Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy

It is generally accepted that polyploids have downsized basic genomes rather than additive values with respect to their related diploids. Changes in genome size have been reported in correlation with several biological characteristics. About 75 % of around 350 species recognized for Paspalum (Poacea...

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Detalles Bibliográficos
Autores principales: Galdeano, Florencia, Urbani, Mario Hugo, Sartor, María Esperanza, Honfi, Ana Isabel, Espinoza, Francisco, Quarin, Camilo Luis
Formato: Artículo
Lenguaje:Inglés
Publicado: Springer 2021
Materias:
1Cx-value
2C-value
Flow cytometry
Relative DNA content
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28599
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28599
record_format dspace
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 1Cx-value
2C-value
Flow cytometry
Relative DNA content
spellingShingle 1Cx-value
2C-value
Flow cytometry
Relative DNA content
Galdeano, Florencia
Urbani, Mario Hugo
Sartor, María Esperanza
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
topic_facet 1Cx-value
2C-value
Flow cytometry
Relative DNA content
description It is generally accepted that polyploids have downsized basic genomes rather than additive values with respect to their related diploids. Changes in genome size have been reported in correlation with several biological characteristics. About 75 % of around 350 species recognized for Paspalum (Poaceae) are polyploid and most polyploids are apomictic. Multiploid species are common with most of them bearing sexual diploid and apomictic tetraploid or other ploidy levels. DNA content in the embryo and the endosperm was measured by flow cytometry in a seedby-seed analysis of 47 species including 77 different entities. The relative DNA content of the embryo informed the genome size of the accession while the embryo:endosperm ratio of DNA content revealed its reproductive mode. The genome sizes (2C-value) varied from 0.5 to 6.5 pg and for 29 species were measured for the first time. Flow cytometry provided new information on the reproductive mode for 12 species and one botanical variety and supplied new data for 10 species concerning cytotypes reported for the first time. There was no significant difference between the mean basic genome sizes (1Cx-values) of 32 sexual and 45 apomictic entities. Seventeen entities were diploid and 60 were polyploids with different degrees. There were no clear patterns of changes in 1Cx-values due to polyploidy or reproductive systems, and the existing variations are in concordance with subgeneric taxonomical grouping.
format Artículo
author Galdeano, Florencia
Urbani, Mario Hugo
Sartor, María Esperanza
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author_facet Galdeano, Florencia
Urbani, Mario Hugo
Sartor, María Esperanza
Honfi, Ana Isabel
Espinoza, Francisco
Quarin, Camilo Luis
author_sort Galdeano, Florencia
title Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
title_short Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
title_full Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
title_fullStr Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
title_full_unstemmed Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
title_sort relative dna content in diploid, polyploid, and multiploid species of paspalum (poaceae) with relation to reproductive mode and taxonomy
publisher Springer
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28599
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