penryn, Cornwall, United Kingdom.
6
Coconut Research Institute of Sri Lanka, Crop Protection Division, Bandirippuwa Estate, Lunuwila, Sri Lanka.
7
Instituto Nacional de Tecnología Agropecuaria, Instituto de Microbiología y Zoología Agrícola, Hurlingham, Buenos Aires, Argentina.

Abstract

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.

KEYWORDS:

Coleophora ; Depressaria ; Hofmannophila ; Opisina ; Phthorimaea ; Sitotroga

PMID:
31028711
PMCID:
PMC6486803
DOI:
10.1093/gbe/evz075
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Silverchair Information Systems Icon for PubMed Central
Loading ...
Support Center