Figure S1. Schematic representation of the flavonoid biosynthetic pathway in Arabidopsis thaliana.

Figure S2. Phenotypes of transgenic plants expressing mTCP3 and TCP3SRDX.

Figure S3. Promoter activity analysis of TCP3.

Figure S4. Abundance of the PIN1–GFP and PIN2–GFP fusion proteins in transgenic roots expressing mTCP3.

Figure S5. Transcriptome analysis revealed de-regulated genes in mTCP3 and TCP3SRDX plants.

Figure S6. Analysis of TCP3 interactions with GL1, TT8 and TTG1 using BiFC.

Figure S7. Phenotypes of tt4–11 mutants transformed with mTCP3 and TCP3SRDX.

Figure S8. Flavonol accumulation in tt4–11 mutants expressing mTCP3.


Table S1. Analysis of T1 transgenic populations expressing TCP3 or mTCP3.

Table S2. Analysis of T1 transgenic populations expressing TCP3SRDX or mTCP3SRDX.

Table S3. Oligonucleotide primers used in this study.


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