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expand all sections collapse all sections  Zea mays subsp. mays Gene "a1"
ID 782
Name a1 (GENE SYMBOL)
Synonyms (6)
GRAMENE GENEGR:0200001
Type Gene
Species Zea mays subsp. mays (Maize) [ GR_tax:014546 ]
Germplasm
Description Colorless aleurone, green or brown plant; brown pericarp with P1-rr. With
appropriate complementary factors, dominant allele (A1) causes anthocyanin
pigments to form in the aleurone, plant and pericarp tissues; recessive or
intermediate alleles cause absence or reduction of pigment or substitution of
brown pigment in these tissues. Some alleles are compound (alpha and beta,
Laughnan 1955) and some alleles (a1-b, alpha) confer dominant brown pericarp.
Reference allele (a1) is a Dt1 transposon receptor (Rhoades 1938; Nuffer 1961)
as a consequence of the presence of the rDt (Sorrentino et al. 1987 MNL
61:103). Deficiency a1-x1 etc. (Stadler and Roman 1948). Molecular clone
(O'Reilly et al. 1985). A1 encodes dihydroquercetin reductase (Reddy et al.
1987). bnl(a1) (pAmu2), npi51(a1)(), npi467(a1)(). P1 activates transcription
directly; cold increases transcript accumulation 7-fold (Christie 1994).
Promoter P1-binding site, CCTACCAACC, may be two overlapping hexameric binding
sites, CCTACC and CCAACC (Grotewold et al 1994 Cell 76:543-553). This gene was
originally curated in MaizeGDB Database and the map position was displayed on
the maize bins map if feasible.
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