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Journal Articles Science Advances Year : 2022

Tandem metalloenzymes gate plant cell entry by pathogenic fungi

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Bastien Bissaro
Mireille Haon
Sacha Grisel

Abstract

Global food security is endangered by fungal phytopathogens causing devastating crop production losses. Many of these pathogens use specialized appressoria cells to puncture plant cuticles. Here, we unveil a pair of alcohol oxidase–peroxidase enzymes to be essential for pathogenicity. Using Colletotrichum orbiculare , we show that the enzyme pair is cosecreted by the fungus early during plant penetration and that single and double mutants have impaired penetration ability. Molecular modeling, biochemical, and biophysical approaches revealed a fine-tuned interplay between these metalloenzymes, which oxidize plant cuticular long-chain alcohols into aldehydes. We show that the enzyme pair is involved in transcriptional regulation of genes necessary for host penetration. The identification of these infection-specific metalloenzymes opens new avenues on the role of wax-derived compounds and the design of oxidase-specific inhibitors for crop protection.
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Dates and versions

hal-03918339 , version 1 (02-01-2023)

Licence

Attribution - CC BY 4.0

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Cite

Bastien Bissaro, Sayo Kodama, Takumi Nishiuchi, Anna Maria Díaz-Rovira, Hayat Hage, et al.. Tandem metalloenzymes gate plant cell entry by pathogenic fungi. Science Advances , 2022, 8 (51), ⟨10.1126/sciadv.ade9982⟩. ⟨hal-03918339⟩
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