Correction: The key role of repeated DNAs in sex chromosome evolution in two fish species with ZW sex chromosome system

Cioffi, Marcelo de Bello; Eduard, Kejnovský; Marquioni, Vinicius; Poltronieri, Juliana; F, Molina Wagner; Diniz, Débora; Bertollo, Luiz Antônio Carlos

doi:10.1186/1755-8166-5-42

Cited by 38 publications

(19 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are consistent with previous studies conducted in different species, which have indicated that microsatellites usually accumulate in typically heterochromatic regions such as telomeres, centromeres and sex chromosomes [Martins, 2007;Cioffi et al, 2012]. Although it is rather difficult to precisely identify the Z chromosome on the metaphases investigated, conclusions concerning this chromosome can be drawn by noticing whether any of the non-W chromosomes shows a different accumulation pattern.…”

Section: Discussionsupporting

confidence: 80%

“…Recent data have demonstrated a close relation between sex chromosomes and the accumulation of heterochromatin, and distinct types of repetitive DNAs might be associated with the differentiation of these chromosomes [Cioffi and Bertollo, 2012]. However, repetitive DNA families have been mapped on the sex chromosomes in a few Leporinus species [Nakayama et al, 1994;Parise-Maltempi et al, 2007;Marreta et al, 2012].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Comparative Chromosomal Mapping of Microsatellites in Leporinus Species (Characiformes, Anostomidae): Unequal Accumulation on the W Chromosomes

Poltronieri¹,

Marquioni²,

Bertollo³

et al. 2013

Cytogenet Genome Res

View full text Add to dashboard Cite

Approximately 90 species in the genus Leporinus (Characiformes, Anostomidae) are known, and most of them do not present differentiated sex chromosomes. However, there is a group of 7 species that share a heteromorphic ZW sex system. In all of these species, the W chromosome is the largest one in the karyotype and is mostly heterochromatic. We investigated the distribution of several microsatellites in the genome of 4 Leporinus species that possess ZW chromosomes. Our results showed a very large accumulation of mostly microsatellites on the W chromosomes. This finding supports the presence of an interconnection between heterochromatinization and the accumulation of repetitive sequences, which has been proposed for sex chromosome evolution, and suggests that heterochromatinization is the earlier of the 2 processes. In spite of the common origin that has been proposed for W chromosomes in all of the studied species, the microsatellites followed different evolutionary trajectories in each species, which indicates a high plasticity for sex chromosome differentiation.

show abstract

Section: Discussionsupporting

confidence: 80%

mentioning

confidence: 99%

Comparative Chromosomal Mapping of Microsatellites in Leporinus Species (Characiformes, Anostomidae): Unequal Accumulation on the W Chromosomes

Poltronieri¹,

Marquioni²,

Bertollo³

et al. 2013

Cytogenet Genome Res

View full text Add to dashboard Cite

show abstract

“…The same phenomenon has been reported in Oryzias hubbsi and O. javanicus (Takehana et al, 2012), with 3 18S rDNA sites located on a pair of autosomes and the W chromosome in females. In Triportheus auritus, 5 18S rDNA fluorescence hybridization signals are present on 2 autosomal pairs and the W chromosome (Cioffi et al, 2012). A sex chromosome bearing rDNA loci has also been found in other fish species, such as Fundulus diaphanous (Howell and Black, 1979) and Hoplias malabaricus (Born and Bertollo, 2000).…”

Section: Discussionmentioning

confidence: 81%

“…The author of an existing study inclines to the hypothesis that nucleolus-organizing regions associated with terminal heterochromatin were more prone to chromosome rearrangements (Moreira-Filho et al, 1984). Besides, the accumulations of repetitive sequences on independently evolved sex chromosomes have been proved (Cioffi et al, 2012). The chromosome fusions and repetitive sequences accumulations may explain, to some extent, why the W chromosome was larger than the Z chromosome and autosomes.…”

Section: Discussionmentioning

confidence: 99%

Chromosome mapping of 18S rDNA and 5S rDNA by dual-color fluorescence in situ hybridization in the half-smooth tongue sole (Cynoglossus semilaevis)

