Recent advancements in the role of volatile organic compounds from fungi

Macías‐Rodríguez, Lourdes; Contreras‐Cornejo, Hexon Ángel; López‐Bucio, Jesús Salvador; López‐Bucio, José

doi:10.1002/9781118958308.ch7

Cited by 4 publications

(6 citation statements)

References 90 publications

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“…Age-related effects of one fungus on another, as shown here and observed by Bleiker and Six [ 54 ], are presumably due to variation in FVOC concentrations or composition. Indeed, FVOCs act as semiochemicals in a concentration-dependent manner to inhibit or stimulate fungal growth and reproduction in model systems [ 26 , 33 – 36 ]. However, a given fungus can respond differently to unique FVOC compositions, such as resulting from different emitter species or environmental conditions [ 24 , 26 , 55 ].…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, FVOCs act as semiochemicals in a concentration-dependent manner to inhibit or stimulate fungal growth and reproduction in model systems [ 26 , 33 – 36 ]. However, a given fungus can respond differently to unique FVOC compositions, such as resulting from different emitter species or environmental conditions [ 24 , 26 , 55 ]. Further, inhibitory VOCs from competitively dominant fungi can facilitate antagonistic relationships with less competitive, co-occurring fungi, thereby in part affecting fungal community composition [ 39 , 55 – 58 ].…”

Section: Discussionmentioning

confidence: 99%

“…While largely unexplored, volatile organic compounds emitted by fungi (FVOCs) are receiving increasing recognition for their importance in mediating many aspects of fungal ecology [ 24 – 27 ]. Fungal VOCs can represent several classes of bioactive chemicals, such as acids, alcohols, aldehydes, esters, ketones, terpenes, and thiols [ 25 , 26 ]. These compounds are produced by fungi occupying many ecological niches (e.g., saprophytes, symbionts, and parasites), and influence how fungi interact with plants, animals, and other fungi [ 24 , 28 – 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts

et al. 2016

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Mountain pine beetle (Dendroctonus ponderosae) has killed millions of hectares of pine forests in western North America. Beetle success is dependent upon a community of symbiotic fungi comprised of Grosmannia clavigera, Ophiostoma montium, and Leptographium longiclavatum. Factors regulating the dynamics of this community during pine infection are largely unknown. However, fungal volatile organic compounds (FVOCs) help shape fungal interactions in model and agricultural systems and thus may be important drivers of interactions among bark beetle-associated fungi. We investigated whether FVOCs can mediate interspecific interactions among mountain pine beetle’s fungal symbionts by affecting fungal growth and reproduction. Headspace volatiles were collected and identified to determine species-specific volatile profiles. Interspecific effects of volatiles on fungal growth and conidia production were assessed by pairing physically-separated fungal cultures grown either on a carbon-poor or -rich substrate, inside a shared-headspace environment. Fungal VOC profiles differed by species and influenced the growth and/or conidia production of the other species. Further, our results showed that FVOCs can be used as carbon sources for fungi developing on carbon-poor substrates. This is the first report demonstrating that FVOCs can drive interactions among bark beetle fungal symbionts, and thus are important factors in beetle attack success.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts

et al. 2016

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“…Fungal interactions are facilitated through the exchange of signaling molecules, which are released and secreted by one fungal species and subsequently perceived by receptors present in the other participating species (Carreras-Villaseñor et al, 2012;Raut et al, 2014;Zeilinger & Atanasova, 2020). Fungal VOCs are organic chemicals with low molecular weight that originate from metabolic processes within the fungus, evaporate easily at moderate temperature (Macías-Rodríguez et al, 2015) and participate in the communication between fungal species (Guo et al, 2019;Guo et al, 2020;Weikl et al, 2016;Wonglom et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Lifestyle-specific responses ofTrichodermaspp. in mycoparasitic confrontations and implications for biocontrol ofPopulusxcanescens

