ArticleGenetics2006
Patterns of nucleotide diversity in wild and cultivated sunflower.
Article in Genetics, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 1 of them a synthesis that pooled it.
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Who cites it
83 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Perennials as Future Grain Crops: Opportunities and Challenges.Frontiers in plant science · 2022Pooled it
- Abundant genetic variation is retained in many laboratory schistosome populations.PLoS pathogens · 2025Article
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- Genome-wide association study provides new insight into the underlying mechanism of drought tolerance during seed germination stage in soybean.Scientific reports · 2024Article
- A Mid-Density Single-Nucleotide Polymorphism Panel for Molecular Applications in Cowpea (International journal of genomics · 2024Article
- Population-aware permutation-based significance thresholds for genome-wide association studies.Bioinformatics advances · 2024Article
- Population structure in diverse pepper (Capsicum spp.) accessions.BMC research notes · 2023Article
- Genomic-environmental associations in wild cranberry (Vaccinium macrocarpon Ait.).G3 (Bethesda, Md.) · 2022Article
- A comparative study of population genetic structure reveals patterns consistent with selection at functional microsatellites in common sunflower.Molecular genetics and genomics : MGG · 2022Article
- Genomic regions associate with major axes of variation driven by gas exchange and leaf construction traits in cultivated sunflower (Helianthus annuus L.).The Plant journal : for cell and molecular biology · 2022Article
- Association mapping for broomrape resistance in sunflower.Frontiers in plant science · 2022Article
- Genetic control of arbuscular mycorrhizal colonization by Rhizophagus intraradices in Helianthus annuus (L.).Mycorrhiza · 2021Article
- Toward the identification of molecular markers associated with phytochemical traits in the Iranian sumac (Food science & nutrition · 2021Article
- History of the progressive development of genetic marker systems for common buckwheat.Breeding science · 2020Article
- Article
- Demography and Natural Selection Have Shaped Genetic Variation in the Widely Distributed Conifer Norway Spruce (Picea abies).Genome biology and evolution · 2020Article
- Article
- Gene flow signature in the S-allele region of cultivated buckwheat.BMC plant biology · 2019Article
- Ancient DNA reveals the timing and persistence of organellar genetic bottlenecks over 3,000 years of sunflower domestication and improvement.Evolutionary applications · 2019Article
- Review
23 more citing papers are in PubMed but not listed here.
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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Interest in the level and organization of nucleotide diversity in domesticated plant lineages has recently been motivated by the potential for using association-based mapping techniques as a means for identifying the genes underlying complex traits. To date, however, such data have been available only for a relatively small number of well-characterized plant taxa. Here we provide the first detailed description of patterns of nucleotide polymorphism in wild and cultivated sunflower (Helianthus annuus), using sequence data from nine nuclear genes. The results of this study indicate that wild sunflower harbors at least as much nucleotide diversity as has been reported in other wild plant taxa, with randomly selected sequence pairs being expected to differ at 1 of every 70 bp. In contrast, cultivated sunflower has retained only 40-50% of the diversity present in the wild. Consistent with this dramatic reduction in polymorphism, a phylogenetic analysis of our data revealed that the cultivars form a monophyletic clade, adding to the growing body of evidence that sunflower is the product of a single domestication. Eight of the nine loci surveyed appeared to be evolving primarily under purifying selection, while the remaining locus may have been the subject of positive selection. Linkage disequilibrium (LD) decayed very rapidly in the self-incompatible wild sunflower, with the expected LD falling to negligible levels within 200 bp. The cultivars, on the other hand, exhibited somewhat higher levels of LD, with nonrandom associations persisting up to approximately 1100 bp. Taken together, these results suggest that association-based approaches will provide a high degree of resolution for the mapping of functional variation in sunflower.
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