Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny
Background and aims: Tephrocactus is a genus of Cactaceae belonging to the Opuntioideae subfamily, with most of its species endemic to Argentina. It comprises bushes with lax branches formed by globose joints, which are often fragile and detach generating new plants. Clonal reproduction is associate...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Sociedad Argentina de Botánica
2022
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/34773 |
| Aporte de: |
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I10-R325-article-34773 |
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ojs |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Español |
| format |
Artículo revista |
| topic |
Cactaceae mapeos morfo-anatómicos morfo-anatomía niveles de ploidía Tephrocactus Cactaceae mapping morpho-anatomy, morpho-anatomy ploidy level, Tephrocactus. |
| spellingShingle |
Cactaceae mapeos morfo-anatómicos morfo-anatomía niveles de ploidía Tephrocactus Cactaceae mapping morpho-anatomy, morpho-anatomy ploidy level, Tephrocactus. Di Dio, Ivana Stiefkens, Laura B. Las Peñas, Laura M. Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| topic_facet |
Cactaceae mapeos morfo-anatómicos morfo-anatomía niveles de ploidía Tephrocactus Cactaceae mapping morpho-anatomy, morpho-anatomy ploidy level, Tephrocactus. |
| author |
Di Dio, Ivana Stiefkens, Laura B. Las Peñas, Laura M. |
| author_facet |
Di Dio, Ivana Stiefkens, Laura B. Las Peñas, Laura M. |
| author_sort |
Di Dio, Ivana |
| title |
Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| title_short |
Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| title_full |
Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| title_fullStr |
Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| title_full_unstemmed |
Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny |
| title_sort |
analyses of morpho-anatomic variables in tephrocactus (cactaceae): correlation with ploidy levels and mappiong in its philogeny |
| description |
Background and aims: Tephrocactus is a genus of Cactaceae belonging to the Opuntioideae subfamily, with most of its species endemic to Argentina. It comprises bushes with lax branches formed by globose joints, which are often fragile and detach generating new plants. Clonal reproduction is associated with the occurrence of high ploidy levels in the genus. The aim of this work was to compare morpho-anatomical traits of the epidermis and underlying tissues of Tephrocactus taxa with different ploidy levels (2n = 22, 44, 77, 88, 242 and 319) and to evaluate them in a phylogenetic context.
M&M: The epidermis and underlying tissues of specimens were studied by means of classical histological techniques. The morpho-anatomical variables were statistically compared and mapped on the phylogeny of the genus.
Results: The stomatal frequency, the frequency of ordinary epidermal cells, the stomatal index, and the stomata length were determined and the underlying tissues (hypodermis) were analyzed with special reference to the shape, frequency and arrangement of druses. All the variables studied showed statistically significant differences among taxa. A positive relationship was found between ploidy levels and size of all types of epidermal cells and druses.
Conclusions: The common ancestor of the group would have small stomata, an intermediate frequency of ordinary epidermal cells, and druses in their hypodermis. The characteristics of the epidermis and underlying tissues correlate with the level of ploidy in the Tephrocactus taxa studied. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2022 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/34773 |
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I10-R325-article-347732022-04-22T13:03:00Z Analyses of morpho-anatomic variables in Tephrocactus (Cactaceae): Correlation with ploidy levels and mappiong in its philogeny Análisis de variables morfo-anatómicas en Tephrocactus (Cactaceae), su correlación con niveles de ploidía y mapeos en su filogenia Di Dio, Ivana Stiefkens, Laura B. Las Peñas, Laura M. Cactaceae mapeos morfo-anatómicos morfo-anatomía niveles de ploidía Tephrocactus Cactaceae mapping morpho-anatomy, morpho-anatomy ploidy level, Tephrocactus. Background and aims: Tephrocactus is a genus of Cactaceae belonging to the Opuntioideae subfamily, with most of its species endemic to Argentina. It comprises bushes with lax branches formed by globose joints, which are often fragile and detach generating new plants. Clonal reproduction is associated with the occurrence of high ploidy levels in the genus. The aim of this work was to compare morpho-anatomical traits of the epidermis and underlying tissues of Tephrocactus taxa with different ploidy levels (2n = 22, 44, 77, 88, 242 and 319) and to evaluate them in a phylogenetic context. M&M: The epidermis and underlying tissues of specimens were studied by means of classical histological techniques. The morpho-anatomical variables were statistically compared and mapped on the phylogeny of the genus. Results: The stomatal frequency, the frequency of ordinary epidermal cells, the stomatal index, and the stomata length were determined and the underlying tissues (hypodermis) were analyzed with special reference to the shape, frequency and arrangement of druses. All the variables studied showed statistically significant differences among taxa. A positive relationship was found between ploidy levels and size of all types of epidermal cells and druses. Conclusions: The common ancestor of the group would have small stomata, an intermediate frequency of ordinary epidermal cells, and druses in their hypodermis. The characteristics of the epidermis and underlying tissues correlate with the level of ploidy in the Tephrocactus taxa studied. Introducción y objetivos: Tephrocactus es un género de Cactaceae perteneciente a la subfamilia Opuntioideae, con la mayoría de las especies endémicas de Argentina. Comprende matas con ramas laxas, formadas por artejos globosos, que muchas veces se desprenden fácilmente y generan nuevas plantas. La reproducción clonal está asociada a la ocurrencia de altos niveles de ploidía en el género. El objetivo de este trabajo fue comparar caracteres morfo-anatómicos de la epidermis y tejidos subyacentes de taxones de Tephrocactus con distintos niveles de ploidía (2n = 22, 44, 77, 88, 242 y 319) y evaluar dichos caracteres en un contexto filogenético. M&M: Se estudiaron la epidermis y tejidos subyacentes de taxones de Tephrocactus mediante el uso de técnicas histológicas clásicas. Se compararon estadísticamente las variables morfo-anatómicas y se mapearon en la filogenia del género. Resultados: Se determinaron la frecuencia estomática, la frecuencia de células epidérmicas propiamente dichas, el índice estomático, la longitud de los estomas y se analizaron los tejidos subyacentes con especial referencia a la forma, frecuencia y disposición de drusas. Todas las variables estudiadas mostraron diferencias estadísticamente significativas entre los taxones. Se observó una relación positiva entre niveles de ploidía y tamaño de todos los tipos de células epidérmicas y de las drusas. Conclusiones: El ancestro común del grupo tendría estomas pequeños, una frecuencia de células epidérmicas propiamente dichas intermedia y drusas en su hipodermis. Las características de la epidermis y tejidos subyacentes se correlacionan con el nivel de ploidía en los taxones de Tephrocactus estudiados. Sociedad Argentina de Botánica 2022-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/34773 10.31055/1851.2372.v57.n1.34773 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 57 No. 1 (2022): March Boletín de la Sociedad Argentina de Botánica; Vol. 57 Núm. 1 (2022): Marzo Boletín de la Sociedad Argentina de Botánica; v. 57 n. 1 (2022): Marzo 1851-2372 0373-580X 10.31055/1851.2372.v57.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/34773/37069 https://revistas.unc.edu.ar/index.php/BSAB/article/view/34773/37071 Derechos de autor 2022 Ivana Di Dio, Laura B. Stiefkens, Laura M. Las Peñas https://creativecommons.org/licenses/by-nc-nd/4.0 |