Pearl millet grains could soon carry higher levels of natural antioxidants, thanks to a project that will edit the crop’s genes to boost both its drought tolerance and its nutritional value. The problem is that pearl millet—a staple cereal for millions of undernourished people in Asia and Africa—suffers severe yield losses when drought strikes late in the growing season. Scientists have identified a family of genes, called UDP glycosyltransferases (UGTs), that help plants regulate flavonoids—compounds linked to antioxidant activity and stress resistance. But how these genes work in pearl millet has remained unknown. The PearlFlavorS project will fill that gap by analysing natural genetic variation in UGTs across different pearl millet varieties, then using CRISPR gene editing to confirm which versions improve drought resilience and boost flavonoid content. If successful, the research could produce pearl millet varieties that yield more grain under drought conditions while providing higher levels of beneficial flavonoids. This would directly support food security and sustainable agriculture in regions where the crop is a dietary mainstay, without requiring additional water or fertiliser. The work is applied, not fundamental—it targets a specific genetic mechanism with a clear path to field-ready varieties.
View original technical description
Climate change, intensifying the effects of abiotic stresses, casts a shadow over global crop production. As the population is projected to approach 9 billion by 2050, the challenge lies in doubling food output. Among the 768 million undernourished individuals worldwide, Asia and Africa account for 418 million and 282 million, respectively, as per FAO 2020 statistics. In these regions, pearl millet stands as a crucial cereal grain, though its vulnerability to terminal drought stress leads to notable yield reductions. Despite recent revelations about UDP glycosyltransferases (UGTs) enhancing plant drought resistance and improving nutritional value via flavonoid biosynthesis regulation, their impact on pearl millet remains elusive. The PearlFlavorS project is poised to fill this void by targeting UGT genes, aiming to augment terminal drought tolerance and nutritional richness in pearl millet. Key UGTs associated with antioxidant levels in these grains have already been pinpointed in host laboratories. As a next step, the project will scrutinize UGT gene haplotypes across varied pearl millet germplasms, leveraging advanced CRISPR technology for functional validation. It is anticipated that heightened flavonoid concentrations will elevate yields and terminal drought resilience. With a multifaceted approach blending genomics, bioinformatics, and molecular biology, PearlFlavorS is committed to creating nutrient-rich pearl millet varieties resilient to terminal drought. Such initiatives promise not only amplified yields but also greater resistance to terminal drought and enhanced access to beneficial flavonoids. All these efforts align seamlessly with the UNSDGs, supporting sustainable agriculture, economic progression, and proactive steps towards climate change mitigation.
Plain English summaries and category classifications on this site are generated by AI and may not perfectly reflect the original research.
Is something wrong? Let us know