What's happening at IRRI

Thursday Seminar

Thursday, November 24, 2016, 01:15pm - 02:15pm


Cracking the Genetic Code of Brown Planthopper Resistance Gene BPH18

Dr K.K. Jena
Principal Scientist
Plant Breeding Division

Brown planthopper (BPH), Nilaparvata Lugens Stål is a major insect pest that greatly reduces rice yield every year. The destruction of rice crops happens not only in the tropics, but also in temperate rice-growing countries in Asia. Host-plant resistance to the sap-sucking BPH is the strategy of choice to combat the damage to rice crops because it is environmentally friendly and economical for farmers. To date, 30 BPH resistance genes have been genetically identified. At IRRI, we have isolated the broad-spectrum resistance gene, BPH18, using map-based cloning to unravel the defense function of the gene against BPH attack. The resistance gene, BPH18, from the wild rice O. australiensis (EE genome), is located on chromosome 12. This BPH18 gene enables the rice plant to produce two proteins in its tissues, which prevent the insect from feeding. Thus, the introduction of the BPH18 gene into elite rice cultivars will help limit the damage of BPH attacks. Let us listen to the story of the discovery of this important resistance gene at IRRI and how it will lead to a more stable rice production.


Havener Auditorium, International Rice Research Institute, Los Baños, 4030 Laguna, Philippines