Adaptive traits of bark and ambrosia beetle-associated fungi

Veselská, Tereza; Skelton, James; Kostovčík, Martin; Hulcr, Jiří; Baldrián, Petr; Chudíčková, Milada; Cajthaml, Tomáš; Vojtová, Tereza; García‐Fraile, Paula; Kolařík, Miroslav

doi:10.1016/j.funeco.2019.06.005

Cited by 26 publications

(25 citation statements)

References 61 publications

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“…Along with the depletion of the original mycobiome, we speculate that an exotic species may be prone to acquire new microorganisms due to the potential mismatch of the mechanisms maintaining symbioses with the invaded ecosystems. Symbioses are the result of a long co-evolution, and both the host and the symbionts present a series of chemical, structural, and genomic co-adaptations (Blaz et al, 2018; Mayers et al, 2019; Skelton et al, 2019; Biedermann, De Fine Licht & Rohlfs, 2019; Veselská et al, 2019). The mechanisms that serve to maintain existing symbiosis may be challenged by the newly encountered microbiomes and might not work properly, leading to the establishment of new associations.…”

Section: Discussionmentioning

confidence: 99%

Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion

Rassati

Marini

Malacrinò

2019

PeerJ

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Microbial symbionts can play critical roles when their host attempts to colonize a new habitat. The lack of symbiont adaptation can in fact hinder the invasion process of their host. This scenario could change if the exotic species are able to acquire microorganisms from the invaded environment. Understanding the ecological factors that influence the take-up of new microorganisms is thus essential to clarify the mechanisms behind biological invasions. In this study, we tested whether different forest habitats influence the structure of the fungal communities associated with ambrosia beetles. We collected individuals of the most widespread exotic (Xylosandrus germanus) and native (Xyleborinus saxesenii) ambrosia beetle species in Europe in several old-growth and restored forests. We characterized the fungal communities associated with both species via metabarcoding. We showed that forest habitat shaped the community of fungi associated with both species, but the effect was stronger for the exotic X. germanus. Our results support the hypothesis that the direct contact with the mycobiome of the invaded environment might lead an exotic species to acquire native fungi. This process is likely favored by the occurrence of a bottleneck effect at the mycobiome level and/or the disruption of the mechanisms sustaining co-evolved insect-fungi symbiosis. Our study contributes to the understanding of the factors affecting insect-microbes interactions, helping to clarify the mechanisms behind biological invasions.

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Section: Discussionmentioning

confidence: 99%

Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion

Rassati

Marini

Malacrinò

2019

PeerJ

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“…In contrast to ectosymbionts, little is known about the endosymbionts living in gut or hemolymph. Moreover, although several studies have focused on unveiling the paradigms of the fungus–beetle interaction over the decades [ 10 , 14 ], the bacteria–beetle interactions have only recently received increased attention [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

A New Perspective of Pseudomonas—Host Interactions: Distribution and Potential Ecological Functions of the Genus Pseudomonas within the Bark Beetle Holobiont

Saati‐Santamaría

Rivas

Kolařík

et al. 2021

Biology

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Symbiosis between microbes and insects has been raised as a promising area for understanding biological implications of microbe–host interactions. Among them, the association between fungi and bark beetles has been generally recognized as essential for the bark beetle ecology. However, many works investigating bark beetle bacterial communities and their functions usually meet in a common finding: Pseudomonas is a broadly represented genus within this holobiont and it may provide beneficial roles to its host. Thus, we aimed to review available research on this microbe–host interaction and point out the probable relevance of Pseudomonas strains for these insects, in order to guide future research toward a deeper analysis of the importance of these bacteria for the beetle’s life cycle.

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“…Along with the depletion of the original mycobiome, we speculate that an exotic species may be prone to acquire new microorganisms due to the potential mismatch of the mechanisms maintaining symbioses with the invaded ecosystems. Symbioses are the result of a long co-evolution, and both the host and the symbionts present a series of chemical, structural, and genomic coadaptations (Blaz et al, 2018;Mayers et al, 2019;Skelton et al, 2019;Biedermann, De Fine Licht & Rohlfs, 2019;Veselská et al, 2019). The mechanisms that serve to maintain existing symbiosis may be challenged by the newly encountered microbiomes and might not work properly, leading to the establishment of new associations.…”

Section: Discussionmentioning

confidence: 99%

Peer Review #2 of "Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion (v0.1)"

2019

View full text Add to dashboard Cite

Microbial symbionts can play critical roles when their host attempts to colonize a new habitat. The lack of symbiont adaptation can in fact hinder the invasion process of their host. This scenario could change if the exotic species are able to acquire microorganisms from the invaded environment. Understanding the ecological factors that influence the take-up of new microorganisms is thus essential to clarify the mechanisms behind biological invasions. In this study, we tested whether different habitats influence the structure of the fungal communities associated with ambrosia beetles. To do so, we collected individuals of the most widespread exotic (Xylosandrus germanus) and native (Xyleborinus saxesenii) ambrosia beetles species in Europe in several old-growth and restored forests. We characterized the fungal communities associated with both species via metabarcoding. We showed that forest habitat shaped the community of fungi associated with both beetles, but the effect was stronger for the exotic X. germanus. Our results support the hypothesis that the direct contact with the mycobiome of the invaded environment can lead an exotic species to acquire native fungi. This mechanisms is likely favored by the occurrence of a bottleneck effect at the mycobiome level and/or the disruption of the mechanisms sustaining co-evolved insect-fungi symbiosis. Our study contributes to the understanding of the factors affecting insect-microbes interactions, helping to clarify the mechanisms behind biological invasions.

show abstract

Adaptive traits of bark and ambrosia beetle-associated fungi

Cited by 26 publications

References 61 publications

Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion

Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion

A New Perspective of Pseudomonas—Host Interactions: Distribution and Potential Ecological Functions of the Genus Pseudomonas within the Bark Beetle Holobiont

Peer Review #2 of "Acquisition of fungi from the environment modifies ambrosia beetle mycobiome during invasion (v0.1)"

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