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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The B Chromosomes of Prochilodus lineatus (Teleostei, Characiformes) Are Highly Enriched in Satellite DNAs

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Author(s):
Stornioli, Jose Henrique Forte [1] ; Goes, Caio Augusto Gomes [1] ; Calegari, Rodrigo Milan [1] ; dos Santos, Rodrigo Zeni [1] ; Giglio, Leonardo Moura [1] ; Foresti, Fausto [2] ; Oliveira, Claudio [2] ; Penitente, Manolo [3] ; Porto-Foresti, Fabio [1] ; Utsunomia, Ricardo [4]
Total Authors: 10
Affiliation:
[1] Sao Paulo State Univ, Fac Sci, BR-17033360 Bauru, SP - Brazil
[2] Sao Paulo State Univ, Inst Biosci, Dept Struct & Funct Biol, BR-18618689 Botucatu, SP - Brazil
[3] Mato Grosso State Univ, BR-78400000 Cuiaba, MG - Brazil
[4] Rural Fed Univ Rio De Janeiro, Inst Biol Sci & Hlth, Dept Genet, BR-23897000 Seropedica, RJ - Brazil
Total Affiliations: 4
Document type: Journal article
Source: CELLS; v. 10, n. 6 JUN 2021.
Web of Science Citations: 0
Abstract

B or supernumerary chromosomes are dispensable elements that are widely present in numerous eukaryotes. Due to their non-recombining nature, there is an evident tendency for repetitive DNA accumulation in these elements. Thus, satellite DNA plays an important role in the evolution and diversification of B chromosomes and can provide clues regarding their origin. The characiform Prochilodus lineatus was one of the first discovered fish species bearing B chromosomes, with all populations analyzed so far showing one to nine micro-B chromosomes and exhibiting at least three morphological variants (Ba, Bsm, and Bm). To date, a single satellite DNA is known to be located on the B chromosomes of this species, but no information regarding the differentiation of the proposed B-types is available. Here, we characterized the satellitome of P. lineatus and mapped 35 satellite DNAs against the chromosomes of P. lineatus, of which six were equally located on all B-types and this indicates a similar genomic content. In addition, we describe, for the first time, an entire population without B chromosomes. (AU)

FAPESP's process: 18/03365-3 - INTEGRATING CHROMOSOME AND GENOMIC ANALYSES FOR FUNCTIONAL AND EVOLUTIONARY STUDIES OF SATELLITE DNAS IN Astyanax (TELEOSTEI, CHARACIFORMES)
Grantee:Fábio Porto-Foresti
Support Opportunities: Regular Research Grants