Fragstein, Maximilian von

[["dc.bibliographiccitation.firstpage","707"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","European Journal of Forest Research"],["dc.bibliographiccitation.lastpage","716"],["dc.bibliographiccitation.volume","130"],["dc.contributor.author","Kleemann, Frauke"],["dc.contributor.author","Fragstein, Maximilian von"],["dc.contributor.author","Vornam, Barbara"],["dc.contributor.author","Müller, Annika"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Holzschuh, Andrea"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Finkeldey, Reiner"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2018-10-29T17:15:29Z"],["dc.date.available","2018-10-29T17:15:29Z"],["dc.date.issued","2011"],["dc.description.abstract","Knowledge on phenological, morphometric, and phytochemical variation of local progenies of European aspen (Populus tremula, L.) is limited. The goal of this study was to characterize variation in growth and ecologically important leaf properties in aspen full-sib families in relation to interacting organisms (mycorrhiza, endophytes, and insects) and to determine whether these interactions were affected by soil application of a systemic fungicide. In local progenies, within-family variation of neutral molecular genetic markers (nuclear microsatellites) was higher than between families. Significant variation in growth, production of phenolic defensive compounds and other phytochemical leaf traits was found between families. Phenolic compounds showed clear negative correlation with generalist herbivores, but did not result in negative trade-off with biomass production. Differences in mycorrhizal colonization were not found among full-sib families and application of a systemic fungicide suppressed neither mycorrhizal colonization nor infestation with insects. However, a strong suppression of endophytes occurred, whose long-term consequences may require attention when fungicides are used in agroforestry plantations."],["dc.identifier.doi","10.1007/s10342-010-0460-6"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7146"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16136"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Relating genetic variation of ecologically important tree traits to associated organisms in full-sib aspen families"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e72724"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Klatt, Björn K."],["dc.contributor.author","Burmeister, Carina"],["dc.contributor.author","Westphal, Catrin"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","von Fragstein, Maximilian"],["dc.date.accessioned","2017-09-07T11:50:45Z"],["dc.date.available","2017-09-07T11:50:45Z"],["dc.date.issued","2013"],["dc.description.abstract","Pollination contributes to an estimated one third of global food production, through both the improvement of the yield and the quality of crops. Volatile compounds emitted by crop flowers mediate plant-pollinator interactions, but differences between crop varieties are still little explored. We investigated whether the visitation of crop flowers is determined by variety-specific flower volatiles using strawberry varieties (Fragaria x ananassa Duchesne) and how this affects the pollination services of the wild bee Osmia bicornis L. Flower volatile compounds of three strawberry varieties were measured via headspace collection. Gas chromatography showed that the three strawberry varieties produced the same volatile compounds but with quantitative differences of the total amount of volatiles and between distinct compounds. Electroantennographic recordings showed that inexperienced females of Osmia bicornis had higher antennal responses to all volatile compounds than to controls of air and paraffin oil, however responses differed between compounds. The variety Sonata was found to emit a total higher level of volatiles and also higher levels of most of the compounds that evoked antennal responses compared with the other varieties Honeoye and Darselect. Sonata also received more flower visits from Osmia bicornis females under field conditions, compared with Honeoye. Our results suggest that differences in the emission of flower volatile compounds among strawberry varieties mediate their attractiveness to females of Osmia bicornis. Since quality and quantity of marketable fruits depend on optimal pollination, a better understanding of the role of flower volatiles in crop production is required and should be considered more closely in crop-variety breeding."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2013"],["dc.identifier.doi","10.1371/journal.pone.0072724"],["dc.identifier.gro","3149892"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9228"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6601"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Flower Volatiles, Crop Varieties and Bee Responses"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1433"],["dc.bibliographiccitation.issue","11-12"],["dc.bibliographiccitation.journal","Journal of Chemical Ecology"],["dc.bibliographiccitation.lastpage","1440"],["dc.bibliographiccitation.volume","39"],["dc.contributor.author","Tolasch, Till"],["dc.contributor.author","Koenig, Christian"],["dc.contributor.author","von Fragstein, Maximilian"],["dc.contributor.author","Steidle, Johannes L. M."],["dc.date.accessioned","2018-11-07T09:17:07Z"],["dc.date.available","2018-11-07T09:17:07Z"],["dc.date.issued","2013"],["dc.description.abstract","The click beetle Idolus picipennis represents the only species of its genus in Europe, where it is widely distributed but is rare and only occurs locally. In order to identify its sex pheromone we investigated gland extracts of females from populations in southern Germany. GC/MS analyses revealed two distinct types of gland compositions that correspond to slight but consistent morphological differences in the respective beetles. Extracts of one type contain four compounds, geranyl hexanoate (similar to 40 %), (Z,E)-farnesyl hexanoate (similar to 10 %), (E,E)-farnesyl hexanoate (similar to 40 %), and (E,E)-farnesyl octanoate (similar to 10 %), and this type belongs to the authentic I. picipennis (Bach 1852). Extracts of a second type contain neryl hexanoate (similar to 10 %) and neryl octanoate (similar to 90 %), and this type belongs to an Idolus species that apparently has been overlooked to date, presumably due to similarity with the authentic I. picipennis and insufficient material in collections. Synthetic blends of the identified compounds in their naturally-occurring ratios, as well as the main compounds alone, proved to be highly attractive to swarming males of the respective species in the field. A strong species-specific attraction also was observed in a locality where both species co-occur, thus confirming effective reproductive isolation. This study shows the potential of sex pheromones for monitoring rare and threatened insects as well as for detecting hitherto unknown cryptic species."],["dc.identifier.doi","10.1007/s10886-013-0360-6"],["dc.identifier.isi","000328202100010"],["dc.identifier.pmid","24197916"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28086"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1573-1561"],["dc.relation.issn","0098-0331"],["dc.title","Identification of the Sex Pheromone of Idolus picipennis (Bach, 1852) Revealed the Presence of a Cryptic Sibling Species"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["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","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"]]