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TILLER ANGLE CONTROL 1 (TAC1) is involved in the regulation ...

created	[InstanceEdit:9924415]
dbId	9924487
displayName	TILLER ANGLE CONTROL 1 (TAC1) is involved in the regulation ...
literatureReference	[LiteratureReference:9924582] TAC1, a major quantitative trait locus controlling tiller angle in rice [LiteratureReference:9924393] A Novel Tiller Angle Gene, TAC3, together with TAC1 and D2 Largely Determine the Natural Variation of Tiller Angle in Rice Cultivars [LiteratureReference:9924361] LAZY1 Controls Tiller Angle and Shoot Gravitropism by Regulating the Expression of Auxin Transporters and Signaling Factors in Rice
schemaClass	Summation
text	TILLER ANGLE CONTROL 1 (TAC1) is involved in the regulation of the tiller angle. It promotes horizontal shoot growth. TAC1 and LAZY1 play opposite functions in the regulation of tiller growth angle. The overexpression of TAC1 results in an enlarged tiller angle, thus a spread-out plant architecture. The cultivated japonica rice genotypes contain a point mutation in the 3'-splice site of TAC1's fourth intron (?GGGA?) that suppresses TAC1 expression, causing a compact plant architecture (Zhu et al., 2021). In contrast, wild rice and several indica rice accessions (with spread-out tillers) contain ?AGGA? in the 3'-splice site of TAC1's fourth intron (Dong et al., 2016). Transgenic RNAi plants that show silencing of TAC1 exhibit erect tillers with a very small tiller angle (Baisheng et al., 2007). TAC1 promoter has binding sites for the three TFs including ARF15, OsHOX1, and OsHOX28 (Naithani et al. (2024);analysis conducted by the Plant Reactome Biocurator)

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