Další formáty:
BibTeX
LaTeX
RIS
@article{1102734,
author = {Cioffi, Marcelo de Bello and Kejnovský, Eduard and Marquioni, Vinicius and Poltronieri, Juliana and Molina, Wagner Franco and Diniz, Debora and Bertollo, Luiz Antonio Carlos},
article_location = {LONDON},
article_number = {Jun},
doi = {http://dx.doi.org/10.1186/1755-8166-5-28},
keywords = {Microsatellites; Sex chromosome evolution; Heterochromatin; Fish; ZW systems},
language = {eng},
issn = {1755-8166},
journal = {MOLECULAR CYTOGENETICS},
title = {The key role of repeated DNAs in sex chromosome evolution in two fish species with ZW sex chromosome system},
url = {http://www.molecularcytogenetics.org/content/5/1/28},
volume = {5},
year = {2012}
}
TY - JOUR
ID - 1102734
AU - Cioffi, Marcelo de Bello - Kejnovský, Eduard - Marquioni, Vinicius - Poltronieri, Juliana - Molina, Wagner Franco - Diniz, Debora - Bertollo, Luiz Antonio Carlos
PY - 2012
TI - The key role of repeated DNAs in sex chromosome evolution in two fish species with ZW sex chromosome system
JF - MOLECULAR CYTOGENETICS
VL - 5
IS - Jun
SP - "nestránkováno"
EP - "nestránkováno"
PB - BIOMED CENTRAL LTD
SN - 17558166
KW - Microsatellites
KW - Sex chromosome evolution
KW - Heterochromatin
KW - Fish
KW - ZW systems
UR - http://www.molecularcytogenetics.org/content/5/1/28
L2 - http://www.molecularcytogenetics.org/content/5/1/28
N2 - Despite substantial progress, there are still several gaps in our knowledge about the process of sex chromosome differentiation. The degeneration of sex-specific chromosome in some species is well documented, but it is not clear if all species follow the same evolutionary pathway. The accumulation of repetitive DNA sequences, however, is a common feature. To better understand this involvement, fish species emerge as excellent models because they exhibit a wide variety of sex chromosome and sex determining systems. Besides, they have much younger sex chromosomes compared to higher vertebrates, making it possible to follow early steps of differentiation. Here, we analyzed the arrangement of 9 repetitive DNA sequences in the W chromosomes of 2 fish species, namely Leporinus reinhardti and Triportheus auritus, which present well-differentiated ZZ/ZW sex system, but differ in respect to the size of the sex-specific chromosome. Both W chromosomes are almost fully heterochromatic, with accumulation of repeated DNAs in their heterochromatic regions. We found that microsatellites have strongly accumulated on the large W chromosome of L. reinhardti but not on the reduced-size W chromosome of T. auritus and are therefore important players of the W chromosome expansion. The present data highlight that the evolution of the sex chromosomes can diverge even in the same type of sex system, with and without the degeneration of the specific-sex chromosome, being more dynamic than traditionally appreciated.
ER -
CIOFFI, Marcelo de Bello, Eduard KEJNOVSKÝ, Vinicius MARQUIONI, Juliana POLTRONIERI, Wagner Franco MOLINA, Debora DINIZ a Luiz Antonio Carlos BERTOLLO. The key role of repeated DNAs in sex chromosome evolution in two fish species with ZW sex chromosome system. \textit{MOLECULAR CYTOGENETICS}. LONDON: BIOMED CENTRAL LTD, 2012, roč.~5, Jun, s.~''nestránkováno'', 7 s. ISSN~1755-8166. Dostupné z: https://dx.doi.org/10.1186/1755-8166-5-28.
|
