Skip to main content
ISMPMI Congress 2025 Main banner
Icon Legend
This session is not in your schedule.
This session is in your schedule. Click again to remove it.

Poster

Session: Session 2 Presenting Authors at Posters (Odds)

P-093 - Modulation of Arabidopsis thaliana development and disease resistance by fungal volatile organic compounds

Wednesday, July 16, 2025
13:30 - 15:15  
Location: Confex Hall 3
Discrimination of friend from foe

    Presenting Author(s)

  • SI

    Sara I. Yugueros, PhD

    Universidad de Leon
    León, Castilla y Leon, Spain

    • Author(s)

  • AL

    Asier Largo-Gosens

    Plant Physiology, Universidad de León, León, Spain. Institute of Molecular Biology, Genomics and Proteomics (INBIOMIC), Universidad de León, León, Spain.
    León, Castilla y Leon, Spain

  • CU

    Cristina Ubeda

    Universidad de Leon
    Leon, Castilla y Leon, Spain

  • AE

    Antonio Encina

    Universidad de Leon
    Leon, Castilla y Leon, Spain

  • AM

    Alba Manga-Robles

    Universidad de Leon
    Leon, Castilla y Leon, Spain

  • HM

    Hugo Mélida

    Plant Physiology, Universidad de León, León, Spain. Institute of Molecular Biology, Genomics and Proteomics (INBIOMIC), Universidad de León, León, Spain.
    León, Castilla y Leon, Spain



Translator

 

 



 



Previous studies on plant-microbe interactions have suggested that certain fungi emit volatile organic compounds (VOCs) that are able to modulate plant development and their responses to various stresses. Some fungal species, such as Trichoderma harzianum, are known to produce VOCs, while the production of VOCs in other phylogenetically divergent species such as Mucor mucedo was unknown. Therefore, the aims of this work were to analyze the profile of VOCs emitted by these fungal species and to study their effects on the development and defensive responses of Arabidopsis thaliana. Initially, a different accumulation of specific VOCs was observed in the volatilome analysis performed. Subsequent observation revealed that prolonged exposure to VOCs emitted by both fungal species had detrimental effects on the growth of A. thaliana, while shorter exposures enhanced the plant defense against the phytopathogenic bacteria Pseudomonas syringae. Next, we tried to understand the basis of such increased resistance, which does not seem to be related to increased early immune responses, but rather to later responses that trigger a complex metabolic reprogramming. Given the relevance of VOC-mediated plant-fungus interactions revealed in our results, it is of crucial importance to understand them in greater depth in order to contribute to the development of new biological control methods that reduce the use of chemical products that are harmful for the environment.