Putative pathway or networks related to programmed cell death or the hypersensitive response in rice mediated by the
candidate gene LOC_Os11g37759. Out of all the DEGs in the rice introgression line H471 compared with recurrent parent Huang-Hua-Zhan (HHZ) after PXO349 inoculation, genes co-expressing with LOC_Os11g37759 (the Xa39 candidate gene) were subjected to a co-expression analysis under biotic stress using the Pearson correlation coefficient (PCC) cutoff 0.70 in the Rice Oligonucleotide Array Database (ROAD) . Co-expression networks were constructed based on the pairwise PCC of genes with a cutoff of 0.70 in ROAD. Four sub-groups, indicated with letters from A to D, were identified as their putative functions. The thickness of the edges is proportional to the pairwise PCCs, and the full and dotted edges indicate positive and negative PCCs, respectively, between the two genes in ROAD. Different shapes with different colors indicate different groups of genes based on the functional annotation. The full and open shapes indicate the genes were up-regulated and down-regulated, respectively, in H471 compared with in HHZ after PXO349 inoculation.