- Information
- Symbol: TAC4,SG2,OsBC17
- MSU: LOC_Os02g25230
- RAPdb: Os02g0450000
- Publication
- TAC4 controls tiller angle by regulating the endogenous auxin content and distribution in rice , 2020, Plant Biotechnol J ..
- Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., 2022, J Integr Plant Biol.
- BRITTLE CULM17, a Novel Allele of TAC4, Affects the Mechanical Properties of Rice Plants., 2022, Int J Mol Sci.
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Genbank accession number
- Key message
- TAC4 can regulate rice shoot gravitropism by increasing the indole acetic acid content and affecting the auxin distribution
- TAC4 controls tiller angle by regulating the endogenous auxin content and distribution in rice
- The loss of TAC4 function leads to a significant increase in the tiller angle
- A sequence analysis revealed that TAC4 has undergone a bottleneck and become fixed in indica cultivars during domestication and improvement
- TAC4 encodes a plant-specific, highly conserved nuclear protein
- We further found that BRs enhance the accumulation of SG2 in the nucleus, and subcellular distribution of SG2 is regulated by GSK2 kinase activity
- The decreased grain size was caused by repressed cell expansion in spikelet hulls of the sg2 mutant
- In addition, OsOFP19, a negative regulator of grain shape, interacts with SG2 and plays an antagonistic role with SG2 in controlling gene expression and grain size
- Our results indicated that SG2 is a new component of GSK2-related BR signaling response and regulates grain size by interacting with OsOFP19
- SG2 is a positive regulator downstream of GSK2 in response to BR signaling, and its mutation causes insensitivity to exogenous BR treatment
- According to LC-MS/MS analysis of intermediate products of the lignin synthesis pathway, the accumulation of caffeyl alcohol in the osbc17 mutant was significantly higher than in Pingtangheinuo
- Caffeyl alcohol can be polymerized to the catechyl lignin monomer by laccase ChLAC8; however, ChLAC8 and OsBC17 are not homologous proteins, which suggests that the osbc17 gene is involved in this process by regulating laccase expression
- Connection
- GSK2~OsGSK2~OsSK22, TAC4~SG2~OsBC17, Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., SG2 is a positive regulator downstream of GSK2 in response to BR signaling, and its mutation causes insensitivity to exogenous BR treatment
- GSK2~OsGSK2~OsSK22, TAC4~SG2~OsBC17, Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., Genetical and biochemical analysis showed that GSK2 interacts with and phosphorylates SG2
- GSK2~OsGSK2~OsSK22, TAC4~SG2~OsBC17, Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., We further found that BRs enhance the accumulation of SG2 in the nucleus, and subcellular distribution of SG2 is regulated by GSK2 kinase activity
- OsOFP19, TAC4~SG2~OsBC17, Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., In addition, OsOFP19, a negative regulator of grain shape, interacts with SG2 and plays an antagonistic role with SG2 in controlling gene expression and grain size
- OsOFP19, TAC4~SG2~OsBC17, Ribonuclease H-like gene Small Grain2 regulates grain size in rice through brassinosteroids signal pathway., Our results indicated that SG2 is a new component of GSK2-related BR signaling response and regulates grain size by interacting with OsOFP19
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