The RsFLC1 and RsSAM1 gene regulates the bolting time in Radish (Raphanus sativus L.).

RsFLC1 and RsSAM1 genes regulate bolting time in radish, with RsFLC1 acting as a negative regulator and RsSAM1 promoting early flowering.

• Why it matters: Understanding flowering regulation in radish is important because early bolting affects root development and commercial value, yet its molecular basis remains largely unknown.
• What they did: Researchers fine-mapped the qBT7.2 locus to identify RsFLC1 as a candidate gene, and used overexpression, gene silencing, and interaction assays in radish and Arabidopsis to explore their roles.
• The result: Silencing RsFLC1 and RsSAM1 accelerates bolting and flowering, while overexpression delays it, revealing their antagonistic roles and offering genetic resources for breeding late-bolting radish varieties.