Identification of Candidate Genes for Bacterial Leaf Blight Resistance in Rice by Integration of Genetic QTL Map with the Physical Map

To identify putative candidate genes involved in BLB disease resistance, we performed in silico anchoring of the generated QTL genetic marker data to the rice physical map. In total, one QTL responsible for resistance specificity to Xanthomonas oryzae pv. oryzae iso 6 was identified using CT 9993-5-10-1-M / IR 62266-42-6-2 double haploid population. The QTL qBB 10.1, on chromosome 10 RG 4561-EM 14-10 was saturated with 108 markers, 1097 ESTs, and 201 genes. In total, 28 putative positional candidate genes were identified and were classified based on their function. it is suggested that, the generated data can further be used for the dissection and validation of the QTL to understand the molecular mechanisms of the plant pathogen interaction and to develop a resistant variety.