How a Medicinal Plant Uses Genes to Turn Sunlight into Colourful Compounds

The traditional herb Perilla frutescens, valued in both kitchens and medicine cabinets, is rich in bioactive compounds like flavonoids and colourful anthocyanins. But how does it regulate their production? Researchers have now pinpointed a family of 31 key regulatory genes, known as PfBBXs, that appear to orchestrate this process.

In a recent study, a systematic analysis revealed that these genes contain elements highly responsive to light. When the team exposed the plants to different light intensities, they found it directly affected the accumulation of these valuable pigments. By integrating genetic and chemical analyses, they identified three specific genes—PfBBX10, PfBBX12, and PfBBX17—whose activity was significantly and positively correlated with the amount of anthocyanins and flavonoids produced.

This suggests these genes play a pivotal role in translating light signals into metabolic action, laying the groundwork for understanding how plants manage their complex chemical factories.