Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping

Notolathyrus is a section of South American endemic species of the genus Lathyrus. The origin, phylogenetic relationship and delimitation of some species are still controversial. The present study provides an exhaustive analysis of the karyotypes of approximately half (10) of the species recognized...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Chalup, Laura María Isabel, Samoluk, Sergio Sebastián, Solís Neffa, Viviana Griselda, Seijo, José Guillermo
Formato: Artículo
Lenguaje:Inglés
Publicado: Sociedad Botánica de Japón 2025
Materias:
Heterochromatin
Karyotipe
Lathyrus
rDNA loci
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/59371
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-59371
record_format dspace
spelling I48-R184-123456789-593712025-12-15T12:03:44Z Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping Chalup, Laura María Isabel Samoluk, Sergio Sebastián Solís Neffa, Viviana Griselda Seijo, José Guillermo Heterochromatin Karyotipe Lathyrus rDNA loci Notolathyrus is a section of South American endemic species of the genus Lathyrus. The origin, phylogenetic relationship and delimitation of some species are still controversial. The present study provides an exhaustive analysis of the karyotypes of approximately half (10) of the species recognized for section Notolathyrus and four outgroups (sections Lathyrus and Orobus) by cytogenetic mapping of heterochromatic bands and 45S and 5S rDNA loci. The bulk of the parameters analyzed here generated markers to identify most of the chromosomes in the complements of the analyzed species. Chromosome banding showed interspecific variation in the amount and distribution of heterochromatin, and together with the distribution of rDNA loci, allowed the characterization of all the species studied here. Additionally, some of the chromosome parameters described (st chromosomes and the 45S rDNA loci) constitute the first diagnostic characters for the Notolathyrus section. Evolutionary, chromosome data revealed that the South American species are a homogeneous group supporting the monophyly of the section. Variation in the amount of heterochromatin was not directly related to the variation in DNA content of the Notolathyrus species. However, the correlation observed between the amount of heterochromatin and some geographical and bioclimatic variables suggest that the variation in the heterochromatic fraction should have an adaptive value. 2025-12-15T11:33:04Z 2025-12-15T11:33:04Z 2015-06-28 Artículo Chalup, Laura María Isabel, et al., 2015. Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping. Journal of Plant Research. Sakai: Sociedad Botánica de Japón, vol. 128, p. 893-908. E-ISSN 1618-0860. DOI https://doi.org/10.1007/s10265-015-0756-1 0918-9440 http://repositorio.unne.edu.ar/handle/123456789/59371 en https://doi.org/10.1007/s10265-015-0756-1 restrictedAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 893-908 application/pdf Sociedad Botánica de Japón Journal of Plant Research, 2015, vol. 128, p. 893-908.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Heterochromatin
Karyotipe
Lathyrus
rDNA loci
spellingShingle Heterochromatin
Karyotipe
Lathyrus
rDNA loci
Chalup, Laura María Isabel
Samoluk, Sergio Sebastián
Solís Neffa, Viviana Griselda
Seijo, José Guillermo
Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
topic_facet Heterochromatin
Karyotipe
Lathyrus
rDNA loci
description Notolathyrus is a section of South American endemic species of the genus Lathyrus. The origin, phylogenetic relationship and delimitation of some species are still controversial. The present study provides an exhaustive analysis of the karyotypes of approximately half (10) of the species recognized for section Notolathyrus and four outgroups (sections Lathyrus and Orobus) by cytogenetic mapping of heterochromatic bands and 45S and 5S rDNA loci. The bulk of the parameters analyzed here generated markers to identify most of the chromosomes in the complements of the analyzed species. Chromosome banding showed interspecific variation in the amount and distribution of heterochromatin, and together with the distribution of rDNA loci, allowed the characterization of all the species studied here. Additionally, some of the chromosome parameters described (st chromosomes and the 45S rDNA loci) constitute the first diagnostic characters for the Notolathyrus section. Evolutionary, chromosome data revealed that the South American species are a homogeneous group supporting the monophyly of the section. Variation in the amount of heterochromatin was not directly related to the variation in DNA content of the Notolathyrus species. However, the correlation observed between the amount of heterochromatin and some geographical and bioclimatic variables suggest that the variation in the heterochromatic fraction should have an adaptive value.
format Artículo
author Chalup, Laura María Isabel
Samoluk, Sergio Sebastián
Solís Neffa, Viviana Griselda
Seijo, José Guillermo
author_facet Chalup, Laura María Isabel
Samoluk, Sergio Sebastián
Solís Neffa, Viviana Griselda
Seijo, José Guillermo
author_sort Chalup, Laura María Isabel
title Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
title_short Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
title_full Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
title_fullStr Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
title_full_unstemmed Karyotype characterization and evolution in South American species of Lathyrus (Notolathyrus, Leguminosae) evidenced by heterochromatin and rDNA mapping
title_sort karyotype characterization and evolution in south american species of lathyrus (notolathyrus, leguminosae) evidenced by heterochromatin and rdna mapping
publisher Sociedad Botánica de Japón
publishDate 2025
url http://repositorio.unne.edu.ar/handle/123456789/59371
work_keys_str_mv AT chaluplauramariaisabel karyotypecharacterizationandevolutioninsouthamericanspeciesoflathyrusnotolathyrusleguminosaeevidencedbyheterochromatinandrdnamapping
AT samoluksergiosebastian karyotypecharacterizationandevolutioninsouthamericanspeciesoflathyrusnotolathyrusleguminosaeevidencedbyheterochromatinandrdnamapping
AT solisneffavivianagriselda karyotypecharacterizationandevolutioninsouthamericanspeciesoflathyrusnotolathyrusleguminosaeevidencedbyheterochromatinandrdnamapping
AT seijojoseguillermo karyotypecharacterizationandevolutioninsouthamericanspeciesoflathyrusnotolathyrusleguminosaeevidencedbyheterochromatinandrdnamapping
_version_ 1857347543043670016

Ejemplares similares