Scientists at Israel’s Ben Gurion University have isolated the gene in wild wheat that produces a poison to repel insects. Modern cultivated wheat has lost this trait, which Israeli scientists believe they can reintroduce to improve protection for the world’s vital wheat resources.
https://in.bgu.ac.il/en/pages/news/ZinWheat.aspx
https://www.frontiersin.org/articles/10.3389/fpls.2021.667820/full