Changes in regulation of a transcription factor lead to autogamy in cultivated tomatoes.
We report the cloning of Style2.1, the major quantitative trait locus responsible for a key floral attribute (style length) associated with the evolution of self-pollination in cultivated tomatoes. The gene encodes a putative transcription factor that regulates cell elongation in developing styles. The transition from cross-pollination to self-pollination was accompanied, not by a change in the STYLE2.1 protein, but rather by a mutation in the Style2.1 promoter that results in a down-regulation of Style2.1 expression during flower development.
Chen
Kai-Yi
KY
Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853, USA.
Cong
Bin
B
Wing
Rod
R
Vrebalov
Julia
J
Tanksley
Steven D
SD
D000595:Amino Acid Sequence; D001483:Base Sequence; D005075:Biological Evolution; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D003433:Crosses, Genetic; D015536:Down-Regulation; D035264:Flowers / Q000033:anatomy & histology* / Q000235:genetics / Q000254:growth & development; D017343:Genes, Plant; D005838:Genotype; D018257:Helix-Loop-Helix Motifs; D018551:Solanum lycopersicum / Q000033:anatomy & histology / Q000235:genetics* / Q000502:physiology*; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D011058:Pollen / Q000502:physiology; D011401:Promoter Regions, Genetic; D040641:Quantitative Trait Loci; D012098:Reproduction; D017384:Sequence Deletion; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D014170:Transformation, Genetic
D010940:Plant Proteins; D014157:Transcription Factors