دورية أكاديمية
The deep conservation of the Lepidoptera Z chromosome suggests a non-canonical origin of the W
| العنوان: | The deep conservation of the Lepidoptera Z chromosome suggests a non-canonical origin of the W |
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| المؤلفون: | Fraïsse, Christelle, Picard, Marion A. L., Vicoso, Beatriz |
| المصدر: | Nature Communications ; volume 8, issue 1 ; ISSN 2041-1723 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | General Physics and Astronomy, General Biochemistry, Genetics and Molecular Biology, General Chemistry, Multidisciplinary |
| الوصف: | Moths and butterflies (Lepidoptera) usually have a pair of differentiated WZ sex chromosomes. However, in most lineages outside of the division Ditrysia, as well as in the sister order Trichoptera, females lack a W chromosome. The W is therefore thought to have been acquired secondarily. Here we compare the genomes of three Lepidoptera species (one Dytrisia and two non-Dytrisia) to test three models accounting for the origin of the W: (1) a Z-autosome fusion; (2) a sex chromosome turnover; and (3) a non-canonical mechanism (e.g., through the recruitment of a B chromosome). We show that the gene content of the Z is highly conserved across Lepidoptera (rejecting a sex chromosome turnover) and that very few genes moved onto the Z in the common ancestor of the Ditrysia (arguing against a Z-autosome fusion). Our comparative genomics analysis therefore supports the secondary acquisition of the Lepidoptera W by a non-canonical mechanism, and it confirms the extreme stability of well-differentiated sex chromosomes. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1038/s41467-017-01663-5 |
| الإتاحة: | https://doi.org/10.1038/s41467-017-01663-5Test https://www.nature.com/articles/s41467-017-01663-5.pdfTest https://www.nature.com/articles/s41467-017-01663-5Test |
| حقوق: | https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: | edsbas.2B0CBBD1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41467-017-01663-5 |
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