National Academy of Sciences, Proceedings of the National Academy of Sciences, 35(118), 2021
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SignificanceTo date, the potential of utilizing root traits in plant breeding remains largely untapped. In this study, we cloned and characterized theENHANCED GRAVITROPISM2(EGT2) gene of barley that encodes a STERILE ALPHA MOTIF domain–containing protein. We demonstrated thatEGT2is a key gene of root growth angle regulation in response to gravity, which is conserved in barley and wheat and could be a promising target for crop improvement in cereals.