In silico modeling and interactive profiling of BPH resistant R genes with elicitor molecules of rice planthoppers
Premachandran, K.; Srinivasan, T. S.
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Brown planthopper resistant NBS-LRR specific R genes (Bph9, Bph14, Bph18, Bph26) have been reported in rice. BPH specific R genes were clustered with other R genes of rice on chromosome 12 (Bph9, Bph18, Bph26) and 3 (Bph14). Motif analysis of BPH specific R genes showed the predominant motifs as CC, NBS and LRR regions. Bph9, Bph18 and Bph26 R genes exhibited high degree of sequence similarity in their CC and NBS region and are considered as functional alleles of BPH resistance at chromosome 12. LRR region of BPH genes were interacting with the elicitor molecules of planthoppers and are the potential lignad binding site. Bph14 exhibited more number of LRR repeats and were interacting efficiently with all the tested salivary elictor molecules of planthoppers. Bph18 with no LRR region exhibited reduced interaction efficiency with the tested elicitor molecules of planthoppers. Our in silico studies confirms that Bph14 R gene resistance protein to be a promising candidate for providing broad spectrum resistance against planthoppers of rice. The study further provides new avenues to investigate the mechanism of receptor-ligand recognition and signaling mechanism against rice planthoppers.
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