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The powdery mildew-resistant Arabidopsis mlo2 mlo6 mlo12 triple mutant displays altered infection phenotypes with diverse types of phytopathogens
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Acevedo-Garcia, Johanna, Gruner, Katrin, Reinstädler, Anja, Kemen, Ariane, Kemen, Eric, Cao, Lingxue, Takken, Frank L. W., Reitz, Marco U., Schäfer, Patrick, O’Connell, Richard J., Kusch, Stefan, Kuhn, Hannah and Panstruga, Ralph (2017) The powdery mildew-resistant Arabidopsis mlo2 mlo6 mlo12 triple mutant displays altered infection phenotypes with diverse types of phytopathogens. Scientific Reports, 7 (1). 9319. doi:10.1038/s41598-017-07188-7 ISSN 2045-2322.
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Official URL: http://dx.doi.org/10.1038/s41598-017-07188-7
Abstract
Arabidopsis thaliana mlo2 mlo6 mlo12 triple mutant plants exhibit complete immunity against infection by otherwise virulent obligate biotrophic powdery mildew fungi such as Golovinomyces orontii. While this phenotype is well documented, the interaction profile of the triple mutant with other microbes is underexplored and incomplete. Here, we thoroughly assessed and quantified the infection phenotypes of two independent powdery mildew-resistant triple mutant lines with a range of microbes. These microorganisms belong to three kingdoms of life, engage in diverse trophic lifestyles, and deploy different infection strategies. We found that interactions with microbes that do not directly enter leaf epidermal cells were seemingly unaltered or showed even enhanced microbial growth or symptom formation in the mlo2 mlo6 mlo12 triple mutants, as shown for Pseudomonas syringae and Fusarium oxysporum. By contrast, the mlo2 mlo6 mlo12 triple mutants exhibited reduced host cell entry rates by Colletotrichum higginsianum, a fungal pathogen showing direct penetration of leaf epidermal cells comparable to G. orontii. Together with previous findings, the results of this study strengthen the notion that mutations in genes MLO2, MLO6 and MLO12 not only restrict powdery mildew colonization, but also affect interactions with a number of other phytopathogens.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QK Botany S Agriculture > SB Plant culture |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||
Library of Congress Subject Headings (LCSH): | Mildew, Pseudomonas syringae , Arabidopsis thaliana, Fusarium oxysporum | ||||||
Journal or Publication Title: | Scientific Reports | ||||||
Publisher: | Nature Publishing Group | ||||||
ISSN: | 2045-2322 | ||||||
Official Date: | 24 August 2017 | ||||||
Dates: |
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Volume: | 7 | ||||||
Number: | 1 | ||||||
Article Number: | 9319 | ||||||
DOI: | 10.1038/s41598-017-07188-7 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 29 August 2017 | ||||||
Date of first compliant Open Access: | 29 August 2017 |
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