Neo-sex chromosomes and adaptive potential in tortricid pests

0392047 - BC 2014 RIV US eng J - Journal Article
Nguyen, Petr - Sýkorová, Miroslava - Šíchová, Jindra - Kůta, Václav - Dalíková, Martina - Čapková Frydrychová, Radmila - Neven, L. G. - Sahara, K. - Marec, František
Neo-sex chromosomes and adaptive potential in tortricid pests.
Proceedings of the National Academy of Sciences of the United States of America. Roč. 110, č. 17 (2013), s. 6931-6936. ISSN 0027-8424. E-ISSN 1091-6490
R&D Projects: GA ČR GA523/09/2106; GA AV ČR IAA600960925
Grant - others:Building up Modern Biotechnologies for Agriculture project(CZ) FP7-REGPOT-2008-1; Japan Society for the Promotion of Science Grant(JP) 23380030; GA JU(CZ) 137/2010/P; International Atomic Energy Agency, Vienna(AT) Research Agreement 15838
Institutional support: RVO:60077344
Keywords : adaptive evolution * leaf-rollers * performance genes
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 9.809, year: 2013
http://www.pnas.org/content/110/17/6931.full.pdf+html

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. 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.
Permanent Link: http://hdl.handle.net/11104/0222002