ArticleMolecular horticulture2024
An 'activator-repressor' loop controls the anthocyanin biosynthesis in red-skinned pear.
Article in Molecular horticulture, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Light-responsive PyNAC90 orchestrates anthocyanin biosynthesis through combinatorial transcriptional activation and COP1-mediated degradation in pear.Molecular horticulture · 2026Article
- Agrobacterium rhizogenes-mediated stable and transient transformation systems enable rapid functional validation of C6 aldehyde synthesis genes in peach.BMC plant biology · 2026Article
- A R2R3-MYB, VwMYB1, regulates anthocyanin biosynthesis in pansy petal blotch via transcriptional activation of VwF3'5'H.Plant cell reports · 2026Article
- Review
- A novel R2R3-MYB transcription factor PpMYB5 assisting Ppbbx24-del positively regulates anthocyanin biosynthesis in 'Red Zaosu' pear.Horticulture research · 2026Article
- Molecular insights into the regulation of flavonoid biosynthesis in fruits.Horticulture research · 2026Article
- The LoMYB26/LoJAZ4-LoCOMT module regulates anther dehiscence via Jasmonic acid-mediated endothecium lignification in lily.Journal of advanced research · 2026Article
- Article
- The Light-RegulatedInternational journal of molecular sciences · 2025Article
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Authors and funding
13 authors.
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Abstract
The color of red-skinned pear (Pyrus spp.) is primarily attributed to accumulation of anthocyanins, which provide nutritional benefits for human health and are closely associated with the commercial value of fruits. Here, we reported the functional characterization of a R2R3-MYB repressor PyMYB107, which forms an 'activator-repressor' loop to control anthocyanin accumulation in the red-skinned pear. PyMYB107 overexpression inhibited anthocyanin biosynthesis in both pear calli and fruits, while virus-induced gene silencing of PyMYB107 increased anthocyanin accumulation in pear fruits. Furthermore, ectopic expression of PyMYB107 decreased anthocyanin accumulation in tomato, strawberry and tobacco. PyMYB107 can competitively bind to PybHLH3 with PyMYB10/MYB114, thereby suppressing the transcriptional activation of key anthocyanin biosynthesis genes, PyANS and PyUFGT. Site-directed mutagenesis showed that mutations within the R3 domain and EAR motif of PyMYB107 eliminated its repressive activity. Additionally, PyMYB107 exhibited a comparable expression pattern to PyMYB10/MYB114 and was transcriptionally activated by them. Our finding advanced comprehension of the repression mechanism underlying anthocyanin accumulation, providing valuable molecular insights into improving quality of pear fruits.
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