Multi-omics integration reveals the physiological regulation and resistance mechanisms of different oat varieties under low phosphorus conditions.

High-PUE oat cultivars KN and TY1 show enhanced adaptive responses, including increased root growth and metabolic reprogramming, under low phosphorus conditions.

• Why it matters: Understanding the molecular mechanisms behind phosphorus-use efficiency is crucial for developing crops that can thrive in phosphorus-deficient soils, addressing global food security and sustainable agriculture challenges.
• What they did: The study integrated transcriptomic, proteomic, and metabolomic analyses of four oat cultivars under normal and low phosphorus conditions, focusing on key pathways like purine metabolism and APRT regulation.
• The result: Findings reveal that APRT-centered purine salvage is vital for low-P adaptation, with overexpression in Arabidopsis improving growth under phosphorus deficiency, offering a target for crop improvement.