| Texto completo | |
| Autor(es): |
Palma-Silva, Clarisse
[1, 2]
;
Cozzolino, Salvatore
[3, 4]
;
Paggi, Gecele Matos
[5]
;
Lexer, Christian
[6, 7]
;
Wendt, Tania
[8]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] UNESP, IB, Dept Ecol, BR-13506900 Rio Claro, SP - Brazil
[2] Inst Bot, BR-04301012 Sao Paulo, SP - Brazil
[3] Univ Naples Federico II, Dipartimento Biol, I-80126 Naples - Italy
[4] CNR, Ist Protez Sostenibile Piante, I-50019 Florence - Italy
[5] UFMS, CPAN, Ciencias Biol, BR-79304902 Corumba, MS - Brazil
[6] Univ Fribourg, Dept Biol, CH-1700 Fribourg - Switzerland
[7] Univ Vienna, Dept Bot & Biodivers Res, A-1030 Vienna - Austria
[8] Univ Fed Rio de Janeiro, IB, CCS, Dept Bot, BR-21941590 Rio de Janeiro, RJ - Brazil
Número total de Afiliações: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AMERICAN JOURNAL OF BOTANY; v. 102, n. 5, p. 758-764, MAY 2015. |
| Citações Web of Science: | 14 |
| Resumo | |
Premise of the study: The mating system is an important component of the complex set of reproductive isolation barriers causing plant speciation. However, empirical evidence showing that the mating system may promote reproductive isolation in co-occurring species is limited. The mechanisms by which the mating system can act as a reproductive isolation barrier are also largely unknown. Methods: Here we studied progeny arrays genotyped with microsatellites and patterns of stigma-anther separation (herkogamy) to understand the role of mating system shifts in promoting reproductive isolation between two hybridizing taxa with porous genomes, Pitcairnia albiflos and P. staminea (Bromeliaceae). Key results: In P. staminea, we detected increased selfing and reduced herkogamy in one sympatric relative to two allopatric populations, consistent with mating system shifts in sympatry acting to maintain the species integrity of P. staminea when in contact with P. albiflos. Conclusions: Mating system variation is a result of several factors acting simultaneously in these populations. We report mating system shifts as one possible reproductive barrier between these species, acting in addition to numerous other prezygotic (i.e., flower phenology and pollination syndromes) and postzygotic barriers (Bateson-Dobzhansky-Muller genetic incompatibilities). (AU) | |
| Processo FAPESP: | 09/17411-8 - Especiação, isolamento reprodutivo e genética de populações em espécies de Bromeliaceae: implicações taxonômicas, evolutivas e conservacionistas |
| Beneficiário: | Clarisse Palma da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Programa BIOTA - Jovens Pesquisadores |
| 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 |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores |
| Processo FAPESP: | 10/20634-6 - Amplificação heteróloga e otimização de loci de microssatélites nucleares em espécies de Bromeliaceae. |
| Beneficiário: | Beatriz Zocoler de Almeida |
| Modalidade de apoio: | Bolsas no Brasil - Programa Capacitação - Treinamento Técnico |