Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America

Background and aims: Polystichum is represented in Argentina and Chile by11 species, which originated within the Austral South American and the Andeanlineages. The taxonomy of Polystichum is controversial because of its widespreadhybridization and complex patterns of reticulation. The aims of the pr...

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Autores principales: Morero, Rita Ema, Giorgis, Melisa Adriana, Barboza, Gloria Estela
Formato: Artículo revista
Lenguaje:Español
Publicado: Sociedad Argentina de Botánica 2022
Materias:
análisis morfométrico
anatomía
epidermis
lámina
pecíolo
Polystichum
rizoma
Anatomy
lamina
morphometric analyses
petiole
rhizome
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/36825
Aporte de:
Boletín de la Sociedad Argentina de Botánica de Universidad Nacional de Córdoba
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institution Universidad Nacional de Córdoba
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container_title_str Boletín de la Sociedad Argentina de Botánica
language Español
format Artículo revista
topic análisis morfométrico
anatomía
epidermis
lámina
pecíolo
Polystichum
rizoma
Anatomy
epidermis
lamina
morphometric analyses
petiole
Polystichum
rhizome
spellingShingle análisis morfométrico
anatomía
epidermis
lámina
pecíolo
Polystichum
rizoma
Anatomy
epidermis
lamina
morphometric analyses
petiole
Polystichum
rhizome
Morero, Rita Ema
Giorgis, Melisa Adriana
Barboza, Gloria Estela
Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
topic_facet análisis morfométrico
anatomía
epidermis
lámina
pecíolo
Polystichum
rizoma
Anatomy
epidermis
lamina
morphometric analyses
petiole
Polystichum
rhizome
author Morero, Rita Ema
Giorgis, Melisa Adriana
Barboza, Gloria Estela
author_facet Morero, Rita Ema
Giorgis, Melisa Adriana
Barboza, Gloria Estela
author_sort Morero, Rita Ema
title Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
title_short Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
title_full Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
title_fullStr Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
title_full_unstemmed Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America
title_sort comparative anatomy and morphometric analyses of polystichum (dryopteridaceae) from southern south america
description Background and aims: Polystichum is represented in Argentina and Chile by11 species, which originated within the Austral South American and the Andeanlineages. The taxonomy of Polystichum is controversial because of its widespreadhybridization and complex patterns of reticulation. The aims of the present studyare: 1) to define morpho-anatomical characters that contribute to the differentiation of both lineages, 2) to improve the species delimitation.M&M: Morphological measurements and histological examinations under lightmicroscope, were made of fronds and rhizomes of nine Polystichum species(seven belong to the Austral South American Clade and two to the Andean Clade). Furthermore, 13 quantitative characters of 77 Austral South American herbarium specimens were included in two multivariate statistical procedures.Results: The main characters we found that separate the South American Australclade from the Andean species studied are: indusia, spinules of ultimate segmentsand edge of rhizomes and petioles scales. In the South American Austral clade, wefound shape and division of lamina, basal pinnae length, the number of pinnae pairsper lamina and the number of them with sori, and some anatomical features, suchas glandular hairs of indusia, circumendodermal band and petiole meristemeles number, are informative characters at the species level.Conclusions: For the first time, our study recovered anatomical and morphometricfeatures that consistently can be used to separate the nine Polystichum speciesinhabit southern South America.
publisher Sociedad Argentina de Botánica
publishDate 2022
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/36825
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spelling I10-R325-article-368252022-06-29T17:25:06Z Comparative anatomy and morphometric analyses of Polystichum (Dryopteridaceae) from southern South America Anatomía comparada y análisis morfométrico en especies de Polystichum (Dryopteridaceae) del sur de Sudamérica Morero, Rita Ema Giorgis, Melisa Adriana Barboza, Gloria Estela análisis morfométrico anatomía epidermis lámina pecíolo Polystichum rizoma Anatomy epidermis lamina morphometric analyses petiole Polystichum rhizome Background and aims: Polystichum is represented in Argentina and Chile by11 species, which originated within the Austral South American and the Andeanlineages. The taxonomy of Polystichum is controversial because of its widespreadhybridization and complex patterns of reticulation. The aims of the present studyare: 1) to define morpho-anatomical characters that contribute to the differentiation of both lineages, 2) to improve the species delimitation.M&M: Morphological measurements and histological examinations under lightmicroscope, were made of fronds and rhizomes of nine Polystichum species(seven belong to the Austral South American Clade and two to the Andean Clade). Furthermore, 13 quantitative characters of 77 Austral South American herbarium specimens were included in two multivariate statistical procedures.Results: The main characters we found that separate the South American Australclade from the Andean species studied are: indusia, spinules of ultimate segmentsand edge of rhizomes and petioles scales. In the South American Austral clade, wefound shape and division of lamina, basal pinnae length, the number of pinnae pairsper lamina and the number of them with sori, and some anatomical features, suchas glandular hairs of indusia, circumendodermal band and petiole meristemeles number, are informative characters at the species level.Conclusions: For the first time, our study recovered anatomical and morphometricfeatures that consistently can be used to separate the nine Polystichum speciesinhabit southern South America. Introducción y objetivos: Polystichum en Argentina y Chile, comprende 11 especiesoriginadas de los linajes: Sudamericano Austral y Andino. La taxonomía del géneroes conflictiva debido a la frecuente hibridación, asociada a patrones de especiación reticulada. El presente estudio tiene como objetivos: definir caracteres morfo-anatómicos que contribuyan a la diferenciación de los linajes y a la delimitación de nueve de los taxones que comprenden.M&M: Se realizaron mediciones exomorfológicas y análisis de la anatomía defrondes y rizomas de nueve especies de Polystichum (siete del clado AustralSudamericano y dos del Andino), usando microscopía óptica. En las especiesAustrales Sudamericanas se estudiaron 13 caracteres cuantitativos empleando 77especímenes de herbario, mediante análisis multivariados.Resultados: Los caracteres morfológicos que separan el clado SudamericanoAustral de Polystichum de las especies Andinas analizadas, son: los indusios, lasespínulas foliares y el margen de las escamas de rizomas y pecíolos. La formay división de la lámina, el número de pares de pinnas y la cantidad de ellas consoros, la longitud de las pinnas basales y características anatómicas como: pelosglandulares del indusio, banda circumendodermal y número de meristelas del pecíolo, son rasgos informativos a nivel específico del clado Sudamericano Austral.Conclusiones: Por primera vez, una combinación de atributos anatómicos,morfológicos y morfométricos han permitido separar de manera confiable los nueve Polystichum estudiados, demostrando su valor taxonómico. Sociedad Argentina de Botánica 2022-06-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/36825 10.31055/1851.2372.v57.n2.36825 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 57 No. 2 (2022): June Boletín de la Sociedad Argentina de Botánica; Vol. 57 Núm. 2 (2022): Junio Boletín de la Sociedad Argentina de Botánica; v. 57 n. 2 (2022): Junio 1851-2372 0373-580X 10.31055/1851.2372.v57.n2 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/36825/38007 https://revistas.unc.edu.ar/index.php/BSAB/article/view/36825/38008 Derechos de autor 2022 Rita E. Morero, Melisa A. Giorgis, Gloria E. Barboza https://creativecommons.org/licenses/by-nc-nd/4.0

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