A transposon-induced epigenetic change leads to sex determination in melon
| Autor: | Halima Morin, Adnane Boualem, Christelle Troadec, Ronan Fernandez, Abdelhafid Bendahmane, Antoine Martin, Mazen Rajab, Michel Pitrat, Catherine Dogimont |
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| Přispěvatelé: | Unité de recherche en génomique végétale (URGV), Institut National de la Recherche Agronomique (INRA)-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Génétique et Amélioration des Fruits et Légumes (GAFL), Institut National de la Recherche Agronomique (INRA), Centre National de la Recherche Scientifique (CNRS)-Université d'Évry-Val-d'Essonne (UEVE)-Institut National de la Recherche Agronomique (INRA), Unité de recherche Génétique et amélioration des fruits et légumes (GALF) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Transposable element GYNOECIOUS Molecular Sequence Data Stamen Lyases Flowers [SDV.BC]Life Sciences [q-bio]/Cellular Biology Biology Genes Plant Polymorphism Single Nucleotide 01 natural sciences Epigenesis Genetic DIOECY 03 medical and health sciences Hermaphrodite MALE FLOWER HERMAPHRODITE FLOWER Epigenetics Allele Promoter Regions Genetic Gene Alleles 030304 developmental biology MONOECY Genetics SEX DETERMINATION 0303 health sciences Multidisciplinary fungi food and beverages DNA Methylation Ethylenes Sex Determination Processes Meristem GENETIQUE Cucurbitaceae FEMALE FLOWER DNA methylation DNA Transposable Elements Transcription Factors 010606 plant biology & botany |
| Zdroj: | Nature Nature, 2009, 461, pp.1135-1139. ⟨10.1038/nature08498⟩ Nature, Nature Publishing Group, 2009, 461, pp.1135-1139. ⟨10.1038/nature08498⟩ |
| ISSN: | 0028-0836 1476-4687 1476-4679 |
| DOI: | 10.1038/nature08498⟩ |
| Popis: | Supplementary Informations : 15 p. ; Sex determination in plants leads to the development of unisexual flowers from an originally bisexual floral meristem. This mechanism results in the enhancement of outcrossing and promotes genetic variability, the consequences of which are advantageous to the evolution of a species. In melon, sexual forms are controlled by identity of the alleles at the andromonoecious (a) and gynoecious (g) loci. We previously showed that the a gene encodes an ethylene biosynthesis enzyme, mACS-7, that represses stamen development in female flowers. Here we show that the transition from male to female flowers in gynoecious lines results from epigenetic changes in the promoter of a transcription factor, CmWIP1. This natural and heritable epigenetic change resulted from the insertion of a transposon, which is required for initiation and maintenance of the spreading of DNA methylation to the CmWIP1 promoter. Expression of CmWIP1 leads to carpel abortion, resulting in the development of unisexual male flowers. Moreover, we show that CmWIP1 indirectly represses the expression of the andromonoecious gene, CmACS-7, to allow tamen development. Together our data indicate a model in which CmACS-7 and CmWIP1 interact to control the development of male, female and hermaphrodite flowers in melon. |
| Databáze: | OpenAIRE |
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