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  Comparative analyses of compatible and incompatible host-pathogen interactions provide insight into host specialization of closely related pathogens

Haueisen, J., Moller, M., Small, C., Maliskat, A., Wilkens, M., Nommensen, A., et al. (2019). Comparative analyses of compatible and incompatible host-pathogen interactions provide insight into host specialization of closely related pathogens. Molecular Plant-Microbe Interactions, 32(Supplement S), 183-183. doi:10.1094/MPMI-32-10-S1.1.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-6B69-E Version Permalink: http://hdl.handle.net/21.11116/0000-0005-6B6A-D
Genre: Conference Report

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 Creators:
Haueisen, J.1, Author              
Moller, M., Author
Small, C.S., Author
Maliskat, A., Author
Wilkens, M., Author
Nommensen, A., Author
Stukenbrock, E. H.1, Author              
Affiliations:
1Max Planck Fellow Group Environmental Genomics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068284              

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 Abstract: Emerging pathogens need to adapt swiftly to exploit new hosts for growth and reproduction. Host shifts can be facilitated by adaptive changes in gene expression landscapes. In order to identify transcriptional patterns related to divergent host specialization in specialized fungal plant pathogens, we compared the development and expression profiles of the wheat pathogen Zymoseptoria tritici and two closely related species Z. pseudotritici and Z. ardabiliae during infection of wheat. Infections by Z. pseudotritici and Z. ardabiliae are incompatible: hyphae penetrate wheat stomata but are blocked in substomatal cavities involving plant defense responses. In contrast, Z. tritici can overcome host defenses to complete its lifecycle in wheat. Nevertheless, the three species show a highly similar developmental program during early host interaction. Gene expression programs are likewise conserved as only 6.5% of orthologous genes are differentially expressed between Z. tritici and the sister species. This indicates that wheat specialization is facilitated by a small number of key traits. We focused on ten differentially expressed candidate effectors and studied their role in wheat infections using Z. tritici mutants. The observed in planta phenotypes cover reduced and increased virulence and changes in temporal disease development indicating that the contribution of these effectors to wheat adaptation is complex and dynamic since speciation of Z. tritici 11,000 years ago.

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Language(s): eng - English
 Dates: 2019-10-012019-10
 Publication Status: Published in print
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 Identifiers: DOI: 10.1094/MPMI-32-10-S1.1
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Title: 18th Congress of International-Society-for-Molecular-Plant-Microbe-Interactions (IS-MPMI)
Place of Event: Glasgow, Scotland
Start-/End Date: 2019-07-14 - 2019-07-18

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Title: Molecular Plant-Microbe Interactions
Source Genre: Journal
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Publ. Info: St. Paul, MN : APS Press, 10
Pages: - Volume / Issue: 32 (Supplement S) Sequence Number: - Start / End Page: 183 - 183 Identifier: ISSN: 0894-0282
CoNE: https://pure.mpg.de/cone/journals/resource/954925558505