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expand all sections collapse all sections  Oryza sativa Gene "TAC1"
ID 86372
Name TAC1 (GENE SYMBOL)
Synonyms (1) Tiller Angle Control 1
GRAMENE GENEGR:0080038
Type Gene
Species Oryza sativa (Oryza sativa) [ GR_tax:013681 ]
Germplasm
Description TAC1 (Tiller Angle Control 1) was mapped to a 35-kb region on chromosome 9 using
a large F2 population from crosses between an indica rice, IR24 (spread-out
plant architecture) and an japonica introgressed line, IL55 (compact plant
architecture with erect tillers). TAC1 gene harbors three introns in its coding
region and a fourth 1.5-kb intron in the 3-untranslated region. A mutation in
the 3'-splicing site of the 1.5-kb intron from "AGGA" to "GGGA" decreases the
level of tac1, resulting in a compact plant architecture with a tiller angle
close to zero. tac1 mutation "GGGA" was present in 88 compact japonica rice
accessions and TAC1 with "AGGA" was present in 21 wild rice accession and 43
indica rice accessions with the spread-out form. Change in the tiller angle is
driven by growth orientation of the tiller base.
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