Enhancing plant broad-spectrum resistance through engineered pattern recognition receptors
Yang, Y.; Steidele, C. E.; Loeffelhardt, B.; Huang, L.; Jones, J. D.; Nuernberger, T.; Ding, P.; Gust, A. A.
Show abstract
Conventional plant resistance breeding has primarily focused on intracellular immune receptors, while cell-surface pattern recognition receptors (PRRs) have been underexplored due to their comparatively modest contributions to resistance. However, PRRs offer significant untapped potential for crop improvement. In this study, we demonstrate that the Arabidopsis receptor-like protein RLP23, which recognizes molecular patterns from three distinct microbial kingdoms, confers broad-spectrum resistance when introduced into the Solanaceae crop tomato. We also identify the intracellular (IC) domain of RLP23 as crucial for ensuring compatibility and efficacy during heterologous expression. Targeted engineering of the IC domain significantly enhances RLP23 potential utility, enabling transfer of robust resistance against bacterial, fungal, and oomycete pathogens to other plants without compromising yield. We extended this RLP engineering strategy to rice and poplar, highlighting its broad applicability. These findings establish a versatile framework for PRR-based engineering, opening new avenues for sustainable crop protection.
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