10.5061/DRYAD.R69G1
Ferrero, Victoria
University of Toronto
University of Vigo
Barrett, Spencer C. H.
University of Toronto
Castro, Sílvia
University of Coimbra
Caldeirinha, Patrícia
University of Coimbra
Navarro, Luis
University of Vigo
Loureiro, João
University of Coimbra
Rodríguez-Echeverría, Susana
University of Coimbra
Data from: Invasion genetics of the Bermuda buttercup (Oxalis pes-caprae):
complex intercontinental patterns of genetic diversity, polyploidy and
heterostyly characterize both native and introduced populations.
Dryad
dataset
2014
Plant Mating Systems
Oxalis pes-caprae
present
2014-12-30T20:08:08Z
2014-12-30T20:08:08Z
en
https://doi.org/10.1111/mec.13056
94166 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Genetic diversity in populations of invasive species is influenced by a
variety of factors including reproductive systems, ploidy level,
stochastic forces associated with colonization and multiple introductions
followed by admixture. Here, we compare genetic variation in native and
introduced populations of the clonal plant Oxalis pes-caprae to
investigate the influence of reproductive mode and ploidy on levels of
diversity. This species is a tristylous geophyte native to South Africa.
Invasive populations throughout much of the introduced range are composed
of a sterile clonal pentaploid short-styled form. We examined morph
ratios, ploidy level, reproductive mode and genetic diversity at nuclear
microsatellite loci in 10 and 12 populations from South Africa and the
Western Mediterranean region, respectively. Flow cytometry confirmed
earlier reports of diploids and tetraploids in the native range, with a
single population containing pentaploid individuals. Introduced
populations were composed mainly of pentaploids, but sexual tetraploids
were also found. There was clear genetic differentiation between ploidy
levels, but sexual populations from both regions were not significantly
different in levels of diversity. Invasive populations of the pentaploid
exhibited dramatically reduced levels of diversity but were not
genetically uniform. The occurrence of mixed ploidy levels and stylar
polymorphism in the introduced range is consistent with multiple
introductions to the Western Mediterranean. This inference was supported
by variation patterns at microsatellite loci. Our study indicates that
some invasive populations of Oxalis pes-caprae are not entirely clonal, as
often assumed, and multiple introductions and recombination have the
potential to increase genetic variation in the introduced range.
Oxalis_pes-caprae_SSRRange, population, individual code, morph and ploidy
level, together with microsatellite data for Oxalis pes-caprae
individuals. Columns are separated by TABs. Due to the polyploid
constitution of these taxa, multiple alleles per individual and locus were
scored.Oxalis_pes-caprae_FCMPloidy level of Oxalis pes-caprae populations
investigated in this study. The sample size, genome size estimates (in pg)
using flow cytometry and minimum (Min) and maximum (Max) genome size
estimates are provided for each population and ploidy level (2x, diploid;
4x, tetraploid; 5x, pentaploid).Oxalis pes-caprae neighbor-joining
treeTree output from a neighbor-joining distance analysis based on
dissimilarity matrix of 380 individuals of Oxalis pes-caprae and seven SSR
markers. The format is a nexus tree file format and the analyses were
carried in the package 'ape' (Paradis et al. 2004) in R.Oxalis
pes-caprae_njtree_nex
South Africa
Western Mediterranean region