A GLYCINE-RICH RNA-BINDING PROTEIN GENE IS DIFFERENTIALLY EXPRESSED DURING ACUTE HYPERSENSITIVE RESPONSE FOLLOWING TOBACCO MOSAIC-VIRUS INFECTION IN TOBACCO

During efforts for cloning disease resistance-responsive genes, a cDNA encoding a putative Nicotiana glutinosa glycine-rich RNA binding prot ein (ngRBP) was isolated from TMV induced cDNA library. Northern blot hybridization revealed that ngRBP gene is negatively regulated during early hours of TMV induced acute hypersensitive response (HR). Under g reenhouse conditions induced expression of ngRBP gene was observed aft er 24 h following TMV infection. Salicylic acid and copper also induce d ngRBP mRNA expression. Our findings are suggestive of some possible role for ngRBP in plant-pathogen interaction.