Stange,

Kersting,

Sivaprakasam Padmanaban

et al. 2024

Preprint

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Trichodermaspp. are gaining popularity in agriculture and forestry due to their multifaceted roles in promoting plant growth through e.g. nutrient translocation, hormone production, induction of plant systemic resistance, but also direct antagonism of other fungi. However, the mycotrophic nature of the genus bears the risk of possible interference with other native plant-beneficial fungi, such as ectomycorrhiza, in the rhizosphere. Such interference could yield unpredictable consequences for the host plants of these ecosystems. We investigated whetherTrichodermaspp. can differentiate between beneficial ectomycorrhizal fungi (represented byLaccaria bicolorandHebeloma cylindrosporum) and pathogenic fungi (represented byFusarium graminearumandAlternaria alternata) in different confrontation scenarios, including a newly developed olfactometer 'race tube'-like system. Using two independent species,T. harzianum, andT. atrobrunneum, with plant-growth-promoting and immune-stimulating properties towardsPopulus x canescens, our study revealed robustly accelerated growth towards phytopathogens, while showing a contrary response to ectomycorrhizal fungi. Transcriptomic analyses identified distinct genetic programs during interaction corresponding to the lifestyles, emphasizing the expression of mycoparasitism-related genes only in the presence of phytopathogens. The findings reveal a critical mode of fungal community interactions belowground and suggest thatTrichodermaspp. can distinguish between fungal partners of different lifestyles already at a distance.

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“…Mono- and sesquiterpenes, aldehydes and alcohols, ketones, esters, organic acids, and aliphatic and aromatic hydrocarbons are represented among VOCs (Macías‐Rodríguez et al 2015 ). A role for sesquiterpenes emitted by the ectomycorrhizal fungus Laccaria bicolor has been established: they stimulated lateral root growth of the host Populus , and also were able to stimulate root growth in the non-host plant Arabidopsis (Ditengou et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Phytohormones and volatile organic compounds, like geosmin, in the ectomycorrhiza of Tricholoma vaccinum and Norway spruce (Picea abies)

et al. 2020

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The ectomycorrhizospheric habitat contains a diverse pool of organisms, including the host plant, mycorrhizal fungi, and other rhizospheric microorganisms. Different signaling molecules may influence the ectomycorrhizal symbiosis. Here, we investigated the potential of the basidiomycete Tricholoma vaccinum to produce communication molecules for the interaction with its coniferous host, Norway spruce (Picea abies). We focused on the production of volatile organic compounds and phytohormones in axenic T. vaccinum cultures, identified the potential biosynthesis genes, and investigated their expression by RNA-Seq analyses. T. vaccinum released volatiles not usually associated with fungi, like limonene and β-barbatene, and geosmin. Using stable isotope labeling, the biosynthesis of geosmin was elucidated. The geosmin biosynthesis gene ges1 of T. vaccinum was identified, and up-regulation was scored during mycorrhiza, while a different regulation was seen with mycorrhizosphere bacteria. The fungus also released the volatile phytohormone ethylene and excreted salicylic and abscisic acid as well as jasmonates into the medium. The tree excreted the auxin, indole-3-acetic acid, and its biosynthesis intermediate, indole-3-acetamide, as well as salicylic acid with its root exudates. These compounds could be shown for the first time in exudates as well as in soil of a natural ectomycorrhizospheric habitat. The effects of phytohormones present in the mycorrhizosphere on hyphal branching of T. vaccinum were assessed. Salicylic and abscisic acid changed hyphal branching in a concentration-dependent manner. Since extensive branching is important for mycorrhiza establishment, a well-balanced level of mycorrhizospheric phytohormones is necessary. The regulation thus can be expected to contribute to an interkingdom language.

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Recent advancements in the role of volatile organic compounds from fungi

Cited by 4 publications

References 90 publications

Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts

Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts

Lifestyle-specific responses ofTrichodermaspp. in mycoparasitic confrontations and implications for biocontrol ofPopulusxcanescens

Phytohormones and volatile organic compounds, like geosmin, in the ectomycorrhiza of Tricholoma vaccinum and Norway spruce (Picea abies)

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