Self-inhibition of growth and allelopathy through volatile organic compounds in Fusarium solani and Aspergillus fumigatus.

Autor: Takeuchi T; Division of Materials and Manufacturing Science, Osaka University, Suita, Japan.; Department of Chemistry, Nara Women's University, Nara, Japan., Suzuki T; Department of Chemistry, Nara Women's University, Nara, Japan., Kimura T; Department of Chemistry, Nara Women's University, Nara, Japan., Kiuchi M; Division of Materials and Manufacturing Science, Osaka University, Suita, Japan.; Cerast Laboratory Co. Ltd, Setagaya, Japan.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Aug 27; Vol. 19 (8), pp. e0308383. Date of Electronic Publication: 2024 Aug 27 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0308383
Abstrakt: Microbial volatile organic compounds (VOCs) emitted from fungi are known as their secondary metabolites from environmental sources. However, their physiological roles remain to be unclear. Even though the roles are still unknown, VOCs are deliberately released to convey information to both homologous and non-homologous organisms. We investigated the effects of single VOCs (hexanal, benzaldehyde, heptanal, 2-ethyl-1-hexanol, 3-octanone, 2-undecanone, 3-octanol, 2-Phenylethanol, 2-phenyl-2-propanol, phenylbenzaldehyde, 2-pentadecanone, β-trans-bergamotene, β-bisabolene, 2-methyl-5 -(1-methylethyl)pyrazine) on the fungal growth. In parallel, application of the co-culturing system in a growth chamber allowed free gas and VOCs exchange between emitter colonies of Fusarium solani and Aspergillus fumigatus, or between colonies of different growth stages of the same species. Distinct self-inhibition occurred by the emitters of fungal growing colonies against receiver ones on the stage of conidial germination or against the younger colonies at an earlier stage in both fungi. Similarly, the phenomenon of allelopathy appeared to work between growing colonies of F. solani and the germinating conidia or young colonies of A. fumigatus or vice versa. Solid phase microextraction-gas chromatography/mass spectrometry revealed VOCs compounds of each fungi. In F. solani, hexanal and benzaldehyde appeared to be significant inhibitors for colony growth. Benzaldehyde inhibited filamentous growth but not conidial germination. In A. fumigatus, heptanal seemed to be an equivalent effector. The inhibitory effect of benzaldehyde was more distinct on the A. fumigatus conidial germination than its filamentous growth.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Takeuchi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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