Balakrishnan, Karthi

[["dc.bibliographiccitation.firstpage","1502"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Biomolecules"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Montino, Alice"],["dc.contributor.author","Balakrishnan, Karthi"],["dc.contributor.author","Dippel, Stefan"],["dc.contributor.author","Trebels, Björn"],["dc.contributor.author","Neumann, Piotr"],["dc.contributor.author","Wimmer, Ernst A."],["dc.date.accessioned","2021-12-01T09:22:46Z"],["dc.date.available","2021-12-01T09:22:46Z"],["dc.date.issued","2021"],["dc.description.abstract","Olfaction is crucial for insects to find food sources, mates, and oviposition sites. One of the initial steps in olfaction is facilitated by odorant-binding proteins (OBPs) that translocate hydrophobic odorants through the aqueous olfactory sensilla lymph to the odorant receptor complexes embedded in the dendritic membrane of olfactory sensory neurons. The Tribolium castaneum (Coleoptera, Tenebrionidae) OBPs encoded by the gene pair TcasOBP9A and TcasOBP9B represent the closest homologs to the well-studied Drosophila melanogaster OBP Lush (DmelOBP76a), which mediates pheromone reception. By an electroantennographic analysis, we can show that these two OBPs are not pheromone-specific but rather enhance the detection of a broad spectrum of organic volatiles. Both OBPs are expressed in the antenna but in a mutually exclusive pattern, despite their homology and gene pair character by chromosomal location. A phylogenetic analysis indicates that this gene pair arose at the base of the Cucujiformia, which dates the gene duplication event to about 200 Mio years ago. Therefore, this gene pair is not the result of a recent gene duplication event and the high sequence conservation in spite of their expression in different sensilla is potentially the result of a common function as co-OBPs."],["dc.description.abstract","Olfaction is crucial for insects to find food sources, mates, and oviposition sites. One of the initial steps in olfaction is facilitated by odorant-binding proteins (OBPs) that translocate hydrophobic odorants through the aqueous olfactory sensilla lymph to the odorant receptor complexes embedded in the dendritic membrane of olfactory sensory neurons. The Tribolium castaneum (Coleoptera, Tenebrionidae) OBPs encoded by the gene pair TcasOBP9A and TcasOBP9B represent the closest homologs to the well-studied Drosophila melanogaster OBP Lush (DmelOBP76a), which mediates pheromone reception. By an electroantennographic analysis, we can show that these two OBPs are not pheromone-specific but rather enhance the detection of a broad spectrum of organic volatiles. Both OBPs are expressed in the antenna but in a mutually exclusive pattern, despite their homology and gene pair character by chromosomal location. A phylogenetic analysis indicates that this gene pair arose at the base of the Cucujiformia, which dates the gene duplication event to about 200 Mio years ago. Therefore, this gene pair is not the result of a recent gene duplication event and the high sequence conservation in spite of their expression in different sensilla is potentially the result of a common function as co-OBPs."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.3390/biom11101502"],["dc.identifier.pii","biom11101502"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94479"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","2218-273X"],["dc.relation.orgunit","Johann-Friedrich-Blumenbach-Institut für Zoologie und Anthropologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Mutually Exclusive Expression of Closely Related Odorant-Binding Proteins 9A and 9B in the Antenna of the Red Flour Beetle Tribolium castaneum"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Trebels, Björn"],["dc.contributor.author","Dippel, Stefan"],["dc.contributor.author","Schaaf, Magdalina"],["dc.contributor.author","Balakrishnan, Karthi"],["dc.contributor.author","Wimmer, Ernst A."],["dc.contributor.author","Schachtner, Joachim"],["dc.date.accessioned","2021-04-14T08:27:36Z"],["dc.date.available","2021-04-14T08:27:36Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1038/s41598-020-57639-x"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82343"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2045-2322"],["dc.title","Adult neurogenesis in the mushroom bodies of red flour beetles (Tribolium castaneum, Herbst) is influenced by the olfactory environment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e0190067"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Ren, Li li"],["dc.contributor.author","Balakrishnan, Karthi"],["dc.contributor.author","Luo, You qing"],["dc.contributor.author","Schütz, Stefan"],["dc.contributor.editor","Hull, J Joe"],["dc.date.accessioned","2020-12-10T18:42:05Z"],["dc.date.available","2020-12-10T18:42:05Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1371/journal.pone.0190067"],["dc.identifier.eissn","1932-6203"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15674"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77799"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Forstwissenschaften und Waldökologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","EAG response and behavioral orientation of Dastarcus helophoroides (Fairmaire) (Coleoptera: Bothrideridae) to synthetic host-associated volatiles"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["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"]]