10.5061/DRYAD.8657
Leinonen, Päivi H
University of Oulu
Remington, David L
University of North Carolina at Greensboro
Savolainen, Outi
University of Oulu
Data from: Local adaptation, phenotypic differentiation and hybrid fitness
in diverged natural populations of Arabidopsis lyrata
Dryad
dataset
2011
Reciprocal transplant experiment
experimental hybrids
Brassicaceae
Arabidopsis lyrata
2011-02-23T17:21:44Z
2011-02-23T17:21:44Z
en
https://doi.org/10.1111/j.1558-5646.2010.01119.x
120744 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Selection for local adaptation results in genetic differentiation in
ecologically important traits. In a perennial, outcrossing model plant
Arabidopsis lyrata, several differentiated phenotypic traits contribute to
local adaptation, as demonstrated by fitness advantage of the local
population at each site in reciprocal transplant experiments. Here we
compared fitness components, hierarchical total fitness and
differentiation in putatively ecologically important traits of plants from
two diverged parental populations from different continents in the native
climate conditions of the populations in Norway and in North Carolina
(NC), USA. Survival and number of fruits per inflorescence indicated local
advantage at both sites and aster life-history models provided additional
evidence for local adaptation also at the level of hierarchical total
fitness. Populations were also differentiated in flowering start date and
floral display. We also included reciprocal experimental F1 and F2 hybrids
to examine the genetic basis of adaptation. Surprisingly, the F2 hybrids
showed heterosis at the study site in Norway, likely because of a
combination of beneficial dominance effects from different traits. At the
NC site, hybrid fitness was mostly intermediate relative to the parental
populations. Local cytoplasmic origin was associated with higher fitness,
indicating that cytoplasmic genomes also may contribute to the evolution
of local adaptation.
Alyrata_NCAlyrata_Norway1Alyrata_Norway2