10.5061/DRYAD.3C769
Moyers, Brook T.
University of British Columbia
Rieseberg, Loren H.
Indiana University Bloomington
University of British Columbia
Data from: Remarkable life history polymorphism may be evolving under
divergent selection in the silverleaf sunflower
Dryad
dataset
2016
Anthropocene
Helianthus praecox
Helianthus debilis
Helianthus annuus
Life History Evolution
Contemporary Evolution
Helianthus argophyllus
2016-06-13T15:32:57Z
2016-06-13T15:32:57Z
en
https://doi.org/10.1111/mec.13723
743075 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Substantial intraspecific variation in life history is rare and
potentially a signal of incipient ecological speciation, if variation is
driven by geographically heterogenous natural selection. We present the
first report of extensive life history polymorphism in Helianthus
argophyllus, the silverleaf sunflower, and examine evidence for its
evolution by divergent selection. In 18 populations sampled from across
the species range and grown in a common garden, most quantitative traits
covaried such that individuals could be assigned to two distinct life
history syndromes: tall and late flowering with small initial flowerheads,
or short and early flowering with larger initial flowerheads. Helianthus
argophyllus exhibits regional genetic structure, but this population
structure does not closely correspond with patterns of phenotypic
variation. The early-flowering syndrome is primarily observed in
populations from coastal barrier islands, while populations from the
nearby mainland coast, although geographically and genetically close, are
primarily late flowering. Additionally, several traits are more
differentiated among regions than expected based on neutral genetic
divergence (QST > FST), including the first principal component
score corresponding with life history syndrome. This discordance between
patterns of phenotypic and genetic variation suggests that divergent
selection is driving genetic differences in life history across the
species range. If so, the silverleaf sunflower may be in early stages of
ecological speciation.
2010 Common Garden PhenotypesThis is an excel spreadsheet that with two
tabs: one with the data and one with an explanation of the column headers
in the data sheet. This file includes all data for all individuals that
were grown and measured in my 2010 field experiment at the University of
British Columbia farm in Vancouver, BC, Canada. Please note that these
individuals were filtered in various ways for different analyses (e.g.
only those planted in the replicated family design, or excluding
individuals with putative hybrid ancestry). Please contact me if you need
further details or would like a filtered
dataset.common_gardenFINAL.xlsxSNP genotype dataThis is an excel
spreadsheet that with two tabs: one with the data and one with an
explanation of the column headers in the data sheet. This file includes
all data for all individuals that were genotyped using the Sequenom iPLEX
Gold technology for this study, including individuals from species other
than Helianthus argophyllus which were not included in the manuscript.
Please note that these individuals were filtered in various ways for
different analyses (e.g. only those planted in the replicated family
design, or excluding individuals with putative hybrid ancestry). Please
contact me if you need further details or would like a filtered
dataset.all_sequenom_data_forDryad.xlsxSequenom SNP marker metadataThis is
an excel spreadsheet that with two tabs: one with the data and one with an
explanation of the column headers in the data sheet. This file includes
data for all markers that were included in two panels of 40 by the
Sequenom iPLEX Gold technology for this study. Please note that these
markers were filtered for reliability and genotype call rate in the final
analyses. Please contact me if you need further details or would like a
filtered dataset.SNP_bylocus_data_forDryad.xlsx
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