RRC ID 22813
Author Nguyen P, Sýkorová M, Šíchová J, Kůta V, Dalíková M, Čapková Frydrychová R, Neven LG, Sahara K, Marec F.
Title Neo-sex chromosomes and adaptive potential in tortricid pests.
Journal Proc Natl Acad Sci U S A
Abstract Changes in genome architecture often have a significant effect on ecological specialization and speciation. This effect may be further enhanced by involvement of sex chromosomes playing a disproportionate role in reproductive isolation. We have physically mapped the Z chromosome of the major pome fruit pest, the codling moth, Cydia pomonella (Tortricidae), and show that it arose by fusion between an ancestral Z chromosome and an autosome corresponding to chromosome 15 in the Bombyx mori reference genome. We further show that the fusion originated in a common ancestor of the main tortricid subfamilies, Olethreutinae and Tortricinae, comprising almost 700 pest species worldwide. The Z-autosome fusion brought two major genes conferring insecticide resistance and clusters of genes involved in detoxification of plant secondary metabolites under sex-linked inheritance. We suggest that this fusion significantly increased the adaptive potential of tortricid moths and thus contributed to their radiation and subsequent speciation.
Volume 110(17)
Pages 6931-6
Published 2013-4-23
DOI 10.1073/pnas.1220372110
PII 1220372110
PMID 23569222
PMC PMC3637691
MeSH Adaptation, Biological / genetics* Animals Base Sequence Chromosomes, Artificial, Bacterial Evolution, Molecular* In Situ Hybridization, Fluorescence Molecular Sequence Data Moths / genetics* Physical Chromosome Mapping Sequence Analysis, DNA Sex Chromosomes / genetics* Translocation, Genetic / genetics*
IF 9.58
Times Cited 62