S-nitrosylation of a receptor-like cytoplasmic kinase regulates plant immunity

Beimi Cui, Qiaona Pan, Wenqiang Cui, Yiqin Wang, Verity I. P. Loake, Shuguang Yuan, Fengquan Liu*, Gary J. Loake*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Perception of pathogen/microbial-associated molecular patterns (P/MAMPs) by plant cell surface receptors leads to a sustained burst of reactive oxygen species (ROS), a key feature of P/MAMP-triggered immunity (PTI). Here we report that P/MAMP recognition leads to a rapid nitrosative burst, initiating the accumulation of nitric oxide (NO), subsequently leading to S-nitrosylation of the receptor-like cytoplasmic kinase (RLCK), botrytis-induced kinase 1 (BIK1), at Cys80. This redox- based, post-translational modification, promotes the phosphorylation of BIK1, subsequently resulting in BIK1 activation and stabilization. Further, BIK1 S-nitrosylation increases its physical interaction with RBOHD, the source of the apoplastic oxidative burst, promoting ROS formation. Our data identify mechanistic links between rapid NO accumulation and the expression of PTI, providing insights into plant immunity.
Original languageEnglish
Article numbereadk3126
Number of pages10
JournalScience Advances
Volume10
Issue number11
DOIs
Publication statusPublished - 15 Mar 2024

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