Tracing nutrient and cadmium accumulation in wheat from vegetative growth to grain filling: source dependencies and grain transcriptional programs.

Wheat grain accumulation of Fe, Mn, Cu, Zn, and Cd follows a slow-fast-slow pattern with rapid uptake around the jointing stage, and source dependencies vary among elements.

• Why it matters: Understanding mineral and cadmium accumulation in wheat is crucial for enhancing nutritional quality and food safety, addressing gaps in knowledge about their source contributions during development.
• What they did: Researchers combined developmental ionomics and temporal grain transcriptomics to analyze mineral accumulation and gene expression across wheat growth stages, focusing on source dependencies and accumulation patterns.
• The result: Findings reveal distinct accumulation phases and source reliance for each element, with stage-specific gene programs linked to these dynamics, offering a framework to improve grain nutrition and reduce Cd content.