PMID- 17103220 OWN - NLM STAT- MEDLINE DCOM- 20080108 LR - 20181113 IS - 0009-5915 (Print) IS - 0009-5915 (Linking) VI - 116 IP - 2 DP - 2007 Apr TI - Probing the W chromosome of the codling moth, Cydia pomonella, with sequences from microdissected sex chromatin. PG - 135-45 AB - The W chromosome of the codling moth, Cydia pomonella, like that of most Lepidoptera species, is heterochromatic and forms a female-specific sex chromatin body in somatic cells. We collected chromatin samples by laser microdissection from euchromatin and W-chromatin bodies. DNA from the samples was amplified by degenerate oligonucleotide-primed polymerase chain reaction (DOP-PCR) and used to prepare painting probes and start an analysis of the W-chromosome sequence composition. With fluorescence in situ hybridization (FISH), the euchromatin probe labelled all chromosomes, whereas the W-chromatin DNA proved to be a highly specific W-chromosome painting probe. For sequence analysis, DOP-PCR-generated DNA fragments were cloned, sequenced, and tested by Southern hybridization. We recovered single-copy and low-copy W-specific sequences, a sequence that was located only in the W and the Z chromosome, multi-copy sequences that were enriched in the W chromosome but occurred also elsewhere, and ubiquitous multi-copy sequences. Three of the multi-copy sequences were recognized as derived from hitherto unknown retrotransposons. The results show that our approach is feasible and that the W-chromosome composition of C. pomonella is not principally different from that of Bombyx mori or from that of Y chromosomes of several species with an XY sex-determining mechanism. The W chromosome has attracted repetitive sequences during evolution but also contains unique sequences. FAU - Fukova, Iva AU - Fukova I AD - Institute of Entomology, Biology Centre, ASCR, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic. FAU - Traut, Walther AU - Traut W FAU - Vitkova, Magda AU - Vitkova M FAU - Nguyen, Petr AU - Nguyen P FAU - Kubickova, Svatava AU - Kubickova S FAU - Marec, Frantisek AU - Marec F LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20061114 PL - Austria TA - Chromosoma JT - Chromosoma JID - 2985138R RN - 0 (DNA Primers) RN - 0 (Molecular Probes) RN - 0 (Oligonucleotides) SB - IM MH - Animals MH - Base Sequence MH - Blotting, Southern MH - Chromosome Painting/methods MH - DNA Primers MH - In Situ Hybridization, Fluorescence MH - Microdissection MH - Molecular Probes/genetics/*metabolism MH - Molecular Sequence Data MH - Moths/*genetics MH - Oligonucleotides MH - Polymerase Chain Reaction MH - Sequence Analysis, DNA MH - Sex Chromatin/genetics/*metabolism/ultrastructure MH - Sex Chromosomes/*genetics MH - Species Specificity EDAT- 2006/11/15 09:00 MHDA- 2008/01/09 09:00 CRDT- 2006/11/15 09:00 PHST- 2006/08/07 00:00 [received] PHST- 2006/10/04 00:00 [accepted] PHST- 2006/10/02 00:00 [revised] PHST- 2006/11/15 09:00 [pubmed] PHST- 2008/01/09 09:00 [medline] PHST- 2006/11/15 09:00 [entrez] AID - 10.1007/s00412-006-0086-0 [doi] PST - ppublish SO - Chromosoma. 2007 Apr;116(2):135-45. doi: 10.1007/s00412-006-0086-0. Epub 2006 Nov 14.