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

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Version: author
License: CC BY-NC-ND 4.0
Serval ID
serval:BIB_698D659B460C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Insect eggs trigger systemic acquired resistance against a fungal and an oomycete pathogen.
Journal
The New phytologist
Author(s)
Stahl E., Alfonso E., Glauser G., Bellani E., Raaymakers T.M., Van den Ackerveken G., Zeier J., Reymond P.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Publication state
Published
Issued date
12/2021
Peer-reviewed
Oui
Volume
232
Number
6
Pages
2491-2505
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
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.
Keywords
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
Yes
Create date
21/09/2021 10:53
Last modification date
23/02/2022 7:10
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