The Context of Chemical Communication Driving a Mutualism

Günther, Catrin S.; Newcomb, Richard D.; Buser, Claudia C.

doi:10.1007/s10886-015-0629-z

Cited by 15 publications

(28 citation statements)

References 35 publications

(1 reference statement)

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“…Moreover, D. suzukii adults are strongly attracted to isoamyl‐acetate (Revadi et al ., ), a well‐known yeast volatile. Furthermore, it is not simply the presence or absence of compounds, but the ratio of key volatiles (isoamyl‐acetate and acetic acid) that attracts these Drosophila (Günther et al ., ). Such information regarding the ecological context of chemical attraction is crucial for bait design for pest control strategies.…”

Section: Discussionmentioning

confidence: 97%

Alimentary microbes of winter‐form Drosophila suzukii

Fountain

Bennett

Cobo-Medina

et al. 2018

Insect Molecular Biology

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Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a damaging pest of fruit. Reproductively diapausing adults overwinter in woodlands and remain active on warmer winter days. It is unknown if this adult phase of the lifecycle feeds during the winter period, and what the food source may be. This study characterized the flora in the digestive tract of D. suzukii using a metagenomics approach. Live D. suzukii were trapped in four woodlands in the south of England and their guts dissected for DNA extraction and amplicon-based metagenomics sequencing (internal transcribed spacer and 16S rRNA). Analysis at genus and family taxonomic levels showed high levels of diversity with no differences in digestive tract bacterial or fungal biota between woodland sites of winter-form D. suzukii. Female D. suzukii at one site appeared to have higher bacterial diversity in the alimentary canal than males, but there was a site, sex interaction. Many of the biota were associated with cold, wet climatic conditions and decomposition. This study provides the first evidence that winter-form D. suzukii may be opportunistic feeders during the winter period and are probably exploiting food sources associated with moisture on decomposing vegetation during this time. A core gut microbiome has been identified for winter-form D. suzukii.

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Section: Discussionmentioning

confidence: 97%

Alimentary microbes of winter‐form Drosophila suzukii

Fountain

Bennett

Cobo-Medina

et al. 2018

Insect Molecular Biology

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“…Drosophila flies, for example, may use the information contained in the volatile profiles of such environments as reliable cues for suitable breeding sites. Drosophilid flies are well known for their ability to discriminate between different yeasts and environmental contexts based on volatile information (Becher et al., ; Palanca, Gaskett, Günther, Newcomb, & Goddard, ; Günther, Goddard, Newcomb, & Buser, ). Attraction to yeast volatiles has been suggested to play a role in establishing mutualism‐like yeast– Drosophila associations (Buser, Newcomb, Gaskett, & Goddard, ), while nutritional benefits for the insects are thought to be the main driver of such associations (Anagnostou et al., ).…”

Section: Discussionmentioning

confidence: 99%

Phenotypic responses to microbial volatiles render a mold fungus more susceptible to insect damage

Ortiz

Trienens

Pfohl

et al. 2018

Ecology and Evolution

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In decomposer systems, fungi show diverse phenotypic responses to volatile organic compounds of microbial origin (volatiles). The mechanisms underlying such responses and their consequences for the performance and ecological success of fungi in a multitrophic community context have rarely been tested explicitly. We used a laboratory‐based approach in which we investigated a tripartite yeast–mold–insect model decomposer system to understand the possible influence of yeast‐borne volatiles on the ability of a chemically defended mold fungus to resist insect damage. The volatile‐exposed mold phenotype (1) did not exhibit protein kinase A‐dependent morphological differentiation, (2) was more susceptible to insect foraging activity, and (3) had reduced insecticidal properties. Additionally, the volatile‐exposed phenotype was strongly impaired in secondary metabolite formation and unable to activate “chemical defense” genes upon insect damage. These results suggest that volatiles can be ecologically important factors that affect the chemical‐based combative abilities of fungi against insect antagonists and, consequently, the structure and dynamics of decomposer communities.

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“…To test for variation in attraction to different yeasts, eleven isolates consisting of eight different fruit or insect associated genera were inoculated in strawberry juice (Table SMM in Appendix ). In an earlier study, S. cerevisiae strain FlyKR_78.3 (ScNZ) was isolated from D. simulans and found to be attractive when inoculated in Sauvignon Blanc grape juice (Buser et al, ; Günther et al, ), whereas S. cerevisiae DBVP6044 (ScWA; Liti et al, ) was shown to be repulsive. To test for the impact of the fruit context on yeast preference, attractiveness of these two S. cerevisiae isolates was compared when inoculated in plum (var.…”

Section: Methodsmentioning

confidence: 99%

“…While Drosophila in the melanogaster subgroup breed in fruit, they derive an array of fitness benefits from consuming yeasts which include influences on sexual receptivity (Gorter et al, ), fecundity and larvae development (Buser et al, ; Rohlfs & Kürschner, ) and other life history traits (Anagnostou, Dorsch, & Rohlfs, ). It is therefore unsurprising that at least D. melanogaster and Drosophila simulans are strongly attracted to certain yeast‐derived volatiles (Becher et al, ; Buser et al, ; Günther, Goddard, Newcomb, & Buser, ; Madden et al, ; Stökl et al, ). Yeasts metabolize fruit precursors to produce energy and biomass, but also release a range of yeast volatile organic compounds (YVOCs) as they do so (Cordente, Curtin, Varela, & Pretorius, ; Hazelwood, Daran, Maris, Pronk, & Dickinson, ).…”

Section: Introductionmentioning

confidence: 99%

Are Drosophila preferences for yeasts stable or contextual?

Günther

Knight

Jones

et al. 2019

Ecology and Evolution

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Whether there are general mechanisms, driving interspecific chemical communication is uncertain. Saccharomycetaceae yeast and Drosophila fruit flies, both extensively studied research models, share the same fruit habitat, and it has been suggested their interaction comprises a facultative mutualism that is instigated and maintained by yeast volatiles. Using choice tests, experimental evolution, and volatile analyses, we investigate the maintenance of this relationship and reveal little consistency between behavioral responses of two isolates of sympatric Drosophila species. While D. melanogaster was attracted to a range of different Saccharomycetaceae yeasts and this was independent of fruit type, D. simulans preference appeared specific to a particular S. cerevisiae genotype isolated from a vineyard fly population. This response, however, was not consistent across fruit types and is therefore context‐dependent. In addition, D. simulans attraction to an individual S. cerevisiae isolate was pliable over ecological timescales. Volatile candidates were analyzed to identify a common signal for yeast attraction, and while D. melanogaster generally responded to fermentation profiles, D. simulans preference was more discerning and likely threshold‐dependent. Overall, there is no strong evidence to support the idea of bespoke interactions with specific yeasts for either of these Drosophila genotypes. Rather the data support the idea Drosophila are generally adapted to sense and locate fruits infested by a range of fungal microbes and/or that yeast– Drosophila interactions may evolve rapidly.

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The Context of Chemical Communication Driving a Mutualism

Abstract: Abstract-

Cited by 15 publications

References 35 publications

Alimentary microbes of winter‐form Drosophila suzukii

Alimentary microbes of winter‐form Drosophila suzukii

Phenotypic responses to microbial volatiles render a mold fungus more susceptible to insect damage

Are Drosophila preferences for yeasts stable or contextual?

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