Abstract:
:Plant nucleotide-binding domain, leucine-rich repeat receptor (NLR) proteins play important roles in recognition of pathogen-derived effectors. However, the mechanism by which plant NLRs activate immunity is still largely unknown. The paired Arabidopsis NLRs RRS1-R and RPS4, that confer recognition of bacterial effectors AvrRps4 and PopP2, are well studied, but how the RRS1/RPS4 complex activates early immediate downstream responses upon effector detection is still poorly understood. To study RRS1/RPS4 responses without the influence of cell surface receptor immune pathways, we generated an Arabidopsis line with inducible expression of the effector AvrRps4. Induction does not lead to hypersensitive cell death response (HR) but can induce electrolyte leakage, which often correlates with plant cell death. Activation of RRS1 and RPS4 without pathogens cannot activate mitogen-associated protein kinase cascades, but still activates up-regulation of defence genes, and therefore resistance against bacteria.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Ngou BPM,Ahn HK,Ding P,Redkar A,Brown H,Ma Y,Youles M,Tomlinson L,Jones JDGdoi
10.1093/jxb/erz571subject
Has Abstractpub_date
2020-03-25 00:00:00pages
2186-2197issue
6eissn
0022-0957issn
1460-2431pii
5734761journal_volume
71pub_type
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