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Fungal oxalic acid inhibits the deamidation of CERK1 ectodomain to dampen chitin-triggered plant immunity.

Science China. Life sciences - 1 Dec 2025

Gong Ben-Qiang, Liu Jun-Jie, Xu Juan, Cheng Jiasen, Li Jian-Feng

Abstract excerpt

Botrytis cinerea and Sclerotinia sclerotiorum, two closely related necrotrophic fungal pathogens, secrete large amounts of oxalic acid (OA) into the plant apoplast to suppress host immunity, though the underlying mechanisms remain unclear. Here, we demonstrate that OA-induced virulence in Arabidopsis thaliana depends on CERK1, a coreceptor critical for fungal chitin-triggered immunity. Mass spectrometry analysis...

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PMID: 41182666
DOI: 10.1007/s11427-025-3092-7

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