Artículo
Species diversification in the lowlands of mid-latitude South America: Turnera sidoides subsp. carnea as a case study
Moreno, Ercilia Maria Sara
; Via Do Pico, Gisela Mariel
; Kovalsky, Ivana Evelìn
; Roggero Luque, Juan Manuel
; Seijo, José Guillermo
; Solis Neffa, Viviana Griselda
Fecha de publicación:
07/2021
Editorial:
Academia Brasileira de Ciencias
Revista:
Anais da Academia Brasileira de Ciencias
ISSN:
0001-3765
e-ISSN:
1678-2690
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The lowlands of mid-latitude South America comprise complex temperate ecoregions characterized by a unique biodiversity. However, the processes responsible for shaping its species diversity are still largely unknown. Turnera sidoides subsp. carnea is a variable subspecies occurring in the lowlands of northeastern Argentina and Uruguay, extending to southern Paraguay and Brazil. It constitutes a good model to perform evolutionary studies. Here we used an integrative approach to understand the process of diversification within this subspecies and to increase the knowledge concerning patterns and processes responsible for shaping the species diversity in the temperate lowlands of South America. The results provided strong evidences that this subspecies is an autopolyploid complex per se, being in an active process of intrasubspecific diversification. Morphological and genetic data show that the diversity of T. sidoides subsp. carnea is in congruence with the great past and present abiotic and biotic variability of the mid-latitude South American lowlands. The evolutionary history of this subspecies is consistent with past fragmentation and allopatric differentiation at diploid level. Geographic isolation and local adaptation would have promoted strong morphological, ecological, and genetic differentiation, resulting in two morphotypes and different genetic groups indicative of incipient speciation.
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Licencia
Identificadores
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Moreno, Ercilia Maria Sara; Via Do Pico, Gisela Mariel; Kovalsky, Ivana Evelìn; Roggero Luque, Juan Manuel; Seijo, José Guillermo; et al.; Species diversification in the lowlands of mid-latitude South America: Turnera sidoides subsp. carnea as a case study; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 93; 3; 7-2021; 1-26
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