Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics

Genome size is a species level that often allows taxon delimitation, influencesgenetic diversity, and can be related to morphological, ecological, and distribution characteristics.Chrysolaena H. Rob. (Vernonieae, Asteraceae) is a South American genus, highly cytogeneticallydiverse, exhibiting large...

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Autores principales: Via do Pico, Gisela M., Farco, Gabriela E., Marques, Danilo
Formato: Artículo revista
Lenguaje:Español
Publicado: Instituto de Botánica del Nordeste 2026
Materias:
Contenido de ADN
número cromosómico
valor 2C
variables climáticas
variables edáficas
Chromosome number
DNA content
2C value
climatic variables
soil variables
Acceso en línea:https://revistas.unne.edu.ar/index.php/bon/article/view/9126
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-9126
record_format ojs
spelling I48-R154-article-91262026-02-13T22:42:37Z Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics Tamaño del genoma en especies del género sudamericano Chrysolaena (Vernonieae: Asteraceae) y su relación con características citogenéticas y ambientales Via do Pico, Gisela M. Farco, Gabriela E. Marques, Danilo Contenido de ADN número cromosómico valor 2C variables climáticas variables edáficas Chromosome number DNA content 2C value climatic variables soil variables Genome size is a species level that often allows taxon delimitation, influencesgenetic diversity, and can be related to morphological, ecological, and distribution characteristics.Chrysolaena H. Rob. (Vernonieae, Asteraceae) is a South American genus, highly cytogeneticallydiverse, exhibiting large interspecific and intraspecific chromosomal variation. In this work, thegenome size (2C value) of Chrysolaena species was determined to assess variation amongthe different chromosome numbers present in the species, to examine the relationship betweengenome size and chromosome numbers, latitude, and environmental variables, and expandthe database for Asteraceae. Linear regression results showed that the 2C value is related tochromosome number. However, the correlation with latitude and environmental variables is verylow. Evolutionary trends in genome size include both increases and decreases, and polyploidyis believed to be the main mechanism generating increases in genomic DNA content. Theresults of this study constitute an important contribution to the knowledge of genome size in arepresentative genus of the Asteraceae family in South America. El tamaño del genoma es un atributo de las especies que a menudo permite delimitar taxones, influye en la diversidad genética y puede estar relacionado con características morfológicas, ecológicas y de distribución. Chrysolaena H. Rob. (Vernonieae, Asteraceae) es un género sudamericano, citogenéticamente muy diverso, con una gran variación cromosómica interespecífica e intraespecífica. En este trabajo se determinó el tamaño del genoma (valor 2C) de especies de Chrysolaena a fin de hallar variaciones entre los diferentes números cromosómicos que presentan las especies, relacionar el tamaño del genoma con los números cromosómicos, la latitud y variables ambientales, y ampliar la base de datos para las Asteraceae. Los resultados de la regresión lineal mostraron que el valor 2C está relacionado con el número de cromosomas. Sin embargo, la correlación con la latitud y las variables ambientales es muy baja. Las tendencias evolutivas en el tamaño del genoma abarcan tanto aumentos como disminuciones y la poliploidía sería el principal mecanismo que genera aumentos en el contenido de ADN genómico. Los resultados de este estudio constituyen una importante contribución al conocimiento del tamaño del genoma de un género representativo de la familia Asteraceae en América del Sur. Instituto de Botánica del Nordeste 2026-02-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/bon/article/view/9126 10.30972/bon.3519126 Bonplandia; Vol. 35 No. 1 (2026); 1-18 Bonplandia; Vol. 35 Núm. 1 (2026); 1-18 1853-8460 0524-0476 spa https://revistas.unne.edu.ar/index.php/bon/article/view/9126/8861 Derechos de autor 2026 Bonplandia http://creativecommons.org/licenses/by/4.0
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Contenido de ADN
número cromosómico
valor 2C
variables climáticas
variables edáficas
Chromosome number
DNA content
2C value
climatic variables
soil variables
spellingShingle Contenido de ADN
número cromosómico
valor 2C
variables climáticas
variables edáficas
Chromosome number
DNA content
2C value
climatic variables
soil variables
Via do Pico, Gisela M.
Farco, Gabriela E.
Marques, Danilo
Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
topic_facet Contenido de ADN
número cromosómico
valor 2C
variables climáticas
variables edáficas
Chromosome number
DNA content
2C value
climatic variables
soil variables
author Via do Pico, Gisela M.
Farco, Gabriela E.
Marques, Danilo
author_facet Via do Pico, Gisela M.
Farco, Gabriela E.
Marques, Danilo
author_sort Via do Pico, Gisela M.
title Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
title_short Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
title_full Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
title_fullStr Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
title_full_unstemmed Genome size in species of the South American genus Chrysolaena (Vernonieae: Asteraceae) and its relationship with cytogenetic and environmental characteristics
title_sort genome size in species of the south american genus chrysolaena (vernonieae: asteraceae) and its relationship with cytogenetic and environmental characteristics
description Genome size is a species level that often allows taxon delimitation, influencesgenetic diversity, and can be related to morphological, ecological, and distribution characteristics.Chrysolaena H. Rob. (Vernonieae, Asteraceae) is a South American genus, highly cytogeneticallydiverse, exhibiting large interspecific and intraspecific chromosomal variation. In this work, thegenome size (2C value) of Chrysolaena species was determined to assess variation amongthe different chromosome numbers present in the species, to examine the relationship betweengenome size and chromosome numbers, latitude, and environmental variables, and expandthe database for Asteraceae. Linear regression results showed that the 2C value is related tochromosome number. However, the correlation with latitude and environmental variables is verylow. Evolutionary trends in genome size include both increases and decreases, and polyploidyis believed to be the main mechanism generating increases in genomic DNA content. Theresults of this study constitute an important contribution to the knowledge of genome size in arepresentative genus of the Asteraceae family in South America.
publisher Instituto de Botánica del Nordeste
publishDate 2026
url https://revistas.unne.edu.ar/index.php/bon/article/view/9126
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first_indexed 2026-02-17T05:00:48Z
last_indexed 2026-02-17T05:00:48Z
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