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Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)

Stylosanthes (Papilionoideae, Leguminosae) is a predominantly Neotropical genus with ~48 species that include worldwide important forage species. This study presents the chromosome number and morphology of eight species of the genus Stylosanthes (S. acuminata, S. gracilis, S. grandifolia, S. guianen...

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Autores principales: Franco, Ana Luiza, Figueredo, Amanda, Pereira, Lívia de Moraes, de Sousa, Saulo Marçal, Souza, Gustavo, Carvalho, Marcelo Ayres, Simon, Marcelo F., Viccini, Lyderson Facio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Genética 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7197990/
https://www.ncbi.nlm.nih.gov/pubmed/31429856
http://dx.doi.org/10.1590/1678-4685-GMB-2018-0250
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author Franco, Ana Luiza
Figueredo, Amanda
Pereira, Lívia de Moraes
de Sousa, Saulo Marçal
Souza, Gustavo
Carvalho, Marcelo Ayres
Simon, Marcelo F.
Viccini, Lyderson Facio
author_facet Franco, Ana Luiza
Figueredo, Amanda
Pereira, Lívia de Moraes
de Sousa, Saulo Marçal
Souza, Gustavo
Carvalho, Marcelo Ayres
Simon, Marcelo F.
Viccini, Lyderson Facio
author_sort Franco, Ana Luiza
collection PubMed
description Stylosanthes (Papilionoideae, Leguminosae) is a predominantly Neotropical genus with ~48 species that include worldwide important forage species. This study presents the chromosome number and morphology of eight species of the genus Stylosanthes (S. acuminata, S. gracilis, S. grandifolia, S. guianensis, S. hippocampoides, S. pilosa, S. macrocephala, and S. ruellioides). In addition, staining with CMA and DAPI, in situ hybridization with 5S and 35S rDNA probes, and estimation of DNA content were performed. The interpretation of Stylosanthes chromosome diversification was anchored by a comparison with the sister genus Arachis and a dated molecular phylogeny based on nuclear and plastid loci. Stylosanthes species showed 2n = 20, with low cytomolecular diversification regarding 5S rDNA, 35S rDNA, and genome size. Arachis has a more ancient diversification (~7 Mya in the Pliocene) than the relatively recent Stylosanthes (~2 Mya in the Pleistocene), and it seems more diverse than its sister lineage. Our data support the idea that the cytomolecular stability of Stylosanthes in relation to Arachis could be a result of its recent origin. The recent diversification of Stylosanthes could also be related to the low morphological differentiation among species, and to the recurrent formation of allopolyploid complexes.
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spelling pubmed-71979902020-05-08 Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae) Franco, Ana Luiza Figueredo, Amanda Pereira, Lívia de Moraes de Sousa, Saulo Marçal Souza, Gustavo Carvalho, Marcelo Ayres Simon, Marcelo F. Viccini, Lyderson Facio Genet Mol Biol Plant Genetics Stylosanthes (Papilionoideae, Leguminosae) is a predominantly Neotropical genus with ~48 species that include worldwide important forage species. This study presents the chromosome number and morphology of eight species of the genus Stylosanthes (S. acuminata, S. gracilis, S. grandifolia, S. guianensis, S. hippocampoides, S. pilosa, S. macrocephala, and S. ruellioides). In addition, staining with CMA and DAPI, in situ hybridization with 5S and 35S rDNA probes, and estimation of DNA content were performed. The interpretation of Stylosanthes chromosome diversification was anchored by a comparison with the sister genus Arachis and a dated molecular phylogeny based on nuclear and plastid loci. Stylosanthes species showed 2n = 20, with low cytomolecular diversification regarding 5S rDNA, 35S rDNA, and genome size. Arachis has a more ancient diversification (~7 Mya in the Pliocene) than the relatively recent Stylosanthes (~2 Mya in the Pleistocene), and it seems more diverse than its sister lineage. Our data support the idea that the cytomolecular stability of Stylosanthes in relation to Arachis could be a result of its recent origin. The recent diversification of Stylosanthes could also be related to the low morphological differentiation among species, and to the recurrent formation of allopolyploid complexes. Sociedade Brasileira de Genética 2020-03-06 /pmc/articles/PMC7197990/ /pubmed/31429856 http://dx.doi.org/10.1590/1678-4685-GMB-2018-0250 Text en Copyright © 2019, Sociedade Brasileira de Genética. https://creativecommons.org/licenses/by/4.0/ License information: This is an open-access article distributed under the terms of the Creative Commons Attribution License (type CC-BY), which permits unrestricted use, distribution and reproduction in any medium, provided the original article is properly cited.
spellingShingle Plant Genetics
Franco, Ana Luiza
Figueredo, Amanda
Pereira, Lívia de Moraes
de Sousa, Saulo Marçal
Souza, Gustavo
Carvalho, Marcelo Ayres
Simon, Marcelo F.
Viccini, Lyderson Facio
Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title_full Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title_fullStr Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title_full_unstemmed Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title_short Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)
title_sort low cytomolecular diversification in the genus stylosanthes sw. (papilionoideae, leguminosae)
topic Plant Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7197990/
https://www.ncbi.nlm.nih.gov/pubmed/31429856
http://dx.doi.org/10.1590/1678-4685-GMB-2018-0250
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