<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In dual culture confrontation assays, basidiomycete <italic>Irpex lacteus</italic> efficiently antagonized <italic>Fusarium</italic> spp., <italic>Colletotrichum</italic> spp., and <italic>Phytophthora</italic> spp. phytopathogenic strains, with growth inhibition percentages between 16.7–46.3%. Antibiosis assays evaluating the inhibitory effect of soluble extracellular metabolites indicated <italic>I. lacteus</italic> strain inhibited phytopathogens growth between 32.0–86.7%. Metabolites in the extracellular broth filtrate, identified by UPLC-QTOF mass spectrometer, included nine terpenes, two aldehydes, and derivatives of a polyketide, a quinazoline, and a xanthone, several of which had antifungal activity. <italic>I. lacteus</italic> strain and its extracellular metabolites might be valuable tools for phytopathogenic fungi and oomycete biocontrol of agricultural relevance.</p></abstract>

In dual culture confrontation assays, basidiomycete Irpex lacteus efficiently antagonized Fusarium spp., Colletotrichum spp., and Phytophthora spp. phytopathogenic strains, with growth inhibition percentages between 16.7–46.3%. Antibiosis assays evaluating the inhibitory effect of soluble extracellular metabolites indicated I. lacteus strain inhibited phytopathogens growth between 32.0–86.7%. Metabolites in the extracellular broth filtrate, identified by UPLC-QTOF mass spectrometer, included nine terpenes, two aldehydes, and derivatives of a polyketide, a quinazoline, and a xanthone, several of which had antifungal activity. I. lacteus strain and its extracellular metabolites might be valuable tools for phytopathogenic fungi and oomycete biocontrol of agricultural relevance.

Growth Inhibition of Phytopathogenic Fungi and Oomycetes by Basidiomycete <italic>Irpex lacteus</italic> and Identification of its Antimicrobial Extracellular Metabolites

Polish Journal of Microbiology

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Growth Inhibition of Phytopathogenic Fungi and Oomycetes by Basidiomycete  and Identification of its Antimicrobial Extracellular Metabolites

In dual culture confrontation assays, basidiomycete Irpex lacteus efficiently antagonized Fusarium spp., Colletotrichum spp., and Phytophthora spp....

Growth Inhibition of Phytopathogenic Fungi and Oomycetes by Basidiomycete Irpex lacteus and Identification of its Antimicrobial Extracellular Metabolites

Article Category: short-communication

Published Online: Mar 19, 2021

Page range: 131 - 136

Received: Dec 18, 2020

Accepted: Feb 23, 2021

DOI: https://doi.org/10.33073/pjm-2021-014

Keywords
antagonism, antifungal, extracellular metabolites, mycelium, terpenes

© 2021 Daisy Pineda-Suazo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Growth Inhibition of Phytopathogenic Fungi and Oomycetes by Basidiomycete Irpex lacteus and Identification of its Antimicrobial Extracellular Metabolites

Article Category: short-communication

Published Online: Mar 19, 2021

Page range: 131 - 136

Received: Dec 18, 2020

Accepted: Feb 23, 2021

DOI: https://doi.org/10.33073/pjm-2021-014

Keywordsantagonism, antifungal, extracellular metabolites, mycelium, terpenes

© 2021 Daisy Pineda-Suazo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
antagonism, antifungal, extracellular metabolites, mycelium, terpenes