DgMYB4 orchestrates anthocyanin modification and acyl-glucose donor biosynthesis in Delphinium grandiflorum.

DgMYB4 regulates anthocyanin biosynthesis and modification, with its expression linked to seasonal flower color variation in Delphinium grandiflorum.

• Why it matters: Understanding how flower coloration varies seasonally can reveal key regulatory mechanisms and aid in horticultural and breeding efforts for ornamental plants.
• What they did: Researchers performed transcriptome analysis, heterologous expression in Nicotiana tabacum, and molecular interaction assays, identifying DgMYB4 as a significantly upregulated regulator in summer flowers.
• The result: DgMYB4 promotes anthocyanin accumulation and activates key biosynthetic genes, enabling targeted manipulation of flower color and linking environmental conditions to pigment regulation.