« Previous AbstractPrimary structure of a pheromone-binding protein from Antheraea pernyi: homologies with other ligand-carrying proteins    Next AbstractVolatiles released by Beauveria bassiana induce oviposition behavior in the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) »

Am J Bot

Title:		Reproductive isolation among three sympatric Achimenes species: pre- and post-pollination components
Author(s):		Ramirez-Aguirre E; Marten-Rodriguez S; Quesada-Avila G; Quesada M; Martinez-Diaz Y; Oyama K; Espinosa-Garcia FJ;
Address:		"Laboratorio Nacional de Analisis y Sintesis Ecologica (LANASE), Escuela Nacional de Estudios Superiores (ENES), Unidad Morelia, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan, C.P. 58190, Mexico. Posgrado en Ciencias Biologicas, Universidad Nacional Autonoma de Mexico. Unidad de Posgrado, Coordinacion del Posgrado en Ciencias Biologicas. Edificio D, 1 masculine Piso. Circuito de Posgrados, Ciudad Universitaria Del., Coyoacan, C. P. 04510, Mexico D.F. Universidad Nacional de Costa Rica, Heredia, Costa Rica. Avenida 1, Calle 9. Apartado Postal, 86-3000. Instituto de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico, Antigua Carretera a Patzcuaro 8701, Morelia, Michoacan, C.P. 58190, Mexico"
Journal Title:		Am J Bot
Year:		2019
Volume:		20190712
Issue:		7
Page Number:		1021 - 1031
DOI:		10.1002/ajb2.1324
ISSN/ISBN:		1537-2197 (Electronic) 0002-9122 (Linking)
Abstract:		"PREMISE: Closely related species occurring in sympatry may experience the negative consequences of interspecific pollen transfer if reproductive isolation (RI) barriers are not in place. We evaluated the importance of pre- and post-pollination RI barriers in three sympatric species of Achimenes (Gesneriaceae), including ecogeographic, phenological, floral isolation, self-pollination, and hybrid viability (fruit and seed set). METHODS: We recorded geographic distribution throughout species ranges and assessed flowering phenology and pollinator visitation at one site in central Mexico. In the greenhouse, we measured floral traits involved in RI and quantified fruit and seed set for from self, intraspecific, and interspecific crosses. RESULTS: Ecogeographic barriers were important in RI, but under sympatry, phenological and floral barriers contributed more to total RI. Phenological RI varied between species and years, while floral RI was 100% effective at preventing interspecific visitation. Species showed differences in floral morphology, color, and scents associated with specialized pollination systems (A. antirrhina-hummingbirds, A. flava-bees, A. patens-butterflies); heterospecific visitation events were restricted to rare secondary pollinators. Hybrid crosses consistently yielded progeny in lower numbers than intraspecific crosses. CONCLUSIONS: This study indicated that neither autogamy nor early post-pollination barriers prevent interspecific pollen flow between Achimenes species. However, floral isolation, acting through a combination of attraction and reward traits, consistently ensures specificity of the pollination system. These results suggest that selection on floral traits to reduce the costs of hybrid progeny production may have played a role in evolution or maintenance of specialized pollination systems in Achimenes"
Keywords:		"Animals Bees Birds Butterflies Flowers/*physiology Hybridization, Genetic *Lamiales Odorants Plant Nectar/metabolism *Pollination *Reproductive Isolation Self-Fertilization Sugars/metabolism *Sympatry Volatile Organic Compounds/metabolism Gesneriaceae flo;"
Notes:		"MedlineRamirez-Aguirre, Erandi Marten-Rodriguez, Silvana Quesada-Avila, Gabriela Quesada, Mauricio Martinez-Diaz, Yesenia Oyama, Ken Espinosa-Garcia, Francisco J eng IA208416/Universidad Nacional Autonoma de Mexico/International IA207618/Universidad Nacional Autonoma de Mexico/International IV200418/Universidad Nacional Autonoma de Mexico/International 417RT0527/Programa Iberoamericana de Ciencia y Tecnologia para el Desarrollo RED CYTED-SEPODI/International 271449/CONACyT-Mexico/International 280505/CONACyT-Mexico/International 293701/CONACyT-Mexico/International 299033/CONACyT-Mexico/International 271432/Proyecto Repositorio Institucional/International 155016/Proyecto Repositorio Institucional/International 413896/261462/Proyecto Repositorio Institucional/International Research Support, Non-U.S. Gov't 2019/07/13 Am J Bot. 2019 Jul; 106(7):1021-1031. doi: 10.1002/ajb2.1324. Epub 2019 Jul 12"