The host resistance gene, Xa21, from Oryza longistaminata, is integrated into the genome of Oryza sativa for its broad-range resistance to rice leaf blight caused by X. o. pv.
The Xa21 resistance gene from Oryza longistaminata is being integrated into the genome of Oryza sativa to provide broad-spectrum protection against rice leaf blight caused by X. oryzivorus.