A New Nomenclature of Xenopus laevis Chromosomes Based on the Phylogenetic Relationship to Silurana/Xenopus tropicalis
Please always quote using this URN: urn:nbn:de:bvb:20-opus-196748
- Xenopus laevis (XLA) is an allotetraploid species which appears to have undergone whole-genome duplication after the interspecific hybridization of 2 diploid species closely related to Silurana/Xenopus tropicalis (XTR). Previous cDNA fluorescence in situ hybridization (FISH) experiments have identified 9 sets of homoeologous chromosomes in X. laevis, in which 8 sets correspond to chromosomes 1-8 of X. tropicalis (XTR1-XTR8), and the last set corresponds to a fusion of XTR9 and XTR10. In addition, recent X. laevis genome sequencing and BAC-FISHXenopus laevis (XLA) is an allotetraploid species which appears to have undergone whole-genome duplication after the interspecific hybridization of 2 diploid species closely related to Silurana/Xenopus tropicalis (XTR). Previous cDNA fluorescence in situ hybridization (FISH) experiments have identified 9 sets of homoeologous chromosomes in X. laevis, in which 8 sets correspond to chromosomes 1-8 of X. tropicalis (XTR1-XTR8), and the last set corresponds to a fusion of XTR9 and XTR10. In addition, recent X. laevis genome sequencing and BAC-FISH experiments support this physiological relationship and show no gross chromosome translocation in the X. laevis karyotype. Therefore, for the benefit of both comparative cytogenetics and genome research, we here propose a new chromosome nomenclature for X. laevis based on the phylogenetic relationship and chromosome length, i.e. XLA1L, XLA1S, XLA2L, XLA2S, and so on, in which the numbering of XLA chromosomes corresponds to that in X. tropicalis and the postfixes ‘L' and ‘S' stand for ‘long' and ‘short' chromosomes in the homoeologous pairs, which can be distinguished cytologically by their relative size. The last chromosome set is named XLA9L and XLA9S, in which XLA9 corresponds to both XTR9 and XTR10, and hence, to emphasize the phylogenetic relationship to X. tropicalis, XLA9_10L and XLA9_10S are also used as synonyms.…
| Author: | Yoichi Matsuda, Yoshinobu Uno, Mariko Kondo, Michael J. Gilchrist, Aaron M. Zorn, Daniel S. Rokhsar, Michael Schmid, Masanori Taira |
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| URN: | urn:nbn:de:bvb:20-opus-196748 |
| Document Type: | Journal article |
| Faculties: | Medizinische Fakultät / Institut für Humangenetik |
| Language: | English |
| Parent Title (English): | Cytogenetic and Genome Research |
| ISSN: | 1424-8581 |
| ISSN: | 1424-859X |
| Year of Completion: | 2015 |
| Volume: | 145 |
| Issue: | 3-4 |
| Pagenumber: | 187-191 |
| Source: | Cytogenetic and Genome Research 2015;145(3-4):187–191. DOI: 10.1159/000381292 |
| DOI: | https://doi.org/10.1159/000381292 |
| Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/25871511 |
| Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
| Tag: | BrdU replication banding pattern; Xenopus laevis; Xenopus tropicalis; homoeologous chromosomes; nomenclature |
| Release Date: | 2021/08/20 |
| Date of first Publication: | 2015/04/08 |
| Note: | This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. |
| Licence (German): |  Deutsches Urheberrecht |