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Poster

Session: Session 1 Presenting Authors at Posters (Odds)

P-095 - The TOPLESS co-repressor family and WRKY63 regulate different stages of transcriptional reprogramming after the cell surface immune receptor RLP23 activation

Monday, July 14, 2025
13:30 - 15:15  
Location: Confex Hall 3
Extracellular & Intracellular non-self recognition & signaling
Pathogen-associated molecular patterns (PAMPs) derived from the Necrosis-inducing-like proteins (NLPs) activate immunity in different plant species. In Arabidopsis, the PAMP nlp24 recognition by the RLP23 cell surface receptor activates signaling via the EDS1 and helper NLR family proteins. How the transcriptional responses are regulated after that is unclear. Using the bulk RNAseq analyses, we found that transcriptional co-repressor TOPLESS-Related 1 and the transcription factor WRKY63 regulate the early and late stages of the nlp24-triggered transcriptional reprogramming. The data indicate that another cell surface immune receptor signaling branch contributes to the PAMP nlp24-triggered immunity. We propose that the RLP23 downstream signaling outputs are balanced by other cell surface receptors.