Artículo
Uniparentality: Advantages for range expansion in diploid and diploid-autopolyploid species
Reutemann, Anna Verena
; Martínez, Eric Javier
; Schedler, Mara
; Daviña, Julio Rubén; Hojsgaard, Diego Hernan
; Honfi, Ana Isabel
Fecha de publicación:
12/2022
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
Uniparental reproduction, the capacity of an individual to produce offspring autonomously, is expected to facilitate range expansion of populations. Paspalum spp. reproduce uniparentally by sexual (self-fertility) and asexual (apomixis) reproduction and biparentally by sexual (self-sterility) reproduction. We evaluated the relationship between contrasting reproductive strategies (uni- and biparentality) and their impact on the colonizing ability and geographical range sizes of populations. We determined the cytotype composition of 16 populations of P. indecorum, P. cromyorhizon, P. pumilum and P. maculosum and assessed the sexual (self-fertile and self-sterile) and apomictic proportions by cyto-embryological analyses, fertility rates and seed flow cytometry. Data obtained regarding reproductive modes were compared to the distribution range of each cytotype and species. Sexual diploids with moderate degrees of self-fertility and mixed pollination syndromes showed wider distribution ranges than self-sterile diploids. In sexual diploids, increased rates of self-fertility relate to larger distribution areas. In agamic complexes, self-fertility reduces the differences in range sizes between biparental diploids and uniparental tetraploids. In such complexes, the range size of diploid cytotypes explains the range size and dispersal of apomictic tetraploids. Thus, uniparental reproduction via self-fertility and apomixis describes patterns of geographical parthenogenesis in South American species.
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Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos(IBS)
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Citación
Reutemann, Anna Verena; Martínez, Eric Javier; Schedler, Mara; Daviña, Julio Rubén; Hojsgaard, Diego Hernan; et al.; Uniparentality: Advantages for range expansion in diploid and diploid-autopolyploid species; Wiley Blackwell Publishing, Inc; Botanical Journal of The Linnean Society; 200; 4; 12-2022; 563-585
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