The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species
Exploring the genetic diversity and reproductive strategies of Paspalum species is essential for advancing forage grass improvement. We compared morpho-phenological, molecular, and genotypic variation in five tetraploid Paspalum species with contrasting mating systems and reproductive modes. Contrar...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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MDPI
2025
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| Online Access: | http://hdl.handle.net/20.500.12123/21363 https://www.mdpi.com/2223-7747/14/3/476 https://doi.org/10.3390/plants14030476 |
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| author | Reutemann, Verena Schedler, Mara Hojsgaard, Diego H. Brugnoli, Elsa Andrea Zilli, Alex Leonel Acuña, Carlos Alberto Honfi, Ana I. Martínez, Eric Javier |
| author_browse | Acuña, Carlos Alberto Brugnoli, Elsa Andrea Hojsgaard, Diego H. Honfi, Ana I. Martínez, Eric Javier Reutemann, Verena Schedler, Mara Zilli, Alex Leonel |
| author_facet | Reutemann, Verena Schedler, Mara Hojsgaard, Diego H. Brugnoli, Elsa Andrea Zilli, Alex Leonel Acuña, Carlos Alberto Honfi, Ana I. Martínez, Eric Javier |
| author_sort | Reutemann, Verena |
| collection | INTA Digital |
| description | Exploring the genetic diversity and reproductive strategies of Paspalum species is essential for advancing forage grass improvement. We compared morpho-phenological, molecular, and genotypic variation in five tetraploid Paspalum species with contrasting mating systems and reproductive modes. Contrary to previous findings, selfing (Paspalum regnellii and P. urvillei) and outcrossing (P. durifolium and P. ionanthum) species exhibited similar phenotypic diversity patterns, with low intrapopulation variability and no morphological differentiation among populations. The apomictic species (P. intermedium) exhibited low intrapopulation phenotypic variation but high population differentiation, indicative of genetic drift and local adaptation. Outcrossing species showed greater intrapopulation genotypic variation than selfing species, which displayed a high population structure due to restricted pollen migration. The apomictic species exhibited the lowest intrapopulation molecular diversity, forming uniclonal populations with high interpopulation differentiation, highlighting the fixation of distinct gene pools via apomixis. This is the first report about genetic diversity in populations of sexual allopolyploid species of Paspalum. Population structure in these allotetraploid Paspalum species is primarily shaped by how reproductive modes, mating systems, and geographic distribution influence gene flow via pollen and seeds. Our findings contribute significantly to the conservation and genetic improvement of forage grasses, particularly for developing cultivars with enhanced adaptability and productivity. |
| format | info:ar-repo/semantics/artículo |
| id | INTA21363 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | INTA213632025-02-20T10:41:41Z The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species Reutemann, Verena Schedler, Mara Hojsgaard, Diego H. Brugnoli, Elsa Andrea Zilli, Alex Leonel Acuña, Carlos Alberto Honfi, Ana I. Martínez, Eric Javier Paspalum Variación Genética Apomixis Cruzamiento Estructura de la Población Autofecundación Genetic Variation Cross-breeding Population Structure Selfing Exploring the genetic diversity and reproductive strategies of Paspalum species is essential for advancing forage grass improvement. We compared morpho-phenological, molecular, and genotypic variation in five tetraploid Paspalum species with contrasting mating systems and reproductive modes. Contrary to previous findings, selfing (Paspalum regnellii and P. urvillei) and outcrossing (P. durifolium and P. ionanthum) species exhibited similar phenotypic diversity patterns, with low intrapopulation variability and no morphological differentiation among populations. The apomictic species (P. intermedium) exhibited low intrapopulation phenotypic variation but high population differentiation, indicative of genetic drift and local adaptation. Outcrossing species showed greater intrapopulation genotypic variation than selfing species, which displayed a high population structure due to restricted pollen migration. The apomictic species exhibited the lowest intrapopulation molecular diversity, forming uniclonal populations with high interpopulation differentiation, highlighting the fixation of distinct gene pools via apomixis. This is the first report about genetic diversity in populations of sexual allopolyploid species of Paspalum. Population structure in these allotetraploid Paspalum species is primarily shaped by how reproductive modes, mating systems, and geographic distribution influence gene flow via pollen and seeds. Our findings contribute significantly to the conservation and genetic improvement of forage grasses, particularly for developing cultivars with enhanced adaptability and productivity. EEA Montecarlo Fil: Reutemann, Verena. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina Fil: Schedler, Mara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Hojsgaard, Diego. Leibniz Institute of Plant Genetics and Crop Plant Research (IPK); Alemania Fil: Brugnoli, Elsa. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina Fil: Acuña, Carlos. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina Fil: Honfi, Ana. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Instituto de Biología Subtropical. Programa de Estudios Florísticos y Genética Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología Subtropical. Programa de Estudios Florísticos y Genética Vegetal; Argentina Fil: Martínez, Eric Javier. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste. Grupo de Genética y Mejoramiento de Especies Forrajeras; Argentina 2025-02-20T10:23:33Z 2025-02-20T10:23:33Z 2025-02-06 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21363 https://www.mdpi.com/2223-7747/14/3/476 Reutemann, A. V., Schedler, M., Hojsgaard, D. H., Brugnoli, E. A., Zilli, A. L., Acuña, C. A., Honfi, A. I., & Martínez, E. J. (2025). The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species. Plants, 14(3), 476. https://doi.org/10.3390/plants14030476 2223-7747 https://doi.org/10.3390/plants14030476 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf MDPI Plants 14 (3) : 476. (February 2025) |
| spellingShingle | Paspalum Variación Genética Apomixis Cruzamiento Estructura de la Población Autofecundación Genetic Variation Cross-breeding Population Structure Selfing Reutemann, Verena Schedler, Mara Hojsgaard, Diego H. Brugnoli, Elsa Andrea Zilli, Alex Leonel Acuña, Carlos Alberto Honfi, Ana I. Martínez, Eric Javier The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title | The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title_full | The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title_fullStr | The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title_full_unstemmed | The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title_short | The Role of Reproductive Modes in Shaping Genetic Diversity in Polyploids: A Comparative Study of Selfing, Outcrossing, and Apomictic Paspalum Species |
| title_sort | role of reproductive modes in shaping genetic diversity in polyploids a comparative study of selfing outcrossing and apomictic paspalum species |
| topic | Paspalum Variación Genética Apomixis Cruzamiento Estructura de la Población Autofecundación Genetic Variation Cross-breeding Population Structure Selfing |
| url | http://hdl.handle.net/20.500.12123/21363 https://www.mdpi.com/2223-7747/14/3/476 https://doi.org/10.3390/plants14030476 |
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