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Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

eLife, 2020-09, Vol.9 [Peer Reviewed Journal]

2020, Stahl et al. ;COPYRIGHT 2020 eLife Science Publications, Ltd. ;2020, Stahl et al 2020 Stahl et al ;ISSN: 2050-084X ;EISSN: 2050-084X ;DOI: 10.7554/eLife.60293 ;PMID: 32985977

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Title:
Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis
Author: Stahl, Elia ; Brillatz, Théo ; Ferreira Queiroz, Emerson ; Marcourt, Laurence ; Schmiesing, André ; Hilfiker, Olivier ; Riezman, Isabelle ; Riezman, Howard ; Wolfender, Jean-Luc ; Reymond, Philippe
Subjects: Animals ; Arabidopsis - drug effects ; Arabidopsis - immunology ; Arabidopsis thaliana ; Butterflies - metabolism ; Cell death ; Gene expression ; Immune response ; innate immunity ; insect eggs ; Larva - chemistry ; Mass spectrometry ; Nuclear magnetic resonance spectroscopy ; Ovum - chemistry ; phosphatidylcholines ; Phosphatidylcholines - immunology ; Phosphatidylcholines - metabolism ; Phosphatidylcholines - pharmacology ; Pieris brassicae ; Plant Biology ; plant defense ; Plants (Organisms)
Is Part Of: eLife, 2020-09, Vol.9
Description: Recognition of conserved microbial molecules activates immune responses in plants, a process termed pattern-triggered immunity (PTI). Similarly, insect eggs trigger defenses that impede egg development or attract predators, but information on the nature of egg-associated elicitors is scarce. We performed an unbiased bioactivity-guided fractionation of eggs of the butterfly . Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry of active fractions led to the identification of phosphatidylcholines (PCs). PCs are released from insect eggs, and they induce salicylic acid and H O accumulation, defense gene expression and cell death in , all of which constitute a hallmark of PTI. Active PCs contain primarily C16 to C18-fatty acyl chains with various levels of desaturation, suggesting a relatively broad ligand specificity of cell-surface receptor(s). The finding of PCs as egg-associated molecular patterns (EAMPs) illustrates the acute ability of plants to detect conserved immunogenic patterns from their enemies, even from seemingly passive structures such as eggs.
Publisher: England: eLife Science Publications, Ltd
Language: English
Identifier: ISSN: 2050-084X
EISSN: 2050-084X
DOI: 10.7554/eLife.60293
PMID: 32985977
Source: PubMed Central (Open access)
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Phosphatidylcholines from Pieris brassicae eggs activate an immune response in Arabidopsis

2020, Stahl et al. ;COPYRIGHT 2020 eLife Science Publications, Ltd. ;2020, Stahl et al 2020 Stahl et al ;ISSN: 2050-084X ;EISSN: 2050-084X ;DOI: 10.7554/eLife.60293 ;PMID: 32985977

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