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

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

© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 232(2021), 6 vom: 30. Dez., Seite 2491-2505
1. Verfasser: Alfonso, Esteban (VerfasserIn)
Weitere Verfasser: Stahl, Elia, Glauser, Gaétan, Bellani, Etienne, Raaymakers, Tom M, Van den Ackerveken, Guido, Zeier, Jürgen, Reymond, Philippe
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Botrytis cinerea Pieris brassicae herbivore interactions indolic metabolism insect eggs plant systemic acquired resistance (SAR) Arabidopsis Proteins mehr... Salicylic Acid O414PZ4LPZ
Beschreibung
Zusammenfassung:© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.
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
Beschreibung:Date Completed 06.01.2022
Date Revised 28.03.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17732