10.5061/DRYAD.TR69JS8
Shi, Jun
University of Tübingen
Macel, Mirka
University of Tübingen
Radboud University Nijmegen
Tielbörger, Katja
University of Tübingen
Verhoeven, Koen J.F.
Verhoeven, Koen J. F.
Nederlands Instituut voor Ecologie
Data from: Effects of admixture in native and invasive populations of
Lythrum salicaria
Dryad
dataset
2019
Lythrum salicaria
Heterosis
Purple Loosestrife
2019-02-14T00:00:00Z
2019-02-14T00:00:00Z
en
https://doi.org/10.1007/s10530-018-1707-2
67239 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Intraspecific hybridization between diverged populations can enhance
fitness via various genetic mechanisms. The benefits of such admixture
have been proposed to be particularly relevant in biological invasions,
when invasive populations originating from different source populations
are found sympatrically. However, it remains poorly understood if
admixture is an important contributor to plant invasive success and how
admixture effects compare between invasive and native ranges. Here, we
used experimental crosses in Lythrum salicaria, a species with
well-established history of multiple introductions to Eastern North
America, to quantify and compare admixture effects in native European and
invasive North American populations. We observed heterosis in
between-population crosses both in native and invasive ranges. However,
invasive-range heterosis was restricted to crosses between two different
Eastern and Western invasion fronts, whereas heterosis was absent in
geographically distant crosses within a single large invasion front. Our
results suggest that multiple introductions have led to already-admixed
invasion fronts, such that experimental crosses do not further increase
performance, but that contact between different invasion fronts further
enhances fitness after admixture. Thus, intra-continental movement of
invasive plants in their introduced range has the potential to boost
invasiveness even in well-established and successfully spreading invasive
species.
Phenotypic dataData from offspring of within-population,
between-population and between-region crosses of Lythrum salicaria plants
originating from North America or Western Europe, grown under
'dry' and 'wet' experimental greenhouse conditions.
Data are from individual plants. Information is included on cross type
(including parental plant identity) and experimental design (realblock
refers to spatial greenhouse blocking and timeblock refers to
time-separated
replications).primary_data.txtSAS_analysis_scriptStatistical analysis
script used for the statistical analyses presented in the manuscript. The
script takes the phenotypic data file as input and was written in SAS
version 9.4 for Windows.
Iowa
Potsdam Germany
Wageningen Netherlands
Tubingen Germany
New Jersey
Idaho