New insights into sex chromosome evolution in anole lizards (Reptilia, Dactyloidae)
| Autor: | Andrea Splendiani, P. Nisi Cerioni, I. G. Kichigin, Bee Ling Ng, Willem Rens, Paolo Ruggeri, Malcolm A. Ferguson-Smith, G. Giovagnoli, Jorge C. Pereira, Vladimir A. Trifonov, Patricia Caroline Mary O’Brien, V. Caputo Barucchi, Ettore Olmo, M. Giovannotti, Fumio Kasai, Alessio Paoletti |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine Ctenonotus Karyotype Comparative mapping 010603 evolutionary biology 01 natural sciences Anolis Chromosome Painting Evolution Molecular Chromosome rearrangements 03 medical and health sciences Norops Genetics Animals In Situ Hybridization Fluorescence Genetics (clinical) Recombination Genetic Sex Chromosomes Autosome biology Dactyloidae Chromosome Mapping Chromosome Lizards biology.organism_classification Chromosome Banding Genes Mitochondrial 030104 developmental biology Evolutionary biology Karyotyping Sex chromosome homology Microchromosome Female Ploidy |
| Zdroj: | Chromosoma (Berl., Print) 126 (2017): 245–260. doi:10.1007/s00412-016-0585-6 info:cnr-pdr/source/autori:Giovannotti M.; Trifonov V.A.; Paoletti A.; Kichigin I.G.; O'Brien P.C.M.; Kasai F.; Giovagnoli G.; Ng B.L.; Ruggeri P.; Cerioni P.N.; Splendiani A.; Pereira J.C.; Olmo E.; Rens W.; Caputo Barucchi V.; Ferguson-Smith M.A./titolo:New insights into sex chromosome evolution in anole lizards (Reptilia, Dactyloidae)/doi:10.1007%2Fs00412-016-0585-6/rivista:Chromosoma (Berl., Print)/anno:2017/pagina_da:245/pagina_a:260/intervallo_pagine:245–260/volume:126 |
| ISSN: | 1432-0886 0009-5915 |
| DOI: | 10.1007/s00412-016-0585-6 |
| Popis: | Anoles are a clade of iguanian lizards that underwent an extensive radiation between 125 and 65 million years ago. Their karyotypes show wide variation in diploid number spanning from 26 (Anolis evermanni) to 44 (A. insolitus). This chromosomal variation involves their sex chromosomes, ranging from simple systems (XX/XY), with heterochromosomes represented by either micro- or macrochromosomes, to multiple systems (X1X1X2X2/X1X2Y). Here, for the first time, the homology relationships of sex chromosomes have been investigated in nine anole lizards at the whole chromosome level. Cross-species chromosome painting using sex chromosome paints from A. carolinensis, Ctenonotus pogus and Norops sagrei and gene mapping of X-linked genes demonstrated that the anole ancestral sex chromosome system constituted by microchromosomes is retained in all the species with the ancestral karyotype (2n = 36, 12 macro- and 24 microchromosomes). On the contrary, species with a derived karyotype, namely those belonging to genera Ctenonotus and Norops, show a series of rearrangements (fusions/fissions) involving autosomes/microchromosomes that led to the formation of their current sex chromosome systems. These results demonstrate that different autosomes were involved in translocations with sex chromosomes in closely related lineages of anole lizards and that several sequential microautosome/sex chromosome fusions lead to a remarkable increase in size of Norops sagrei sex chromosomes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink