Holighaus, Gerrit

[["dc.bibliographiccitation.firstpage","5681"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Applied Microbiology and Biotechnology"],["dc.bibliographiccitation.lastpage","5689"],["dc.bibliographiccitation.volume","100"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Rohlfs, Marko"],["dc.date.accessioned","2018-11-07T10:12:10Z"],["dc.date.available","2018-11-07T10:12:10Z"],["dc.date.issued","2016"],["dc.description.abstract","Interactions between insects and fungi are widespread, and important mediators of these interactions are fungal chemicals that can therefore be considered as allelochemicals. Numerous studies suggest that fungal chemicals can affect insects in many different ways. Here, we apply the terminology established by insect-plant ecologists for categorizing the effect of fungal allelochemicals on insects and for evaluating the application potential of these chemicals in insect pest management. Our literature survey shows that fungal volatile and non-volatile chemicals have an enormous potential to influence insect behavior and fitness. Many of them still remain to be discovered, but some recent examples of repellents and toxins could open up new ways for developing safe insect control strategies. However, we also identified shortcomings in our understanding of the chemical ecology of insect-fungus interactions and the way they have been investigated. In particular, the mode-of-action of fungal allelochemicals has often not been appropriately designated or examined, and the way in which induction by insects affects fungal chemical diversity is poorly understood. This review should raise awareness that in-depth ecological studies of insect-fungus interactions can reveal novel allelochemicals of particular benefit for the development of innovative insect pest management strategies."],["dc.description.sponsorship","German Research Foundation, DFG [RO3523/3-2]"],["dc.identifier.doi","10.1007/s00253-016-7573-x"],["dc.identifier.isi","000378725700002"],["dc.identifier.pmid","27147531"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40182"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1432-0614"],["dc.relation.issn","0175-7598"],["dc.title","Fungal allelochemicals in insect pest management"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Phytopathology®"],["dc.contributor.author","Nones, Stefano"],["dc.contributor.author","Sousa, Edmundo"],["dc.contributor.author","Holighaus, Gerrit"],["dc.date.accessioned","2022-05-02T08:02:22Z"],["dc.date.available","2022-05-02T08:02:22Z"],["dc.date.issued","2022"],["dc.description.abstract","In Portugal, fungal symbionts of the ambrosia beetle Platypus cylindrus affect tree vigor of cork oak (Quercus suber) and are linked with the cork oak decline process. Fungal symbionts play crucial roles in bark and ambrosia beetles life history and recent work indicates complex interactions on the fungal and plant metabolic level. Colonized trees may respond with an array of currently unknown volatile metabolites being indicative of such interactions, acting as infochemicals with their environment. In this study, we examined volatile organic compounds (VOCs) of cork oak seedlings wound-inoculated with strains of three fungal associates of P. cylindrus (Raffaelea montetyi, R. quercina and Ceratocystiopsis sp. nov.) over a 45-day period by means of thermodesorption GC/MS techniques. Fungal strains induced largely quantitative but species-specific changes among the 58 VOCs characterized. Overall, monoterpenes – the major volatiles of cork oak foliage, were significantly reduced, possibly a result of fungal biotransformation. Acetophenone, sulcatone, nonanal – volatiles known for mediating ambrosia beetle behavior, increased in response to fungal inoculation. Qualitative VOC profiles of excised tissue of wood lesions (21 VOCs) and pure fungal cultures (60 VOC) showed little overlap with seedling VOCs, indicating their plant derived but fungal induced origin. This chemoecological study expands on the limited knowledge of VOCs as infochemicals emitted from oak trees threatened by oak decline in relation to beetle-vectored ophiostomatoid fungi. It opens new avenues of research to clarify mutualistic or pathogenic aspects of these complex symbiotic interactions and develop new control strategies for P. cylindrus including its mycobiota."],["dc.description.abstract","In Portugal, fungal symbionts of the ambrosia beetle Platypus cylindrus affect tree vigor of cork oak (Quercus suber) and are linked with the cork oak decline process. Fungal symbionts play crucial roles in bark and ambrosia beetles life history and recent work indicates complex interactions on the fungal and plant metabolic level. Colonized trees may respond with an array of currently unknown volatile metabolites being indicative of such interactions, acting as infochemicals with their environment. In this study, we examined volatile organic compounds (VOCs) of cork oak seedlings wound-inoculated with strains of three fungal associates of P. cylindrus (Raffaelea montetyi, R. quercina and Ceratocystiopsis sp. nov.) over a 45-day period by means of thermodesorption GC/MS techniques. Fungal strains induced largely quantitative but species-specific changes among the 58 VOCs characterized. Overall, monoterpenes – the major volatiles of cork oak foliage, were significantly reduced, possibly a result of fungal biotransformation. Acetophenone, sulcatone, nonanal – volatiles known for mediating ambrosia beetle behavior, increased in response to fungal inoculation. Qualitative VOC profiles of excised tissue of wood lesions (21 VOCs) and pure fungal cultures (60 VOC) showed little overlap with seedling VOCs, indicating their plant derived but fungal induced origin. This chemoecological study expands on the limited knowledge of VOCs as infochemicals emitted from oak trees threatened by oak decline in relation to beetle-vectored ophiostomatoid fungi. It opens new avenues of research to clarify mutualistic or pathogenic aspects of these complex symbiotic interactions and develop new control strategies for P. cylindrus including its mycobiota."],["dc.identifier.doi","10.1094/PHYTO-08-21-0345-R"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107294"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","1943-7684"],["dc.relation.issn","0031-949X"],["dc.title","Symbiotic fungi of an ambrosia beetle alter the volatile bouquet of cork oak seedlings"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","271"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Chemoecology"],["dc.bibliographiccitation.lastpage","283"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Stoetefeld, Laura"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Schuetz, Stefan"],["dc.contributor.author","Rohlfs, Marko"],["dc.date.accessioned","2018-11-07T09:51:22Z"],["dc.date.available","2018-11-07T09:51:22Z"],["dc.date.issued","2015"],["dc.description.abstract","In analogy to herbivores, fungivorous animals may find suitable host fungi using fungal volatiles as infochemicals and to distinguish between fungi of varying suitability. This study tests the influence of volatiles emitted by micro-fungi, yeast and mould, on the foraging behaviour of facultative fungivorous Drosophila melanogaster larvae. We hypothesised that establishing or avoiding contact with edible yeast (host fungus) and inedible, toxic mould (non-host fungus) is regulated by fungus-specific variation in volatile production. In particular, we expected the non-host fungus to produce specific volatiles that repel fly larvae and thus contribute to signal inedibility. By quantifying innate variation in arrival of individual D. melanogaster larvae at colonies of the mutualist yeast Candida californica or of the antagonistic mould Penicillium expansum, we found the yeast to attract more rapidly a larger number of larvae than the mould did. The developmental stage (young, vegetative vs. old, sporulating) of P. expansum did not affect arrival of larvae at fungal colonies. We used gas chromatography coupled with mass spectrometry (GC-MS) to identify the composition of fungal volatiles. Four compounds appeared to be yeast-specific, twenty to be mould-specific volatiles. Eight volatiles were consistently produced by both young and old P. expansum. Two compounds, 3-methyl-1-butanol and 2-methyl-1-propanol, were released by P. expansum (young and old) as well as C. californica. Time-dependent behavioural response profiles of similar to 750 D. melanogaster larvae revealed innate attraction to three alcohols produced by yeast and/or moulds and to two yeast-specific organic acids. We found no indication of a repellent effect of mould-specific compounds, including terpenoids like geosmin known to elicit strong avoidance behaviour of adult D. melanogaster in response to harmful microbes. Also, synthetic mould and yeast-specific blends of attractive compounds were equally attractive to the larvae. With respect to the species combinations investigated in this study, we hypothesize that qualitative differences in fungal volatile profiles are of minor relevance in how Drosophila larvae locate and probably discriminate between fungi of varying suitability."],["dc.description.sponsorship","DFG (German Research Foundation) [RO3523/3-1, RO3523/3-2]"],["dc.identifier.doi","10.1007/s00049-015-0197-2"],["dc.identifier.isi","000360846200005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35897"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Basel"],["dc.relation.issn","1423-0445"],["dc.relation.issn","0937-7409"],["dc.title","Volatile-mediated location of mutualist host and toxic non-host microfungi by Drosophila larvae"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4328"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Ecology and Evolution"],["dc.bibliographiccitation.lastpage","4339"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Caballero Ortiz, Silvia"],["dc.contributor.author","Trienens, Monika"],["dc.contributor.author","Pfohl, Katharina"],["dc.contributor.author","Karlovsky, Petr"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Rohlfs, Marko"],["dc.date.accessioned","2021-06-01T10:50:07Z"],["dc.date.available","2021-06-01T10:50:07Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/ece3.3978"],["dc.identifier.issn","2045-7758"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86536"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.issn","2045-7758"],["dc.title","Phenotypic responses to microbial volatiles render a mold fungus more susceptible to insect damage"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","181"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Chemoecology"],["dc.bibliographiccitation.lastpage","190"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","von Fragstein, Maximilian"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Schütz, Stefan"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:53:57Z"],["dc.date.available","2017-09-07T11:53:57Z"],["dc.date.issued","2013"],["dc.identifier.doi","10.1007/s00049-013-0133-2"],["dc.identifier.gro","3150024"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6746"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","0937-7409"],["dc.title","Weak defence in a tritrophic system: olfactory response to salicylaldehyde reflects prey specialization of potter wasps"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","209"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Journal of Chromatography A"],["dc.bibliographiccitation.lastpage","216"],["dc.bibliographiccitation.volume","1056"],["dc.contributor.author","Weissbecker, Bernhard"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Schutz, S."],["dc.date.accessioned","2018-11-07T10:43:58Z"],["dc.date.available","2018-11-07T10:43:58Z"],["dc.date.issued","2004"],["dc.description.abstract","A gas chromatography-mass spectrometry-electroantennographic detection (GC-MS/EAD) setup has been designed by adapting a commercially available \"Olfactory Detector Port\" to the use with an insect antenna. Measurements were performed with antennae of the old house borer Hylotrupes bajulus, a widespread insect pest of coniferous timbers. Headspace volatiles from timber of Pinus sylvestris were collected and analysed by GC-MS. About 30 compounds were identified in the Kovacs range from 500 to 1200, especially terpenoids and aliphatic alcohols and aldehydes. The antennae of H. bajulus responded to nearly half of the detected volatiles with a peculiar sensitivity for alpha-pinene among the terpenes and for hexanal among the aldehydes. (C) 2004 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.chroma.2004.06.120"],["dc.identifier.isi","000225143800028"],["dc.identifier.pmid","15595552"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47170"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","8th International Symposium on Hyphenated Techniques in Chromatography and Hyphenated Chromatographic Analyzers (HTC-8)"],["dc.relation.eventlocation","Bruges, BELGIUM"],["dc.relation.issn","0021-9673"],["dc.title","Gas chromatography with mass spectrometric and electroantennographic detection: analysis of wood odorants by direct coupling of insect olfaction and mass spectrometry"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","477"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Applied Entomology"],["dc.bibliographiccitation.lastpage","486"],["dc.bibliographiccitation.volume","141"],["dc.contributor.author","Balakrishnan, K."],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Weissbecker, Bernhard"],["dc.contributor.author","Schuetz, Stefan"],["dc.date.accessioned","2018-11-07T10:22:24Z"],["dc.date.available","2018-11-07T10:22:24Z"],["dc.date.issued","2017"],["dc.description.abstract","The red flour beetle Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) is the most encountered and destructive stored product insect pest of cereal