GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00000188
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Cucumis melo - monoecious
Trait State in Taxon B
Cucumis melo - gynoecious
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Latin Name
Common Name
muskmelon
Synonyms
muskmelon; Oriental melon; Cucumis melo L., 1753; Cucumis melo var. markuwa Markino; Cucurbita melo L.
Rank
species
Lineage
Show more ... na; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; fabids; Cucurbitales; Cucurbitaceae; Benincaseae; Cucumis
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
muskmelon
Synonyms
muskmelon; Oriental melon; Cucumis melo L., 1753; Cucumis melo var. markuwa Markino; Cucurbita melo L.
Rank
species
Lineage
Show more ... na; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; fabids; Cucurbitales; Cucurbitaceae; Benincaseae; Cucumis
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Generic Gene Name
WIP1
Synonyms
Arabidopsis thaliana WPP domain interacting protein 1; AtWIP1; WPP domain interacting protein 1; At4g26455; M3E9.120
Sequence Similarities
-
UniProtKB
Arabidopsis thaliana
GenebankID or UniProtKB
Presumptive Null
No
Molecular Type
Aberration Type
Insertion Size
1-10 kb
Molecular Details of the Mutation
Promoter insertion of a Transcription Factor Binding Site allowing propagation of heritable methylation
Experimental Evidence
Authors
Martin A; Troadec C; Boualem A; Rajab M; Fernandez R; Morin H; Pitrat M; Dogimont C; et al. ... show more
Abstract
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, CmACS-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 stamen 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.
Additional References
RELATED GEPHE
Related Genes
Related Haplotypes
No matches found.
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