RT Journal Article
SR Electronic
T1 Rice BiP3 regulates immunity mediated by the PRRs XA3 and XA21 but not immunity mediated by the NB-LRR protein, Pi5
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 003533
DO 10.1101/003533
A1 Chang-Jin Park
A1 Min-Young Song
A1 Chi-Yeol Kim
A1 Jong-Seong Jeon
A1 Pamela C. Ronald
YR 2014
UL http://biorxiv.org/content/early/2014/03/26/003533.abstract
AB 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 (Park et al., PLoS ONE 5(2): e9262). 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.