Scientists Identify Gene to Improve Root Systems in Cereal Crops

A collaborative research from University of Queensland PhD candidate Richard Dixon and scientists at the Australian National University revealed a plant signaling gene that could help develop cereal crops with deeper and more efficient root systems. The findings were published in the Journal of Experimental Botany.

“Our goal is to use biotechnology to create a ‘steep, deep and cheap' plant with a root system that can access water and nutrients in challenging conditions, without significant yield trade-offs,” Mr Dixon said. In the study, the team engineered Arabidopsis plants by introducing versions of the gene from barley, rice, and maize. He added that tailoring root system architecture to specific cropping conditions could improve resource capture efficiency, potentially lowering fertilizer costs, reducing environmental run-off, and enhancing crop performance under water-limited conditions.

While the initial findings are promising, the study also highlighted key challenges. In barley, knocking out CEPR1 improved root structure but resulted in yield penalties. The researchers now aim to refine the approach to develop root systems that can access deeper water and nutrients without compromising grain production. They are also exploring the combination of CEPR1 with other gene targets and the use of advanced root-scanning facilities in Germany to evaluate plant performance under drought and nutrient-stress conditions.

For more information, read the article from The University of Queensland.