Antifeedant and ovicidal activities of a new cassane and other compounds from Caesalpinia welwitschiana Oliv. and Caesalpinia bonduc L. against Tuta absoluta (Lepidoptera: Gelechiidae)

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dc.contributor.authorFlaure, Rosette Ehawa Essounga
dc.contributor.authorMba’ning, Brice Mitterant
dc.contributor.authorTcho, Alain Tadjong
dc.contributor.authorChhabra, Sumesh Chander
dc.contributor.authorMohamed, Samira Abuelgasim
dc.contributor.authorLenta, Bruno Ndjakou
dc.contributor.authorNgouela, Silvere Augustin
dc.contributor.authorTsamo, Etienne
dc.contributor.authorHassanali, Ahmed
dc.contributor.authorCox, Russell John
dc.date.accessioned2020-10-05T10:22:37Z
dc.date.available2020-10-05T10:22:37Z
dc.date.issued2020
dc.descriptionA research article published in Natural Product Research Formerly Natural Product Lettersen_US
dc.description.abstractMethanolic extracts of liana of Caesalpinia welwitschiana and leaves of C. bonduc were found to possess moderate antifeedant and ovicidal activities against Tuta absoluta. Bioassay-guided isolation of constituents from the most active fraction of C. welwitschiana led to the identification of four known compounds [isobonducellin 1a and bonducellin 1 b, intricatinol 2, (-)-epigallocatechin-3-O-gallate 4] and one new constituent [welwitschianic acid 3]. The most active fraction of C. bonduc afforded two known constituents neocaesalpin L 5 and neocaesalpin A 6. The isolated structures were elucidated on the basis of their MS, UV, IR and 1 & 2 D NMR spectra and by comparison with literature data. Compounds 2, 4-6 were showed antifeedant and ovicidal properties against T. absoluta, some comparable to that of azadirachtin at 50, 100 and 200 ng/ml. Overall, the present study, conclude that the two species of the plant could be a promising source of ecofriendly botanical constituents.en_US
dc.description.sponsorshipWe gratefully acknowledge the financial support of the German Academic Exchange Service InRegion scholarship for funding FREE. SAM thanks the Federal Ministry of Cooperation and Development (BMZ), Germany for providing the financial support through ICIPE Tuta absoluta IPM project (N: 12.1433.7-001.00). RJC acknowledges the DFG for funding for LCMS instrumentation (INST 187/621-1).en_US
dc.identifier.citationFlaure Rosette Ehawa Essoung , Brice Mitterant Mba’ning , Alain Tadjong Tcho , Sumesh Chander Chhabra , Samira Abuelgasim Mohamed , Bruno Ndjakou Lenta , Silvere Augustin Ngouela , Etienne Tsamo , Ahmed Hassanali & Russell John Cox (2020): Antifeedant and ovicidal activities of a new cassane and other compounds from Caesalpinia welwitschiana Oliv. and Caesalpinia bonduc L. against Tuta absoluta (Lepidoptera: Gelechiidae), Natural Product Research, DOI: 10.1080/14786419.2020.1825424en_US
dc.identifier.issn1478-6427
dc.identifier.urihttps://www.tandfonline.com/doi/pdf/10.1080/14786419.2020.1825424
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/20520
dc.language.isoenen_US
dc.publisherTaylor & Francis Groupen_US
dc.subjectCassanesen_US
dc.subjectflavonoidesen_US
dc.subjectTuta absolutaen_US
dc.subjectAntifeedanten_US
dc.subjectOvipositionen_US
dc.subjectCaesalpinia bonducen_US
dc.subjectCaesalpinia welwitschianaen_US
dc.titleAntifeedant and ovicidal activities of a new cassane and other compounds from Caesalpinia welwitschiana Oliv. and Caesalpinia bonduc L. against Tuta absoluta (Lepidoptera: Gelechiidae)en_US
dc.typeArticleen_US
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