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| Content Provider | Springer Nature Link |
|---|---|
| Author | García, G. Ríos, N. Gutiérrez, V. |
| Copyright Year | 2015 |
| Abstract | Among Neotropical fish fauna, the South American killifish genus Austrolebias (Cyprinodontiformes: Rivulidae) constitutes an excellent model to study the genomic evolutionary processes underlying speciation events. Recently, unusually large genome size has been described in 16 species of this genus, with an average DNA content of about 5.95 ± 0.45 pg per diploid cell (mean C-value of about 2.98 pg). In the present paper we explore the possible origin of this unparallel genomic increase by means of comparative analysis of the repetitive components using NGS (454-Roche) technology in the lowest and highest Rivulidae genomes. Here, we provide the first annotated Rivulidae-repeated sequences composition and their relative repetitive fraction in both genomes. Remarkably, the genomic proportion of the moderately repetitive DNA in Austrolebias charrua genome represents approximately twice (45 %) of the repetitive components of the highly related rivulinae taxon Cynopoecilus melanotaenia (25 %). Present work provides evidence about the impact of the repeat families that could be distinctly proliferated among sublineages within Rivulidae fish group, explaining the great genome size differences encompassing the differentiation and speciation events in this family. |
| Starting Page | 353 |
| Ending Page | 360 |
| Page Count | 8 |
| File Format | |
| ISSN | 00166707 |
| Journal | Genetica |
| Volume Number | 143 |
| Issue Number | 3 |
| e-ISSN | 15736857 |
| Language | English |
| Publisher | Springer International Publishing |
| Publisher Date | 2015-03-20 |
| Publisher Place | Cham |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Giant genomes Repetitive sequences Rivulidae Life Sciences Animal Genetics and Genomics Plant Genetics & Genomics Human Genetics Microbial Genetics and Genomics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Plant Science Medicine Animal Science and Zoology Insect Science |
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