bHLH2
Coloration (flowers; seeds)
Coding,
Insertion
N
Ipomoea tricolor
(species) D
Domesticated
Candidate Gene
Park KI; Choi JD; Hoshino A ; et al. (2004)
An intragenic tandem duplication in a transcriptional regulatory gene for anthocyanin biosynthesis c[...]
GP00002091
BHLH2
Q9CAD0
Morphology
intragenic tandem duplication of 3.3 kbp of the bHLH2 gene. Each of the tandem repeats is flanked by a 3-bp sequence AAT; indicating that the 3-bp microhomology is used to generate the tandem duplication. The transcripts in the pale-blue flower buds of the mutant contain an internal 583-bp tandem duplication that results in the production of a truncated polypeptide lacking the bHLH domain. The mRNA accumulation of most of the structural genes encoding enzymes for anthocyanin biosynthesis in the flower buds of the mutant was significantly reduced. The transcripts identical to the wild-type mRNAs for the transcriptional activator were present abundantly in blue spots of the variegated flowers whereas the transcripts containing the 583-bp tandem duplication were predominant in the pale-blue background of the same flowers. The flower and seed variegations studied here are likely to be caused by somatic homologous recombination between an intragenic tandem duplication in the gene encoding a bHLH transcriptional activator for anthocyanin biosynthesis. N
Ipomoea tricolor
(species)
Ipomoea tricolor
(species) D
bHLH2
Ipomoea tricolor
(species)
Published - Accepted by Curator
flavonoid 3'-hydroxylase (F3'H)
Coloration (flowers)
Coding,
Insertion
N
Ipomoea tricolor
(species) D
Domesticated
Candidate Gene
Hoshino A; Morita Y; Choi JD ; et al. (2003)
Spontaneous mutations of the flavonoid 3'-hydroxylase gene conferring reddish flowers in the three m[...]
GP00002088
CYP75B1
Q9SD85
Morphology
a single T insertion generating the stop codon TAG. The accumulation of the F3'H transcripts is drastically reduced by the nonsense-mediated RNA decay. N
Ipomoea tricolor
(species)
Ipomoea tricolor
(species) D
flavonoid 3'-hydroxylase (F3'H)
Ipomoea tricolor
(species)
Published - Accepted by Curator