The MIK2/SCOOP Signaling System Contributes to Arabidopsis Resistance Against Herbivory by Modulating Jasmonate and Indole Glucosinolate Biosynthesis - Archive ouverte HAL Access content directly
Journal Articles Frontiers in Plant Science Year : 2022

The MIK2/SCOOP Signaling System Contributes to Arabidopsis Resistance Against Herbivory by Modulating Jasmonate and Indole Glucosinolate Biosynthesis

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Elia Stahl
  • Function : Author
Angel Fernandez Martin
  • Function : Author
Gaétan Glauser
  • Function : Author
Marie-Charlotte Guillou
Sébastien Aubourg
Jean-Pierre Renou
  • Function : Author
  • PersonId : 1144180
Philippe Reymond
  • Function : Author

Abstract

Initiation of plant immune signaling requires recognition of conserved molecular patterns from microbes and herbivores by plasma membrane-localized pattern recognition receptors. Additionally, plants produce and secrete numerous small peptide hormones, termed phytocytokines, which act as secondary danger signals to modulate immunity. In Arabidopsis, the Brassicae -specific SERINE RICH ENDOGENOUS PEPTIDE (SCOOP) family consists of 14 members that are perceived by the leucine-rich repeat receptor kinase MALE DISCOVERER 1-INTERACTING RECEPTOR LIKE KINASE 2 (MIK2). Recognition of SCOOP peptides elicits generic early signaling responses but knowledge on how and if SCOOPs modulate specific downstream immune defenses is limited. We report here that depletion of MIK2 or the single PROSCOOP12 precursor results in decreased Arabidopsis resistance against the generalist herbivore Spodoptera littoralis but not the specialist Pieris brassicae. Increased performance of S. littoralis on mik2-1 and proscoop12 is accompanied by a diminished accumulation of jasmonic acid, jasmonate-isoleucine and indolic glucosinolates. Additionally, we show transcriptional activation of the PROSCOOP gene family in response to insect herbivory. Our data therefore indicate that perception of endogenous SCOOP peptides by MIK2 modulates the jasmonate pathway and thereby contributes to enhanced defense against a generalist herbivore.
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hal-03701614 , version 1 (22-06-2022)

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Attribution - CC BY 4.0

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Elia Stahl, Angel Fernandez Martin, Gaétan Glauser, Marie-Charlotte Guillou, Sébastien Aubourg, et al.. The MIK2/SCOOP Signaling System Contributes to Arabidopsis Resistance Against Herbivory by Modulating Jasmonate and Indole Glucosinolate Biosynthesis. Frontiers in Plant Science, 2022, 13, pp.852808. ⟨10.3389/fpls.2022.852808⟩. ⟨hal-03701614⟩

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