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Fig. 8 | BMC Plant Biology

Fig. 8

From: FtMYB8 from Tartary buckwheat inhibits both anthocyanin/Proanthocyanidin accumulation and marginal Trichome initiation

Fig. 8

Potential working model for the function of FtMYB8. FtMYB8 mRNA mainly accumulates in the roots during the true leaf stage and flowering stage and in bud trichomes and flowers, and the expression of this gene is enhanced by ABA, MeJA and UV-B signals and suppressed by dark treatment. FtMYB8 could interact with TT8/GL3, and this abnormal interaction may disrupt the normal formation of the MYBs-TT8/GL3-TTG1 complex. FtMYB8 may form MBW complex with TT8/GL3 and TTG1, and then, these MBW complexes may reduce the accumulation of anthocyanin/PA by downregulating TT12 expression. FtMYB8 may also inhibit the initiation of marginal trichomes by forming MBW complexes and/or decreasing the levels of active TT8/GL3 proteins

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