GEPHE SUMMARY
Gephebase Gene
Entry Status
Published
GepheID
GP00000346
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Helianthus annuus
Trait State in Taxon B
Helianthus annuus
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Common Name
common sunflower
Synonyms
common sunflower; Helianthus annuus L.; Helianthus annua; Helianthus annus; Helianthus annuus8
Rank
species
Lineage
Show more ... phyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; asterids; campanulids; Asterales; Asteraceae; Asteroideae; Heliantheae alliance; Heliantheae; Helianthus
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
common sunflower
Synonyms
common sunflower; Helianthus annuus L.; Helianthus annua; Helianthus annus; Helianthus annuus8
Rank
species
Lineage
Show more ... phyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; asterids; campanulids; Asterales; Asteraceae; Asteroideae; Heliantheae alliance; Heliantheae; Helianthus
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
UniProtKB
Arabidopsis thaliana
GenebankID or UniProtKB
Presumptive Null
Yes
Molecular Type
Aberration Type
Deletion Size
1-9 bp
Molecular Details of the Mutation
1bp deletion; frameshift
Experimental Evidence
Authors
Blackman BK; Strasburg JL; Raduski AR; Michaels SD; Rieseberg LH
Abstract
Gene duplication provides an important source of genetic raw material for phenotypic diversification, but few studies have detailed the mechanisms through which duplications produce evolutionary novelty within species. Here, we investigate how a set of recently duplicated homologs of the floral inducer FLOWERING LOCUS T (FT) has contributed to sunflower domestication. We find that changes in expression of these duplicates are associated with differences in flowering behavior between wild and domesticated sunflower. In addition, we present genetic and functional evidence demonstrating that a frameshift mutation in one paralog, Helianthus annuus FT 1 (HaFT1), underlies a major QTL for flowering time and experienced a selective sweep during early domestication. Notably, this dominant-negative allele delays flowering through interference with action of another paralog, HaFT4. Together, these data reveal that changes affecting the expression, sequence, and gene interactions of HaFT paralogs have played key roles during sunflower domestication. Our findings also illustrate the important role that evolving interactions between new gene family members may play in fostering phenotypic change.
Additional References
RELATED GEPHE
Related Genes
No matches found.
Related Haplotypes
No matches found.
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