The Ustilago maydis repetitive effector Rsp3 blocks the antifungal activity of 
mannose-binding maize proteins

Ma, L.; Wang, L.; Trippel, C.; Mendoza-Mendoza, A.; Ullmann, S.; Moretti, M.; Carsten, A.; Kahnt, J.; Reissmann, S.; Zechmann, B.; Bange, G.; Kahmann, R.

doi:10.1038/s41467-018-04149-0

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The Ustilago maydis repetitive effector Rsp3 blocks the antifungal activity of mannose-binding maize proteins

MPG-Autoren

Ma, L.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254820

Wang, L.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254775

Trippel, C.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254529

Mendoza-Mendoza, A.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

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Ullmann, S.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

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Moretti, M.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254184

Carsten, A.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254414

Kahnt, J.
Core Facility Mass Spectrometry and Proteomics, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254635

Reissmann, S.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

/persons/resource/persons254413

Kahmann, R.
Department of Organismic Interactions, Alumni, Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

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Zitation

Ma, L., Wang, L., Trippel, C., Mendoza-Mendoza, A., Ullmann, S., Moretti, M., et al. (2018). The Ustilago maydis repetitive effector Rsp3 blocks the antifungal activity of mannose-binding maize proteins. NATURE COMMUNICATIONS, 9: 1711. doi:10.1038/s41467-018-04149-0.

Zitierlink: https://hdl.handle.net/21.11116/0000-0004-45F8-7

Zusammenfassung

To cause disease in maize, the biotrophic fungus Ustilago maydis secretes a large arsenal of effector proteins. Here, we functionally characterize the repetitive effector Rsp3 (repetitive secreted protein 3), which shows length polymorphisms in field isolates and is highly expressed during biotrophic stages. Rsp3 is required for virulence and anthocyanin accumulation. During biotrophic growth, Rsp3 decorates the hyphal surface and interacts with at least two secreted maize DUF26-domain family proteins (designated AFP1 and AFP2). AFP1 binds mannose and displays antifungal activity against the rsp3 mutant but not against a strain constitutively expressing rsp3. Maize plants silenced for AFP1 and AFP2 partially rescue the virulence defect of rsp3 mutants, suggesting that blocking the antifungal activity of AFP1 and AFP2 by the Rsp3 effector is an important virulence function. Rsp3 orthologs are present in all sequenced smut fungi, and the ortholog from Sporisorium reilianum can complement the rsp3 mutant of U. maydis, suggesting a novel widespread fungal protection mechanism.