GEPHE SUMMARY
Gephebase Gene
c1
Entry Status
Published
GepheID
GP00000167
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Zea mays ssp. Mays - white seeds - allele c1-p
Trait State in Taxon B
Zea mays ssp. Mays - colored seeds - allele C1
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
NCBI Taxonomy ID
is Taxon A an Infraspecies?
Yes
Taxon A Description
Zea mays ssp. Mays - white seeds - allele c1-p
Taxon B
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
Show more ... phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
NCBI Taxonomy ID
is Taxon B an Infraspecies?
Yes
Taxon B Description
Zea mays ssp. Mays - colored seeds - allele C1
GENOTYPIC CHANGE
Generic Gene Name
C1
Synonyms
c1; C1-I; MYB1; Myb37; C1-B73; c1-I-2K1; GRMZM2G005066; Z438D03.27
String
-
Sequence Similarities
-
GO - Cellular Component
UniProtKB
Zea mays
GenebankID or UniProtKB
Presumptive Null
No
Molecular Type
Aberration Type
Insertion Size
1-9 bp
Molecular Details of the Mutation
5bp insertion in the proximal promoter that creates a new binding site for VP1; a transcription factor that regulates kernel maturation; so that the pigment pathway is turned on while the kernel matures; giving blue kernels
Experimental Evidence
Authors
Hattori T; Vasil V; Rosenkrans L; Hannah LC; McCarty DR; Vasil IK
Abstract
The Viviparous-1 (Vp1) gene is required for expression of the C1 regulatory gene of the anthocyanin pathway in the developing maize seed. We show that VP1 overexpression and the hormone, abscisic acid (ABA), activate a reporter gene driven by the C1 promoter in maize protoplasts. Cis-acting sequences essential for these responses were localized. Mutation of a conserved sequence in the C1 promoter abolishes both ABA regulation and VP1 trans-activation. An adjacent 5-bp deletion blocks ABA regulation but not VP1 trans-activation. The latter mutant reconstructs the promoter of c1-p, an allele that is expressed during seed germination but not during seed maturation. We suggest that VP1 activates C1 specifically during maturation by interacting with one or more ABA-regulated transcription factors.
RELATED GEPHE
Related Haplotypes
No matches found.
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