RT journal article
T1 Integration of Maps Enables a Cytogenomics Analysis of the Complete Karyotype in Solea senegalensis
A1 Ramírez Torres, Daniel
A1 Rodríguez Jiménez, María Esther
A1 Cross Pacheco, Ismael
A1 Arias Pérez, Alberto
A1 Merlo Torres, Manuel Alejandro
A1 Anaya, Marco
A1 Martínez, Paulino
A1 Robles, Francisca
A1 Ruiz Rejón, C.
A1 Rebordinos González, Laureana
A2 BiomedicinaBiotecnología y Salud Pública
K1 Solea senegalensis
K1 pleuronectiformes
K1 genetic maps
K1 cytogenomics
K1 chromosome evolution
K1 karyotype
K1 repetitive sequences
K1 comparative genomics
AB The Pleuronectiformes order, which includes several commercially-important species, has undergone extensive chromosome evolution. One of these species is Solea senegalensis, a flatfish with 2n = 42 chromosomes. In this study, a cytogenomics approach and integration with previous maps was applied to characterize the karyotype of the species. Synteny analysis of S. senegalensis was carried out using two flatfish as a reference: Cynoglossus semilaevis and Scophthalmus maximus. Most S. senegalensis chromosomes (or chromosome arms for metacentrics and submetacentrics) showed a one-to-one macrosyntenic pattern with the other two species. In addition, we studied how repetitive sequences could have played a role in the evolution of S. senegalensis bi-armed (3, and 5-9) and acrocentric (11, 12 and 16) chromosomes, which showed the highest rearrangements compared with the reference species. A higher abundance of TEs (Transposable Elements) and other repeated elements was observed adjacent to telomeric regions on chromosomes 3, 7, 9 and 16. However, on chromosome 11, a greater abundance of DNA transposons was detected in interstitial BACs. This chromosome is syntenic with several chromosomes of the other two flatfish species, suggesting rearrangements during its evolution. A similar situation was also found on chromosome 16 (for microsatellites and low complexity sequences), but not for TEs (retroelements and DNA transposons). These differences in the distribution and abundance of repetitive elements in chromosomes that have undergone remodeling processes during the course of evolution also suggest a possible role for simple repeat sequences in rearranged regions.
PB MDPI
SN 1422-0067
YR 2022
FD 2022-05
LK http://hdl.handle.net/10498/27227
UL http://hdl.handle.net/10498/27227
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026