<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Fusarium oxysporum</italic> is the primary pathogen of blueberry root rot; furthermore, we found that <italic>Fusarium commune</italic> can also cause root rot in blueberries. <italic>Trichoderma</italic> spp. is widely used to control plant diseases. We isolated <italic>Trichoderma asperellum</italic> (TM11) from blueberry rhizosphere soil to explore its control effect and mechanism on <italic>F. oxysporum</italic> and <italic>F. commune</italic>. We found that the inhibitory effects of TM11 volatiles and broth metabolites on <italic>F. oxysporum</italic> were significant, but only <italic>F. commune</italic> volatile metabolites had a significant inhibitory effect on its growth. Twelve known antimicrobial metabolites were detected from the methanol extract of TM11 fermentation broth by HPLC-MS. TM11 lysed and coiled around the hyphae of <italic>F. oxysporum</italic> and <italic>F. commune</italic>. The pot experiment showed that TM11 had significant control effects against <italic>F. oxysporum</italic> and <italic>F. commune</italic>, and inoculation of TM11 prior to that of <italic>F. oxysporum</italic> and <italic>F. commune</italic> was more effective. The TM11, TM11 and <italic>F. oxysporum</italic>, or <italic>F. commune</italic> and distilled water treatments had different effects on the activities of superoxide dismutase, peroxidase and catalase, and the enzyme activity levels exhibited the following order: TM11 > TM11 and <italic>F. oxysporum</italic> or <italic>F. commune</italic> > distilled water. The results showed that TM11 provided effective control of blueberry root rot.</p>
</abstract>

Fusarium oxysporum is the primary pathogen of blueberry root rot; furthermore, we found that Fusarium commune can also cause root rot in blueberries. Trichoderma spp. is widely used to control plant diseases. We isolated Trichoderma asperellum (TM11) from blueberry rhizosphere soil to explore its control effect and mechanism on F. oxysporum and F. commune. We found that the inhibitory effects of TM11 volatiles and broth metabolites on F. oxysporum were significant, but only F. commune volatile metabolites had a significant inhibitory effect on its growth. Twelve known antimicrobial metabolites were detected from the methanol extract of TM11 fermentation broth by HPLC-MS. TM11 lysed and coiled around the hyphae of F. oxysporum and F. commune. The pot experiment showed that TM11 had significant control effects against F. oxysporum and F. commune, and inoculation of TM11 prior to that of F. oxysporum and F. commune was more effective. The TM11, TM11 and F. oxysporum, or F. commune and distilled water treatments had different effects on the activities of superoxide dismutase, peroxidase and catalase, and the enzyme activity levels exhibited the following order: TM11 > TM11 and F. oxysporum or F. commune > distilled water. The results showed that TM11 provided effective control of blueberry root rot.

Control Effect and Mechanism of <italic>Trichoderma asperellum</italic> TM11 against Blueberry Root Rot

Polish Journal of Microbiology

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

Control Effect and Mechanism of  TM11 against Blueberry Root Rot

Fusarium oxysporum is the primary pathogen of blueberry root rot; furthermore, we found that Fusarium commune can also cause root rot in blueberries....

Control Effect and Mechanism of Trichoderma asperellum TM11 against Blueberry Root Rot

Article Category: Original Paper

Published Online: Sep 20, 2023

Page range: 325 - 337

Received: May 25, 2023

Accepted: Aug 02, 2023

DOI: https://doi.org/10.33073/pjm-2023-034

Keywords
blueberry root rot, biocontrol mechanisms, pot tests

© 2023 Si Li et al., published by Sciendo

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

Control Effect and Mechanism of Trichoderma asperellum TM11 against Blueberry Root Rot

Article Category: Original Paper

Published Online: Sep 20, 2023

Page range: 325 - 337

Received: May 25, 2023

Accepted: Aug 02, 2023

DOI: https://doi.org/10.33073/pjm-2023-034

Keywordsblueberry root rot, biocontrol mechanisms, pot tests

© 2023 Si Li et al., published by Sciendo

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

Keywords
blueberry root rot, biocontrol mechanisms, pot tests