10.5061/DRYAD.8QP37
Kerwin, Rachel
University of California, Davis
Feusier, Julie
University of Utah
University of California, Davis
Corwin, Jason
University of California, Davis
Rubin, Matthew
University of Wyoming
Lin, Catherine
University of California, Davis
Muok, Alise
Cornell University
University of California, Davis
Larson, Brandon
Cornell University
University of California, Davis
Li, Baohua
University of California, Davis
Joseph, Bindu
University of California, Davis
Francisco, Marta
University of California, Davis
Copeland, Daniel
University of California, Davis
Weinig, Cynthia
University of Utah
Kliebenstein, Daniel J.
University of Copenhagen
Data from: Natural genetic variation in Arabidopsis thaliana defense
metabolism genes modulate field fitness
Dryad
dataset
2016
Arabidopsis thaliana
Natural Variation
2016-03-31T00:00:00Z
2016-03-31T00:00:00Z
en
https://doi.org/10.7554/eLife.05604
1675355 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Natural populations persist in complex environments, where biotic
stressors, such as pathogen and insect communities, fluctuate temporally
and spatially. These shifting biotic pressures generate heterogeneous
selective forces that can maintain standing natural variation within a
species. To directly test if genes containing causal variation for the
Arabidopsis thaliana defensive compounds, glucosinolates (GSL) control
field fitness and are therefore subject to natural selection, we conducted
a multi-year field trial using lines that vary in only specific causal
genes. Interestingly, we found that variation in these naturally
polymorphic GSL genes affected fitness in each of our environments but the
pattern fluctuated such that highly fit genotypes in one trial displayed
lower fitness in another and that no GSL genotype or genotypes
consistently out-performed the others. This was true both across locations
and within the same location across years. These results indicate that
environmental heterogeneity may contribute to the maintenance of GSL
variation observed within Arabidopsis thaliana.
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