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  5. Isolate specific responses of the non-host grass Brachypodium distachyon to the fungal pathogen Zymoseptoria tritici, compared to wheat
 
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Isolate specific responses of the non-host grass Brachypodium distachyon to the fungal pathogen Zymoseptoria tritici, compared to wheat

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Download combine 12th Feb Reilly.pdf12.12 MB
Author(s)
Reilly, Aisling 
Karki, Sujit Jung 
Twamley, Anthony 
Tiley, Anna 
Kildea, Steven 
Feechan, Angela 
Uri
http://hdl.handle.net/10197/12438
Date Issued
February 2021
Date Available
20T16:27:50Z August 2021
Abstract
Septoria tritici blotch (STB) is an important foliar disease of wheat that is caused by the fungal pathogen Zymoseptoria tritici. The grass Brachypodium distachyon has been used previously as a model system for cereal-pathogen interactions. In this study, we examined the non-host resistance (NHR) response of B. distachyon to two different Z. tritici isolates in comparison to wheat. These isolates vary in aggressiveness on wheat cv. Remus displaying significant differences in disease and pycnidia coverage. Using microscopy, we found that similar isolate specific responses were observed for H2O2 accumulation and cell death in both wheat and B. distachyon. Despite this, induction of isolate specific patterns of defence gene expression by Z. tritici did differ between B. distachyon and wheat. Our results suggest that phenylalanine ammonia lyase (PAL) expression may be important for NHR in B. distachyon while pathogenesis-related (PR) genes and expression of genes regulating reactive oxygen species (ROS) may be important to limit disease in wheat. Future studies of the B. distachyon-Z. tritici interaction may allow identification of conserved plant immunity targets which are responsible for the isolate specific responses observed in both plant species.
Sponsorship
European Commission Horizon 2020
Science Foundation Ireland
Type of Material
Journal Article
Publisher
American Phytopathological Society
Journal
Phytopathology
Volume
111
Issue
2
Start Page
356
End Page
368
Copyright (Published Version)
2021 The American Phytopathological Society
Keywords
  • Fungal pathogens

  • Pathogen recognition

  • Plants

  • Zymoseptoria tritici

  • Brachypodium distachy...

  • Wheat

DOI
10.1094/phyto-02-20-0041-r
Language
English
Status of Item
Peer reviewed
ISSN
0031-949X
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Agriculture and Food Science Research Collection
Scopus© citations
1
Acquisition Date
Mar 24, 2023
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Mar 26, 2023
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