Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae).
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). The objective of this work was to estimate the DNA content (2C) in four species of Spergula that inhabit Argentina and to analyze the variation of genome size (Cx) in relation to karyotypic and pal...
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Sociedad Argentina de Botánica
2018
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Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/20582 |
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I10-R10-article-205822019-12-14T13:46:28Z Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). Tamaño del genoma, características cariotípicas y tamaño del polen en especies argentinas de Spergula (Caryophyllaceae) Brem, Marta Carolina Coulleri, Juan Pablo Volponi, Carola Regina Ferrucci, María Silvia Spergula Argentina contenido de ADN nivel de ploidía tamaño cromosómico tamaño del polen. Spergula Argentina DNA content ploidy level chromosome size pollen size. Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). The objective of this work was to estimate the DNA content (2C) in four species of Spergula that inhabit Argentina and to analyze the variation of genome size (Cx) in relation to karyotypic and palynological features. The DNA content of five taxa and the genome size of four, which varied very little between species, were analyzed for the first time from Cx= 0.458 pg (S. salina, 4x) to Cx= 0.856 pg (S. arvensis, 2x). Two new chromosomal counts were recorded for the genus and the pollen size varied from small to medium. The regression coefficients suggest that the chromosome number varies inversely proportional in regards to the genome size, while the genome size presents a low relation with the total chromosome length (TCL) of the diploid genome, although it shows a high relation with respect to the average chromosome length (ACL). Meanwhile, the pollen size varies independently regarding to the genome size. The detected karyotypic variation could be due by numerical and structural changes during the genus evolution, while the pollen size could be related with selection pressures associated with dispersal strategies. El objetivo de este trabajo fue estimar el contenido de ADN (2C) en cuatro especies de Spergula que habitan Argentina y analizar la variación del tamaño del genoma (Cx) en relación con las características cariotípicas y palinológicas. Se analizó por primera vez el contenido de ADN de cinco taxones y el tamaño del genoma de cuatro, que variaron muy poco entre las especies, desde Cx= 0,458 pg (S. salina, 4x) a Cx= 0,856 pg (S. arvensis, 2x). Se registraron dos nuevos recuentos cromosómicos para el género y el tamaño del polen varió de pequeños a medianos. Los coeficientes de regresión sugieren que el número de cromosomas varía de manera inversamente proporcional al tamaño del genoma, mientras que el tamaño del genoma presenta una baja relación con la longitud cromosómica total (LCT) del genoma diploide, aunque muestra una alta relación con respecto a la longitud cromosómica promedio (LCP). En tanto, el tamaño del polen varía independientemente con respecto al tamaño del genoma. La variación cariotípica detectada podría deberse a cambios numéricos y estructurales durante la evolución del género, mientras que el tamaño del polen podría estar relacionado con presiones de selección asociadas a estrategias de dispersión. Sociedad Argentina de Botánica 2018-07-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/20582 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 53 No. 2 (2018): June; 255-266 Boletín de la Sociedad Argentina de Botánica; Vol. 53 Núm. 2 (2018): Junio; 255-266 Boletín de la Sociedad Argentina de Botánica; v. 53 n. 2 (2018): Junio; 255-266 1851-2372 0373-580X 10.31055/1851.2372.v53.n2 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/20582/20254 Derechos de autor 2018 Boletín de la Sociedad Argentina de Botánica |
institution |
Universidad Nacional de Córdoba |
institution_str |
I-10 |
repository_str |
R-10 |
container_title_str |
Revistas de la UNC |
language |
Español |
format |
Artículo revista |
topic |
Spergula Argentina contenido de ADN nivel de ploidía tamaño cromosómico tamaño del polen. Spergula Argentina DNA content ploidy level chromosome size pollen size. |
spellingShingle |
Spergula Argentina contenido de ADN nivel de ploidía tamaño cromosómico tamaño del polen. Spergula Argentina DNA content ploidy level chromosome size pollen size. Brem, Marta Carolina Coulleri, Juan Pablo Volponi, Carola Regina Ferrucci, María Silvia Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
topic_facet |
Spergula Argentina contenido de ADN nivel de ploidía tamaño cromosómico tamaño del polen. Spergula Argentina DNA content ploidy level chromosome size pollen size. |
author |
Brem, Marta Carolina Coulleri, Juan Pablo Volponi, Carola Regina Ferrucci, María Silvia |
author_facet |
Brem, Marta Carolina Coulleri, Juan Pablo Volponi, Carola Regina Ferrucci, María Silvia |
author_sort |
Brem, Marta Carolina |
title |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
title_short |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
title_full |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
title_fullStr |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
title_full_unstemmed |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). |
title_sort |
genome size, karyotypic features and pollen size in argentinian species of spergula (caryophyllaceae). |
description |
Genome size, karyotypic features and pollen size in Argentinian species of Spergula (Caryophyllaceae). The objective of this work was to estimate the DNA content (2C) in four species of Spergula that inhabit Argentina and to analyze the variation of genome size (Cx) in relation to karyotypic and palynological features. The DNA content of five taxa and the genome size of four, which varied very little between species, were analyzed for the first time from Cx= 0.458 pg (S. salina, 4x) to Cx= 0.856 pg (S. arvensis, 2x). Two new chromosomal counts were recorded for the genus and the pollen size varied from small to medium. The regression coefficients suggest that the chromosome number varies inversely proportional in regards to the genome size, while the genome size presents a low relation with the total chromosome length (TCL) of the diploid genome, although it shows a high relation with respect to the average chromosome length (ACL). Meanwhile, the pollen size varies independently regarding to the genome size. The detected karyotypic variation could be due by numerical and structural changes during the genus evolution, while the pollen size could be related with selection pressures associated with dispersal strategies. |
publisher |
Sociedad Argentina de Botánica |
publishDate |
2018 |
url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/20582 |
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first_indexed |
2022-08-20T01:21:01Z |
last_indexed |
2022-08-20T01:21:01Z |
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