Fungal volatiles have physiological properties

Jaddaoui, Islam El; Rangel, Drauzio E.N.; Bennett, Joan W.

doi:10.1016/j.funbio.2023.03.005

Cited by 17 publications

(6 citation statements)

References 116 publications

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“…For example, 1-octen-3-ol, which was found in P. polonica and P. cambivora and was an important determinant of Phytophthora species from the random forest analysis, was the only compound found at higher levels in the volatiles from solvent extracts of Phytophthora ramorum-inoculated Rhododendron plants compared to mock-inoculated controls [64]. The C-8 alcohol 1-octen-3-ol is one of the most common fungal volatiles [65]. Its occurrence in oomycetes is less reported, but it was produced by P. cinnamomi in culture [66,67].…”

Section: Discussionmentioning

confidence: 96%

Detecting Pathogenic Phytophthora Species Using Volatile Organic Compounds

Sherwood,

Nordström,

Woodward

et al. 2024

Molecules

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There are several highly damaging Phytophthora species pathogenic to forest trees, many of which have been spread beyond their native range by the international trade of live plants and infested materials. Such introductions can be reduced through the development of better tools capable of the early, rapid, and high-throughput detection of contaminated plants. This study utilized a volatilomics approach (solid-phase microextraction coupled to gas chromatography–mass spectrometry) to differentiate between several Phytophthora species in culture and discriminate between healthy and Phytophthora-inoculated European beech and pedunculate oak trees. We tentatively identified 14 compounds that could differentiate eight Phytophthora species from each other in vitro. All of the Phytophthora species examined, except Phytophthora cambivora, uniquely produced at least one compound not observed in the other species; however, most detected compounds were shared between multiple species. Phytophthora polonica had the most unique compounds and was the least similar of all the species examined. The inoculated seedlings had qualitatively different volatile profiles and could be distinguished from the healthy controls by the presence of isokaurene, anisole, and a mix of three unknown compounds. This study supports the notion that volatiles are suitable for screening plant material, detecting tree pathogens, and differentiating between healthy and diseased material.

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Section: Discussionmentioning

confidence: 96%

Detecting Pathogenic Phytophthora Species Using Volatile Organic Compounds

Sherwood,

Nordström,

Woodward

et al. 2024

Molecules

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“…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). Several studies suggest that fungal VOC profiles are similar for fungi with comparable lifestyles (El Jaddaoui et al, 2023; Farh & Jeon, 2020; Guo et al, 2020; Guo et al, 2021; Müller, Faubert et al, 2013; Razo-Belmán et al, 2023) and also Trichoderma species have been demonstrated to produce several volatiles (many being sesquiterpenes), as well as receive, and respond to VOCs (Guo et al, 2019; Guo et al, 2020; Huang et al, 2022; Macías-Rodríguez et al, 2020; Nosenko et al, 2023; Rajani et al, 2021; Ruangwong et al, 2021). It is already well-known that VOCs are pivotal in orchestrating inter-species and inter-kingdom signaling within the rhizosphere, a dynamic environment, where various organisms interact (Faure et al, 2009; Werner et al, 2016).…”

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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“…Microbial volatile organic compounds (MVOCs) are a wide diversity of hydrophobic carbon-based molecules produced by the primary and secondary metabolism of microorganisms such as fungi and bacteria. They are evaporable and can easily travel through the air over long distances ( El Jaddaoui et al., 2023 ). This characteristic is important because it allows MVOCs to act as airborne signals that can be detected by aboveground and underground microorganisms, animals, and plants, influencing their growth and behavior ( Diehl et al., 2023 ; El Jaddaoui et al., 2023 ; Kandasamy et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

“…They are evaporable and can easily travel through the air over long distances ( El Jaddaoui et al., 2023 ). This characteristic is important because it allows MVOCs to act as airborne signals that can be detected by aboveground and underground microorganisms, animals, and plants, influencing their growth and behavior ( Diehl et al., 2023 ; El Jaddaoui et al., 2023 ; Kandasamy et al., 2023 ). MVOCs are considered long-distance messengers in intra- and inter-kingdom ecological interactions.…”

Section: Introductionmentioning

confidence: 99%

“…Classically, volatile organic compounds (VOCs) are described as small odorous compounds with a low molecular weight (< 300 Da), low boiling point, and high vapor pressure under normal conditions (0.1 kPa at 20°C). These characteristics allow their easy spreading through the atmosphere and even soil ( El Jaddaoui et al., 2023 ). Interestingly, numerous studies have demonstrated the crucial role of VOCs emitted by plants in establishing and influencing interactions with other living organisms ( Angeles-Lopez et al., 2018 ; Razo-Belman et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Fungal volatile organic compounds: mechanisms involved in their sensing and dynamic communication with plants

Razo-Belmán,

Ángeles-López,

García-Ortega

et al. 2023

Front. Plant Sci.

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Microbial volatile organic compounds (MVOCs) are mixtures of gas-phase hydrophobic carbon-based molecules produced by microorganisms such as bacteria and fungi. They can act as airborne signals sensed by plants being crucial players in triggering signaling cascades influencing their secondary metabolism, development, and growth. The role of fungal volatile organic compounds (FVOCs) from beneficial or detrimental species to influence the physiology and priming effect of plants has been well studied. However, the plants mechanisms to discern between FVOCs from friend or foe remains significantly understudied. Under this outlook, we present an overview of the VOCs produced by plant-associate fungal species, with a particular focus on the challenges faced in VOCs research: i) understanding how plants could perceive FVOCs, ii) investigating the differential responses of plants to VOCs from beneficial or detrimental fungal strains, and finally, iii) exploring practical aspects related to the collection of VOCs and their eco-friendly application in agriculture.

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Fungal volatiles have physiological properties

Cited by 17 publications

References 116 publications

Detecting Pathogenic Phytophthora Species Using Volatile Organic Compounds

Detecting Pathogenic Phytophthora Species Using Volatile Organic Compounds

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

Fungal volatile organic compounds: mechanisms involved in their sensing and dynamic communication with plants

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