This figure illustrates the influence of LvBBX24 and LvbZIP44 on anthocyanin synthesis. (IMAGE)
Caption
This figure illustrates the influence of LvBBX24 and LvbZIP44 on anthocyanin synthesis. Acting as individual transcription factors, LvBBX24 and LvbZIP44 can modulate anthocyanin accumulation by binding to the LvMYB5 promoter. LvBBX24, a member of the typical BBX protein family, is upregulated in response to light. Exposure of lily petals to daylight increases LvBBX24 expression, thereby enhancing LvMYB5 transcription and promoting anthocyanin accumulation. Moreover, elevated LvBBX24 levels enable complex formation with LvbZIP44, binding to the primary G-box site to change the configuration of the promoter. Subsequently, LvBBX24 undergoes rapid degradation, while LvbZIP44 assumes a pivotal role in enhancing anthocyanin accumulation by binding to the LvMYB5 promoter. In summary, our study unveils novel functionalities of LvBBX24 and LvbZIP44 in anthocyanin synthesis, enriching our understanding of the regulatory network governing anthocyanin biosynthesis.
Credit
Horticulture Research
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CC BY