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High-throughput sequencing of a single chromosome: a moth W chromosome

MPG-Autoren
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Vogel,  Heiko
Department of Entomology, Prof. D. G. Heckel, MPI for Chemical Ecology, Max Planck Society;

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Heckel,  David G.
Department of Entomology, Prof. D. G. Heckel, MPI for Chemical Ecology, Max Planck Society;

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Zitation

Traut, W., Vogel, H., Glöckner, G., Hartmann, E., & Heckel, D. G. (2013). High-throughput sequencing of a single chromosome: a moth W chromosome. Chromosome Research, 21, 491-505. doi:10.1007/s10577-013-9376-6.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0014-461A-1
Zusammenfassung
Y and W chromosomes have mostly been excluded from whole genome sequencing projects. Due to the high amount of repetitive sequences they are ‘difficult’ to assemble and therefore need special treatment in the form of, e.g. adapted assembly programs, a range of different libraries, and accurate maps, if possible. A minimum requirement for these approaches is pure template DNA. We therefore microdissected the W chromatin of highly polyploid cells from the flour moth, Ephestia kuehniella, and used Roche/454 and Sanger sequencing to generate 72.6 Mbp of DNA sequence. Nominal coverage was 4.3× of the 16.7 Mbp of W chromosomal DNA. We used these data to assess the genetic content of the W chromosome. This approach allowed us to determine constituent families of transposable elements, microsatellites, and recent insertion sites of mitochondrial DNA. However, no conventional protein-coding gene has yet been found. The sequence collection is a rich source for the definition of W-specific PCR markers and the reconstruction of W chromosome loci, as a step towards full reconstruction of the chromosome.