Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/53691
Title: Genetic diversity and differentiation in natural and reintroduced populations of Bencomia exstipulata and comparisons with B-caudata (Rosaceae) in the Canary Islands: an analysis using microsatellites
Authors: González Pérez,Miguel Ángel 
Lledo, M. Dolores
Lexer, Christian
Fay, Michael
Marrero, Manuel
Bañares-Baudet, Angel
Carqué, Eduardo
Sosa, Pedro A. 
UNESCO Clasification: 241714 Genética vegetal
Keywords: Allotetraploid
Autotetraploid
Bencomia caudata
Conservation genetics
Endangered species, et al
Issue Date: 2009
Publisher: 0024-4074
Project: Interreg Iii B: Red de Bancos de Biodiversidad de la Flora Macaronesica (Biomabanc) 
Journal: Botanical Journal of the Linnean Society 
Abstract: Variation at five polymorphic microsatellite loci was used to investigate genetic diversity and differentiation of two tetraploid Canarian endemics, Bencomia exstipulata and B. caudata. Data were analysed and are discussed in terms of tetrasomic (autotetraploid) and disomic (allotetraploid) inheritance. In both cases, genetic diversity values were similar to those described in other tetraploid plant species. High genetic differentiation between the only two described natural populations of B. exstipulata was detected (FST = 0.411). Bayesian cluster analysis revealed a geographical structure with distinct genetic groups from each island. High genetic differentiation and low genetic diversity of the B. exstipulata population from Tenerife suggest a recent population bottleneck, perhaps caused by the most recent major volcanic eruption, for this natural locality. This may be heightened by possible inbreeding depression and the monoecy of these species. Polymorphic microsatellite loci were also tested across all species in the Bencomia alliance. These reliably amplified the target sequence, suggesting a high degree of conservation of the sequences flanking the microsatellites.
URI: http://hdl.handle.net/10553/50016
ISSN: 0024-4074
DOI: 10.1111/j.1095-8339.2009.00986.x
Source: Botanical Journal of the Linnean Society [ISSN 0024-4074], v. 160 (4), p. 429-441
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