grains and seeds. Although this beetle has been used as a model organism for many decades, there is no systematic knowledge about antennal detection of host and non-host volatiles. Electroantennogram responses to 94 selected volatile organic compounds including alkanes, alkenes, alcohols, aldehydes, ketones, carboxylic acids, esters, terpenoids and aromatic compounds were recorded from both sexes of T.castaneum. Overall, female and male T.castaneum exhibited similar electroantennography (EAG) responses. Compounds eliciting the strongest EAG responses within compound groups of chemical similarity were undecane, 1-hexen-3-ol, octanal, 2-heptanone, hexanoic acid and ethyl hexanoate. Comparison of vapour pressure and EAG amplitudes within homologous series of compounds revealed responses to undecane, octadecane, octanal, nonanal, 2-heptanone, hexanoic acid and octanoic acid as outstanding. Given that systematic EAG screenings have not been conducted before, these are the best candidates for evaluation in future behavioural studies to unravel their potential for application in integrated pest management strategies of T.castaneum."],["dc.identifier.doi","10.1111/jen.12366"],["dc.identifier.isi","000402677200007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42265"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Wiley"],["dc.relation.issn","1439-0418"],["dc.relation.issn","0931-2048"],["dc.title","Electroantennographic responses of red flour beetle Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) to volatile organic compounds"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","28"],["dc.bibliographiccitation.journal","Fungal Ecology"],["dc.bibliographiccitation.lastpage","36"],["dc.bibliographiccitation.volume","38"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Rohlfs, Marko"],["dc.date.accessioned","2020-12-10T14:24:12Z"],["dc.date.available","2020-12-10T14:24:12Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.funeco.2018.09.005"],["dc.identifier.issn","1754-5048"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72180"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Volatile and non-volatile fungal oxylipins in fungus-invertebrate interactions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","57"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Chemoecology"],["dc.bibliographiccitation.lastpage","66"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Holighaus, Gerrit"],["dc.contributor.author","Weissbecker, Bernhard"],["dc.contributor.author","von Fragstein, Maximilian"],["dc.contributor.author","Schuetz, Stefan"],["dc.date.accessioned","2018-11-07T09:42:13Z"],["dc.date.available","2018-11-07T09:42:13Z"],["dc.date.issued","2014"],["dc.description.abstract","An enormous variety of volatile substances are released in distinctive blends by fungal substrates that should be recognisable for fungivores. Certain compounds dominate in most of the fungal species. Fungal oxylipins as the eight-carbon volatiles are the most prominent. This raises the question whether such are specific enough to qualify as appropriate host cues for a fungivore. We could demonstrate differentiated responses of the fungivorous beetle Bolitophagus reticulatus to eight-carbon volatiles: Nine eight-carbon volatiles were identified with GC-MS from its host fungus Fomes fomentarius. 1-Octen-3-ol, 3-octanone and 3-octanol induced contrasting behaviour of beetles in olfactometer bioassays. Electroantennographic experiments investigating the beetle olfactory sense revealed distinguishable antennal responses. Moreover, their individual release from F. fomentarius fruiting bodies changes not only considerably, but also independently over successive stages of beetle colonisation. Concentrations of attractive and repellent eight-carbon volatiles correlate to frequency of beetles in the field and further substantiate their relevance as host cues. Our results show that a specialist fungivore is able to differentiate the most common eight-carbon volatiles of fungi to assess host quality. Key roles and marked similarities of fungal to plant oxylipins suggest a comparable importance of eight-carbon volatiles to fungivores as green leaf volatiles have to herbivores."],["dc.identifier.doi","10.1007/s00049-014-0151-8"],["dc.identifier.isi","000332758600003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33907"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Basel"],["dc.relation.issn","1423-0445"],["dc.relation.issn","0937-7409"],["dc.title","Ubiquitous eight-carbon volatiles of fungi are infochemicals for a specialist fungivore"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]