Experts from Henan Agricultural University in China have identified a key wheat gene that helps regulate iron uptake and storage. The study focuses on the transcription factor TaPIL1, which plays a central role in activating iron-related responses in wheat plants. Their study is a breakthrough that could support efforts to breed more nutritious wheat varieties and address iron deficiency anemia.
The researchers found that the expression level of TaPIL1 increases when the plant is exposed to iron deficiency treatment. In their study, the findings showed that the TaPIL1-5D overexpressed (OE) plant lines accumulated more iron content in the root, shoot, and white flour from the grain compared with the wild-type (WT) plants. They also found that Fe storage-related genes, such as NRAMP3 and Fer1, had higher expression levels in OE lines than in WT.
The study revealed that the seedlings and grains of wheat varieties carrying the elite of TaPIL1-5B showed higher expression of the TaNRAMP3 and TaFer1 genes and increased iron content compared with non-elite haplotype wheat varieties. Overall, the findings indicate that the TaPIL1–TaNRAMP3/TaFer1 module plays a key role in iron accumulation in wheat and could be used in future wheat breeding programs to enhance iron content.
For more information, read the study from SSRN.
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