Artículos de revistas
Establishment of rapid and non-invasive protocols to identify b-carrying individuals of psalidodon paranae
Fecha
2021-01-01Registro en:
Genetics and Molecular Biology, v. 44, n. 2, 2021.
1678-4685
1415-4757
10.1590/1678-4685-gmb-2020-0003
S1415-47572021000300202
2-s2.0-85103627239
S1415-47572021000300202.pdf
Autor
Universidade Estadual Paulista (Unesp)
ICBS
Centro nacional de Pesquisa e Conservação da Biota Aquática Continental (CEPTA-ICMBIO)
Universidade Estadual de Ponta Grossa (UEPG)
Institución
Resumen
Supernumerary, or B, chromosomes are present in several eukaryotes, including characid fish of the genus Psalidodon. Notably, Psalidodon paranae carries the most studied B chromosome variant, a macro-B chromosome. The origin of this element was determined to be an isochromosome; however, data regarding its inheritance remain unavailable due to methodological barriers such as the lack of an efficient, non-invasive, and rapid protocol for identifying B-carrying individuals that would enable the design of efficient crossing experiments. Thus, in this study, we primarily aimed was to develop two non-invasive and fast (approximately 2 h) methods to identify the presence of B chromosomes in live specimens of P. paranae based on satellite DNA (satDNA) sequences known to be present in this element. The methods include fluorescence in situ hybridization in interphase nuclei and relative gene quantification of satDNAs using quantitative polymerase chain reaction. Our results reveal the efficiency of quickfluorescence in situ hybridization and quantitative polymerase chain reaction for identifying B-carrying individuals using the proposed satDNA sequences and open up new possibilities to study B chromosomes.