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Biogenic volatile compounds (BVOCs) produced by fungal endophytes reduce zearalenone (ZEN) and trichothecenes produced by Fusarium graminearum

Author
Organization
Project
MycoKey (Integrated and innovative key actions for mycotoxin management in the food and feed chain)
Abstract
Fusarium graminearum causes Giberella Ear Rot in maize which results in a tremendous yield loss. In addition, the infected grains are predominantly contaminated with certain mycotoxins such as deoxynivalenol (DON), the acetylated forms of DON as 15-acetyldeoxynivalenol (15-ADON) and zearalenone (ZEN). Although chemical plant protection could in part deal with this dual loss, a growing ecological public awareness limits the application of agrochemicals. Moreover, driven by health and environmental concerns the European Union developed a new EU directive on sustainable use of pesticides. In the current work, we explored the potential effect of biogenic volatile compounds (BVOCs) produced by the endophytic fungal genera of Epicoccum and Sordaria, to control F. graminearum in comparative trials with different strains of the well-known biocontrol agents Trichoderma and Clonostachys spp. Furthermore, we investigated the effect of these endophytes on the levels of the most commonly produced mycotoxins, DON, 15-ADON and ZEN. In in vitro assays, the selected endophytic fungi were able to reduce both trichothecenes (DON and 15-ADON) and fungal growth via direct competition. Remarkably, these endophytes were also able to display their biocontrol traits even when there was no direct contact with the pathogen which points to the involvement of BVOCs. Although all endophytes displayed a variable level of biocontrol in direct contact experiments, none of them convincingly resulted in a reduction of ZEN. However, when F. graminearum was exposed to BVOCs produced by the endophytes, a clear reduction in ZEN was observed which highlights the great potential of BVOCs as new agrochemical agents to control ZEN. Exposure of F. graminearum to the well-known biocontrol agents Trichoderma and Clonostachys did not result in ZEN reduction. Finally, biocontrol traits were validated in an in planta assay using a maize-F. graminearum model system. In maize plants, a clear reduction of ZEN, DON, 15-ADON in addition to the modified mycotoxin deoxynivalenol-3-glucoside levels was observed in the presence of the fungal endophytes.
Keywords
Fusarium graminearum, biocontrol, endophytes, mycotoxins, Biogenic volatiles

Citation

Please use this url to cite or link to this publication:

Chicago
Fathi Abdallah Abdelmohsen, Mohamed, Sofie Landschoot, Marthe De Boevre, Sarah De Saeger, Geert Haesaert, and Kris Audenaert. 2018. “Biogenic Volatile Compounds (BVOCs) Produced by Fungal Endophytes Reduce Zearalenone (ZEN) and Trichothecenes Produced by Fusarium Graminearum.” In MycoKey, 2nd International Conference, Abstracts.
APA
Fathi Abdallah Abdelmohsen, M., Landschoot, S., De Boevre, M., De Saeger, S., Haesaert, G., & Audenaert, K. (2018). Biogenic volatile compounds (BVOCs) produced by fungal endophytes reduce zearalenone (ZEN) and trichothecenes produced by Fusarium graminearum. MycoKey, 2nd International conference, Abstracts. Presented at the 2nd MycoKey international conference: Integrated solutions for mycotoxin management.
Vancouver
1.
Fathi Abdallah Abdelmohsen M, Landschoot S, De Boevre M, De Saeger S, Haesaert G, Audenaert K. Biogenic volatile compounds (BVOCs) produced by fungal endophytes reduce zearalenone (ZEN) and trichothecenes produced by Fusarium graminearum. MycoKey, 2nd International conference, Abstracts. 2018.
MLA
Fathi Abdallah Abdelmohsen, Mohamed, Sofie Landschoot, Marthe De Boevre, et al. “Biogenic Volatile Compounds (BVOCs) Produced by Fungal Endophytes Reduce Zearalenone (ZEN) and Trichothecenes Produced by Fusarium Graminearum.” MycoKey, 2nd International Conference, Abstracts. 2018. Print.
@inproceedings{8574822,
  abstract     = {Fusarium graminearum causes Giberella Ear Rot in maize which results in a tremendous yield loss. In addition, the infected grains are predominantly contaminated with certain mycotoxins such as deoxynivalenol (DON), the acetylated forms of DON as 15-acetyldeoxynivalenol (15-ADON) and zearalenone (ZEN). Although chemical plant protection could in part deal with this dual loss, a growing ecological public awareness limits the application of agrochemicals. Moreover, driven by health and environmental concerns the European Union developed a new EU directive on sustainable use of pesticides. In the current work, we explored the potential effect of biogenic volatile compounds (BVOCs) produced by the endophytic fungal genera of Epicoccum and Sordaria, to control F. graminearum in comparative trials with different strains of the well-known biocontrol agents Trichoderma and Clonostachys spp. Furthermore, we investigated the effect of these endophytes on the levels of the most commonly produced mycotoxins, DON, 15-ADON and ZEN. In in vitro assays, the selected endophytic fungi were able to reduce both trichothecenes (DON and 15-ADON) and fungal growth via direct competition. Remarkably, these endophytes were also able to display their biocontrol traits even when there was no direct contact with the pathogen which points to the involvement of BVOCs. Although all endophytes displayed a variable level of biocontrol in direct contact experiments, none of them convincingly resulted in a reduction of ZEN. However, when F. graminearum was exposed to BVOCs produced by the endophytes, a clear reduction in ZEN was observed which highlights the great potential of BVOCs as new agrochemical agents to control ZEN. Exposure of F. graminearum to the well-known biocontrol agents Trichoderma and Clonostachys did not result in ZEN reduction. Finally, biocontrol traits were validated in an in planta assay using a maize-F. graminearum model system. In maize plants, a clear reduction of ZEN, DON, 15-ADON in addition to the modified mycotoxin deoxynivalenol-3-glucoside levels was observed in the presence of the fungal endophytes.},
  author       = {Fathi Abdallah Abdelmohsen, Mohamed and Landschoot, Sofie and De Boevre, Marthe and De Saeger, Sarah and Haesaert, Geert and Audenaert, Kris},
  booktitle    = {MycoKey, 2nd International conference, Abstracts},
  language     = {eng},
  location     = {Wuhan, PR China},
  title        = {Biogenic volatile compounds (BVOCs) produced by fungal endophytes reduce zearalenone (ZEN) and trichothecenes produced by Fusarium graminearum},
  year         = {2018},
}