2014
DOI: 10.1371/journal.pone.0099620
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Molecular Evolution of Candidate Genes for Crop-Related Traits in Sunflower (Helianthus annuus L.)

Abstract: Evolutionary analyses aimed at detecting the molecular signature of selection during crop domestication and/or improvement can be used to identify genes or genomic regions of likely agronomic importance. Here, we describe the DNA sequence-based characterization of a pool of candidate genes for crop-related traits in sunflower. These genes, which were identified based on homology to genes of known effect in other study systems, were initially sequenced from a panel of improved lines. All genes that exhibited a … Show more

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Cited by 11 publications
(15 citation statements)
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“…This may represent selection for different oil and nutritional properties or for more general modifications to growth habit and vigor. Previous work in sunflower has found evidence of selection acting on oil synthesis genes during domestication (Chapman & Burke, ), as well as on a small number of genes investigated on the basis of homology to domestication genes in other species (Blackman et al ., ; Mandel et al ., ), although we find little overlap with our candidate genes. Chapman et al .…”
Section: Discussionmentioning
confidence: 57%
“…This may represent selection for different oil and nutritional properties or for more general modifications to growth habit and vigor. Previous work in sunflower has found evidence of selection acting on oil synthesis genes during domestication (Chapman & Burke, ), as well as on a small number of genes investigated on the basis of homology to domestication genes in other species (Blackman et al ., ; Mandel et al ., ), although we find little overlap with our candidate genes. Chapman et al .…”
Section: Discussionmentioning
confidence: 57%
“…The vast majority of the SNPs exhibited the same pattern of evolution in both locations (Figure b; see detailed analyses in Figures and ), suggesting similar selective pressures at the two locations. Of 21 loci previously shown to be selected during sunflower domestication or improvement (Chapman et al., ; Mandel et al., ) that we assayed, 19 showed significant decreases in the frequency of the crop allele in both locations, with the remaining two showing significant decreases in North Dakota and nonsignificant decreases in Iowa (Table ).…”
Section: Resultsmentioning
confidence: 87%
“… a Significant evidence of selection during domestication or improvement (ML‐HKA test—Chapman et al., ; ML‐HKA test—Mandel et al., ). Loci from Chapman et al.…”
Section: Resultsmentioning
confidence: 99%
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“…Partially, this is due to the completion of sequencing of genomes of major domesticated mammals, which provided tools necessary for such an inquiry. Quite a few studies were published that looked for "domestication signature" within the domesticated genomes [1][2][3][4]. There has been launched an international consortium [5], whose main task is creation of a comprehensive catalogue of functional elements within domesticated genomes.…”
Section: Introductionmentioning
confidence: 99%