Artículo
How important was polyploidy in the diversification of herbs in the Chaquean Domain? The case of Turnera sidoides autopolyploid complex (Passifloraceae, Turneroideae)
Solis Neffa, Viviana Griselda
; Moreno, Ercilia Maria Sara
; Silva, Gisella Carolina
; Kovalsky, Ivana Evelìn
; Via Do Pico, Gisela Mariel
; Almirón, Noelia Emilia Alejandrina
; Roggero Luque, Juan Manuel
; Fernández, Silvia Andrea
; Paredes, Esteban Nadal
; Chalup, Laura María Isabel
; Robledo Dobladez, Germán Ariel
; Seijo, José Guillermo
Fecha de publicación:
10/2021
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Botanical Journal of The Linnean Society
ISSN:
0024-4074
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The evolutionary processes that shape the unique biodiversity of the Neotropical Chaquean Domain are still poorly understood, and choosing an appropriate model to address evolutionary questions is essential for understanding the current patterns of Chaquean diversity. We used the Turnera sidoides autopolyploid complex as a model to assess current and past environmental factors and the processes that shaped and maintain its intraspecific variation in the Chaquean Domain. Based on current and past niche modelling, cytogeographical and genetic divergence analyses, we provide strong evidence that the T. sidoides complex has been in an active process of intraspecific allopatric diversification at the diploid level since the early Pleistocene. Further diversification of the complex involved the emergence of independent polyploid series in each morphologically divergent lineage. Cytotypes in each series do not differ in diagnostic morphological traits, but are reproductively isolated and have different ecological requirements. Currently, each subspecies/morphotype and cytotype are true species according to the biological, evolutionary and ecological concepts; however, they are still considered to be the same morphological species. Our study has clarified the effect of the complex processes of diversification occurring in the Chaquean Domain on T. sidoides and that much diversity is overlooked when only the morphological species concept is considered when estimating the diversity of Neotropical ecoregions.
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Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Solis Neffa, Viviana Griselda; Moreno, Ercilia Maria Sara; Silva, Gisella Carolina; Kovalsky, Ivana Evelìn; Via Do Pico, Gisela Mariel; et al.; How important was polyploidy in the diversification of herbs in the Chaquean Domain? The case of Turnera sidoides autopolyploid complex (Passifloraceae, Turneroideae); Wiley Blackwell Publishing, Inc; Botanical Journal of The Linnean Society; 199; 1; 10-2021; 286-311
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