| Full text | |
| Author(s): |
Palma-Silva, Clarisse
[1, 2]
;
Cozzolino, Salvatore
[3, 4]
;
Paggi, Gecele Matos
[5]
;
Lexer, Christian
[6, 7]
;
Wendt, Tania
[8]
Total Authors: 5
|
| Affiliation: | [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
Total Affiliations: 8
|
| Document type: | Journal article |
| Source: | AMERICAN JOURNAL OF BOTANY; v. 102, n. 5, p. 758-764, MAY 2015. |
| Web of Science Citations: | 14 |
| Abstract | |
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) | |
| FAPESP's process: | 09/17411-8 - Speciation, reproductive isolation, and population genetics in species of Bromeliaceae family: implications for taxonomy, evolution and conservation |
| Grantee: | Clarisse Palma da Silva |
| Support Opportunities: | Scholarships in Brazil - BIOTA - Young Researchers |
| FAPESP's process: | 09/52725-3 - Speciation, reproductive isolation, and population genetics in species of Bromeliaceae family: implications for taxonomy, evolution and conservation |
| Grantee: | Clarisse Palma da Silva |
| Support Opportunities: | BIOTA-FAPESP Program - Young Investigators Grants |