Rice BiP3 regulates immunity mediated by the PRRs XA3 and XA21 but not immunity mediated by the NB-LRR protein, Pi5.
Plant innate immunity is mediated by pattern recognition receptors (PRRs) and intracellular NB-LRR (nucleotide-binding domain and leucine-rich repeat) proteins. Overexpression of the endoplasmic reticulum (ER) chaperone, luminal-binding protein 3 (BiP3) compromises resistance to Xanthomonas oryzae pv. oryzae (Xoo) mediated by the rice PRR XA21 [12]. Here we show that BiP3 overexpression also compromises resistance mediated by rice XA3, a PRR that provides broad-spectrum resistance to Xoo. In contrast, BiP3 overexpression has no effect on resistance mediated by rice Pi5, an NB-LRR protein that confers resistance to the fungal pathogen Magnaporthe oryzae (M. oryzae). Our results suggest that rice BiP3 regulates membrane-resident PRR-mediated immunity.
Department of Plant Pathology and the Genome Center, University of California Davis, Davis, CA 95616, USA; Department of Bioresources Engineering, Sejong University, Seoul 143-747, Republic of Korea.
Chang-Jin
CJ
Park
Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin 446-701, Republic of Korea.
Min-Young
MY
Song
Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin 446-701, Republic of Korea.
Chi-Yeol
CY
Kim
Graduate School of Biotechnology & Crop Biotech Institute, Kyung Hee University, Yongin 446-701, Republic of Korea.
Jong-Seong
JS
Jeon
Department of Plant Pathology and the Genome Center, University of California Davis, Davis, CA 95616, USA. Electronic address: pcronald@ucdavis.edu.
Pamela C
PC
Ronald
D004721:Endoplasmic Reticulum / Q000502:physiology; D018832:Molecular Chaperones / Q000235:genetics / Q000502:physiology*; D012275:Oryza / Q000235:genetics / Q000276:immunology; D010935:Plant Diseases / Q000235:genetics / Q000276:immunology*; D010940:Plant Proteins / Q000235:genetics / Q000276:immunology / Q000502:physiology*; D020794:Receptor Protein-Tyrosine Kinases / Q000235:genetics / Q000502:physiology*; D051192:Receptors, Pattern Recognition / Q000235:genetics / Q000502:physiology*; D014974:Xanthomonas / Q000472:pathogenicity
D018832:Molecular Chaperones; D010940:Plant Proteins; D051192:Receptors, Pattern Recognition; D020794:Receptor Protein-Tyrosine Kinases; C486360:Xa26 protein, Oryza sativa
BiP; Magnaporthe oryzae; NB-LRR; Oryzae sative; PRR; Xanthomonas oryzae pv. oryzae (Xoo)