Jiang

Liu

et al. 2014

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. Half-smooth tongue sole (Cynoglossus semilaevis) is an important aquaculture flatfish in China. Cytogenetic analysis has revealed that its sex determination system is female heterogametic (ZZ/ZW). The W chromosome is morphologically larger and has been considered evolutionarily younger than any other chromosome in the set. However, the genetic origin and evolution process of this neo-chromosome remains unclear. In this study, 2 tandem arrays of rRNA genes were chosen to address this question. Both the major rDNA (18S rDNA) and the minor rDNA (5S rDNA) were located on the C. semilaevis chromosomes by fluorescence in situ hybridization (FISH). Six 18S rDNA signals were observed on the centromeric regions of 3 pairs of autosomes in both males and females. In females, there was an additional 18S rDNA signal mapping to the telomeric region of the W chromosome long arm. With respect to the 5S rDNA, 12 signals were mapped to the centromeric regions of six pairs of autosomes. Two-color FISH further confirmed that the two pairs of the 5S rDNA signals were correspondingly located at the same positions of the same autosomes as those of the 18S rDNA signals. These results allowed us to speculate about the evolution process of the W chromosome. Chromosome fusions and repetitive sequence accumulations might have occurred in C. semilaevis. The synteny and non-synteny of C. semilaevis 18S rDNA and 5S rDNA might imply the original and evolutionary characteristics of this species. These findings will facilitate studies on karyotype evolution of the order Pleuronectiformes.

show abstract

“…Cytogenetic mapping of microsatellite sequences in fishes has increased in recent years , demonstrating, in many cases, preferential accumulation of these sequences in chromosomal regions such as centromeres and telomeres [Shimoda et al, 1999;Cioffi et al, 2012]. This pattern was also observed in the chromosomes of G. oceanicus and G. stomatus.…”

Section: Heterochromatin Distribution and Rdna Sites In Gobionellusmentioning

confidence: 83%

Chromosomal Mapping of Repetitive DNAs in Gobionellus oceanicus and G. stomatus (Gobiidae; Perciformes): A Shared XX/XY System and an Unusual Distribution of 5S rDNA Sites on the Y Chromosome

Lima-Filho¹,

Amorim²,

Cioffi³

et al. 2014

Cytogenet Genome Res

View full text Add to dashboard Cite

With nearly 2,000 species, Gobiidae is the most specious family of the vertebrates. This high level of speciation is accompanied by conspicuous karyotypic modifications, where the role of repetitive sequences remains largely unknown. This study analyzed the karyotype of 2 species of the genus Gobionellus and mapped 18S and 5S ribosomal RNA genes and (CA)₁₅ microsatellite sequences onto their chromosomes. G. oceanicus (2n = 56; ♂ 12 metacentrics (m) + 4 submetacentrics (sm) + 1 subtelocentric (st) + 39 acrocentrics (a); ♀ 12m + 4sm + 2st + 38a) and G. stomatus (2n = 56; ♂ 20m + 14sm + 1st + 21a; ♀ 20m + 14sm + 2st + 20a) possess the highest diploid chromosome number among the Gobiidae and have different karyotypes. Both species share an XX/XY sex chromosome system with a large subtelocentric X and a small acrocentric Y chromosome which is rich in (CA)₁₅ sequences and bears 5S rRNA sites. Although coding and noncoding repetitive DNA sequences may be involved in the genesis or differentiation of the sex chromosomes, the exclusive presence of 5S rDNA sites on the Y, but not on the X chromosome of both species, represents a novelty in fishes. In summary, the karyotypic differences, as well as new data on the sex chromosome systems in these 2 Gobiidae species, confirm the high chromosomal dynamism observed in this family.

show abstract

Correction: The key role of repeated DNAs in sex chromosome evolution in two fish species with ZW sex chromosome system

Cited by 38 publications

References 2 publications

Comparative Chromosomal Mapping of Microsatellites in <b><i>Leporinus</i></b> Species (Characiformes, Anostomidae): Unequal Accumulation on the W Chromosomes

Comparative Chromosomal Mapping of Microsatellites in <b><i>Leporinus</i></b> Species (Characiformes, Anostomidae): Unequal Accumulation on the W Chromosomes

Chromosome mapping of 18S rDNA and 5S rDNA by dual-color fluorescence in situ hybridization in the half-smooth tongue sole (Cynoglossus semilaevis)

Chromosomal Mapping of Repetitive DNAs in <b><i>Gobionellus oceanicus</i></b> and <b><i>G. stomatus</i></b> (Gobiidae; Perciformes): A Shared XX/XY System and an Unusual Distribution of 5S rDNA Sites on the Y Chromosome

Contact Info

Product

Resources

About