10.5061/DRYAD.RD8FN
Wegier, Ana
National Autonomous University of Mexico
Piñeyro-Nelson, Alma
National Autonomous University of Mexico
Alarcón, Jesús
National Autonomous University of Mexico
Gálvez-Mariscal, Amanda
National Commission for the Knowledge and Use of Biodiversity
Álvarez-Buylla, Elena R.
National Autonomous University of Mexico
Piñero, Daniel
National Autonomous University of Mexico
Data from: Recent long-distance transgene flow conforms to historical
patterns of gene flow in wild cotton (Gossypium hirsutum) at its center of
origin
Dryad
dataset
2011
Biotechnology
Gossypium hirsutum
Genetically modified organisms
2011-07-20T15:29:45Z
2011-07-20T15:29:45Z
en
https://doi.org/10.1111/j.1365-294X.2011.05258.x
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Over 95% of the currently cultivated cotton was domesticated from
Gossypium hirsutum, which originated and diversified in Mexico. Population
dynamics and genetic studies of this species at its center of origin and
diversification are lacking, although they are critical for cotton
conservation and breeding. We investigated the actual and potential
distribution of wild cotton populations, as well as the contribution of
historical and recent gene flow in shaping cotton genetic diversity and
structure. We evaluated historical gene flow using chloroplast
microsatellites and recent gene flow through the assessment of transgene
presence in wild cotton populations, exploiting the fact that genetically
modified cotton has been planted in the North of Mexico since 1996.
Assessment of geographic structure through Bayesian spatial analysis, BAPS
and Genetic Algorithm for Rule-set Production (GARP), suggests that G.
hirsutum seems to conform to a metapopulation scheme, with eight distinct
metapopulations. Despite evidence for long-distance gene flow, genetic
variation among the metapopulations of G. hirsutum is high (He = 0.894 +/-
0.01). We identified 46 different haplotypes, 78% of which are unique to a
particular metapopulation, in contrast to a single haplotype detected in
cotton cultivars. Recent gene flow was also detected (m = 66/270 = 0.24),
with four out of eight metapopulations having transgenes. We discuss the
implications for the data presented here with respect to the conservation
and future breeding of cotton populations and genetic diversity at its
center of crop origin.
BASE_WEGIER2011_DRYADHaplotypes description and frequencies of haplotypes
per population
Mexico
Mesoamerica