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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Variation in reproductive systems facilitates species boundaries of sympatric Vriesea (Bromeliaceae)

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Autor(es):
Neri, Jordana ; Wendt, Tania ; Leles, Bruno ; Dos Santos, Manoel Francisco ; Palma-Silva, Clarisse
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: Botanical Journal of the Linnean Society; v. 184, n. 2, p. 272-279, JUN 1 2017.
Citações Web of Science: 6
Resumo

Divergence in reproductive systems among plant species often involves changes in floral traits. The distance separating stigmas and anthers (herkogamy) directly affects the relative importance of reproduction by outcrossing vs. selfing reproduction and can impact the integrity of sympatric species. We studied the reproductive biology of two closely related Vriesea spp. and investigated the variation in herkogamy among sympatric and allopatric populations and their implication in mating system variation and reproductive isolation between sympatric sister species. Both species are self-compatible, but differ in reproductive systems. Reduction in herkogamy drives a higher incidence of selfing for V. scalaris, whereas V. simplex relies predominantly on outcrossing events. Manual interspecific crosses produced F1 hybrids and confirmed natural hybridization previously observed between these two species. The closer anther-stigma positioning may be related to a higher capacity for autonomous selfing and might be one possible reproductive barrier facilitating sympatric species coexistence. (AU)

Processo FAPESP: 09/52725-3 - Especiação, isolamento reprodutivo e genética de populações na família Bromeliaceae: implicações taxonômicas, evolutivas e conservacionistas
Beneficiário:Clarisse Palma da Silva
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Apoio a Jovens Pesquisadores
Processo FAPESP: 15/10778-4 - Mecanismos genéticos da adaptação ao crescimento em rochas metalíferas
Beneficiário:Bruno Pereira Leles
Linha de fomento: Bolsas no Brasil - Doutorado