Tracking the evolution of sex chromosome systems in Melanoplinae grasshoppers through chromosomal mapping of repetitive DNA sequences

@article{PalaciosGimenez2013TrackingTE,
  title={Tracking the evolution of sex chromosome systems in Melanoplinae grasshoppers through chromosomal mapping of repetitive DNA sequences},
  author={Octavio Manuel Palacios-Gimenez and Elio R D Castillo and Dardo Andrea Mart{\'i} and Diogo Cavalcanti Cabral-de-Mello},
  journal={BMC Evolutionary Biology},
  year={2013},
  volume={13},
  pages={167 - 167}
}
BackgroundThe accumulation of repetitive DNA during sex chromosome differentiation is a common feature of many eukaryotes and becomes more evident after recombination has been restricted or abolished. The accumulated repetitive sequences include multigene families, microsatellites, satellite DNAs and mobile elements, all of which are important for the structural remodeling of heterochromatin. In grasshoppers, derived sex chromosome systems, such as neo-XY♂/XX♀ and neo-X1X2Y♂/X1X1X2X2♀, are… 
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55 Citations

Origin and Evolution of the Neo-Sex Chromosomes in Pamphagidae Grasshoppers through Chromosome Fusion and Following Heteromorphization

Details of the heteromorphization of the neo-sex chromosomes in species from both phylogenetic lineages of Pamphagidae grasshoppers are revealed and the hypothetical mechanism of the Neo-Y degradation was suggested.

Construction and Characterization of a Repetitive DNA Library in Parodontidae (Actinopterygii: Characiformes): A Genomic and Evolutionary Approach to the Degeneration of the W Sex Chromosome

It is demonstrated that an intensive invasion of TEs occurred during W sex chromosome differentiation in the Parodontidae, and the location of these elements on the chromosomes is important for understanding the function of these repetitive DNAs and for integrative studies with genome sequencing.

Repetitive DNA Sequences and Evolution of ZZ/ZW Sex Chromosomes in Characidium (Teleostei: Characiformes)

A comparative cytogenetic analysis in 13 Characidium species collected at different South American river basins confirmed the extensive karyotype diversity withinCharacidium in contrast with a conserved diploid chromosome number.

Construction and characterization of a repetitive DNA library in Parodontidae (Atinopterygii:Characiformes): a genomic and evolutionary approach to the degeneration of the w sex cromosome.

The presented data demonstrate that an intensive invasion of TEs occurred during W sex chromosome differentiation in the Parodontidae and are important for understanding the function of these repetitive DNAs and for integrative studies with genome sequencing.

Tracking the evolutionary pathway of sex chromosomes among fishes: characterizing the unique XX/XY1Y2 system in Hoplias malabaricus (Teleostei, Characiformes)

The present data suggested the origin of this unique XY1Y2 sex system, revealing evidences for the high level of plasticity of sex chromosome differentiation within the Erythrinidae.

High-throughput analysis of the satellitome revealed enormous diversity of satellite DNAs in the neo-Y chromosome of the cricket Eneoptera surinamensis

The results suggest possible involvement of satDNAs in genome increasing and in molecular differentiation of the neo-sex chromosomes in this species, contributing to the understanding of sex chromosome composition and evolution in Orthoptera.

Comparative analysis of C-heterochromatin, ribosomal and telomeric DNA markers in chromosomes of Pamphagidae grasshoppers from Morocco

Differences in the karyotypes of 10 species of the family Pamphagidae from Morocco revealed differences in the location and size of C-heterochromatin blocks and ribosomal DNA clusters, showing that karyotype divergences in this group is connected to structural chromosome rearrangements, but to the evolution of repetitive DNA.

Sex chromosome diversity in Armenian toad grasshoppers (Orthoptera, Acridoidea, Pamphagidae)

It is concluded that the different stages of neo-Y degradation revealed in the Pamphagidae species studied make the family a very promising and useful model for studying sex chromosome evolution.

Chromosomal Spreading of Microsatellites and (TTAGGG)n Sequences in the Characidium zebra and C. gomesi Genomes (Characiformes: Crenuchidae)

The distribution pattern of 18 different tandem repeats, including (GATA)n and (TTAGGG)n, in the genomes of C. zebra and C. gomesi were analyzed to explain the evolution of sex chromosomes in Characidium.

U1 snDNA clusters in grasshoppers: chromosomal dynamics and genomic organization

It is concluded in grasshoppers that the U1 snDNA had evolved under the birth-and-death model and that its intragenomic spread might be related with mobile elements.
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