Insect eggs trigger systemic acquired resistance against a fungal and an oomycete pathogen.

Détails

Ressource 1Télécharger: Alfonso_et_al-NewPhytol2021_all.pdf (4096.85 [Ko])
Etat: Public
Version: de l'auteur⸱e
Licence: CC BY-NC-ND 4.0
ID Serval
serval:BIB_698D659B460C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Insect eggs trigger systemic acquired resistance against a fungal and an oomycete pathogen.
Périodique
The New phytologist
Auteur⸱e⸱s
Alfonso E., Stahl E., Glauser G., Bellani E., Raaymakers T.M., Van den Ackerveken G., Zeier J., Reymond P.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Statut éditorial
Publié
Date de publication
12/2021
Peer-reviewed
Oui
Volume
232
Numéro
6
Pages
2491-2505
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Plants are able to detect insect eggs deposited on leaves. In Arabidopsis, eggs of the butterfly species Pieris brassicae (common name large white) induce plant defenses and activate the salicylic acid (SA) pathway. We previously discovered that oviposition triggers a systemic acquired resistance (SAR) against the bacterial hemibiotroph pathogen Pseudomonas syringae. Here, we show that insect eggs or treatment with egg extract (EE) induce SAR against the fungal necrotroph Botrytis cinerea BMM and the oomycete pathogen Hyaloperonospora arabidopsidis Noco2. This response is abolished in ics1, ald1 and fmo1, indicating that the SA pathway and the N-hydroxypipecolic acid (NHP) pathway are involved. Establishment of EE-induced SAR in distal leaves potentially involves tryptophan-derived metabolites, including camalexin. Indeed, SAR is abolished in the biosynthesis mutants cyp79B2 cyp79B3, cyp71a12 cyp71a13 and pad3-1, and camalexin is toxic to B. cinerea in vitro. This study reveals an interesting mechanism by which lepidopteran eggs interfere with plant-pathogen interactions.
Mots-clé
Animals, Arabidopsis Proteins/metabolism, Gene Expression Regulation, Plant, Insecta/metabolism, Oomycetes/metabolism, Plant Diseases, Pseudomonas syringae/metabolism, Salicylic Acid, Botrytis cinerea, Pieris brassicae, herbivore interactions, indolic metabolism, insect eggs, plant, systemic acquired resistance (SAR)
Pubmed
Web of science
Open Access
Oui
Création de la notice
21/09/2021 10:53
Dernière modification de la notice
27/09/2023 5:58
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