Journal
MOLECULAR PLANT-MICROBE INTERACTIONS
Volume 35, Issue 12, Pages 1081-1095Publisher
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/MPMI-07-22-0153-R
Keywords
defense response; Oryza sativa; Rhizoctonia solani; rice; sheath blight; transcriptome
Funding
- Bose Institute Intramural fund
- Council of Scientific and Industrial Research (CSIR, India) [38(1432)/17/EMR-II]
- Bose Institute
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This study reveals the apoplastic defense response of rice against sheath blight infection caused by Rhizoctonia solani, and identifies a set of differentially expressed genes involved in resistance to sheath blight. It also identifies two secreted protease inhibitors from rice that induce disease resistance when expressed in Nicotiana benthamiana.
Sheath blight of rice caused by necrotrophic plant pathogen Rhizoctonia solani is one of the most common fungal diseases of rice leading to significant yield loss. Among the defense responses exhibited by the host plants towards fungal infections, those functional within the apoplast contribute significantly. Here, we have studied apoplastic defense response of rice towards R. solani during sheath blight infection. The transcriptome of R. solani-infected rice plants was compared with that of uninfected rice, to identify the set of defense genes that undergo differential expression and code for proteins with a predicted N-terminal signal peptide. Significant changes in the stress-responsive, molecular signal perception, protein modification, and metabolic process pathways represented by a group of differentially expressed genes were observed. Our data also revealed two secreted protease inhibitors from rice that exhibit increased expression during R. solani infection and induce disease resistance when expressed in Nicotiana benthamiana.
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