Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Lathika, C.C.; Sujatha, G.B.; Sabulal, N.; Johnson, A.J.; Viswanathan, G.; Remadevi, R.K.S.; Shereefa, L.A.; Baby, S. Title A name given to the resource Pollination versus carnivory: functional distribution of naphthoquinones in Nepenthes khasiana Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Plant Biology;Volume;28;Issue;2;pp.461-467 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1111/plb.70146" target="_blank" rel="noreferrer noopener">https://doi.org/10.1111/plb.70146</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105026886695?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105026886695?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Lathika C.C., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India, Department of Botany, Christian College, Kerala, Kattakada, Thiruvananthapuram, India, University of Kerala, Kerala, Kariavattom, Thiruvananthapuram, India; Sujatha G.B., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India, University of Kerala, Kerala, Kariavattom, Thiruvananthapuram, India; Sabulal N., Department of Chemistry, Christ University, Karnataka, Bengaluru, India; Johnson A.J., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India; Viswanathan G., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India; Remadevi R.K.S., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India; Shereefa L.A., Department of Botany, Christian College, Kerala, Kattakada, Thiruvananthapuram, India; Baby S., Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Kerala, Pacha-Palode, Thiruvananthapuram, India Description An account of the resource Nepenthes, a major genus of carnivorous plants, secrete floral and extrafloral nectars (FN and EFN) in their flowers and pitchers, respectively. Recently we demonstrated Nepenthes khasiana EFN as a sugar mix with minimal nitrogenous metabolites and vitamin C. N. khasiana EFN showed insect toxicity due to its strong acetylcholinesterase (AChE) inhibition, and the active principle has been characterized as the naphthoquinone derivative, (+)-isoshinanolone. These findings prompted us to study the chemical composition and toxicity of N. khasiana FN. N. khasiana FN was analyzed for its sugars, amino acids, proteins, fatty acids and vitamin C by HPTLC-densitometry, UFLC, GCMS and biochemical assays. C:N ratio and naphthoquinones were analyzed by CHNS analyzer, headspace-GCMS, and GC-FID, respectively. Toxicity of FN and the naphthoquinone droserone, found in its pitcher fluid, was evaluated using the AChE inhibition assay. N. khasiana FN showed a similar chemical pattern as its EFN, viz., sugar (Glc-Fru-Suc)-mix with minimal amino acids, vitamin C, and moderate protein and fatty acid contents. It showed fairly high C:N ratio. The naphthoquinone, plumbagin, was the major volatile constituent in N. khasiana flowers. Crucially, the AChE inhibitors, (+)-isoshinanolone and plumbagin, were absent in N. khasiana FN, which showed no AChE inhibition. Droserone, however, exhibited strong AChE inhibitory activity. The chemical profiles of EFN and FN reflect a nitrogen-limited metabolism in N. khasiana. Notably, the functional allocation of neurotoxic naphthoquinones abundant in EFN, absent in FN, and present in the pitcher fluid reflects an adaptive strategy that optimizes both nutritional gain through prey capture and reproductive success through pollination. 2026 Wiley-VCH GmbH. Published by John Wiley &amp; Sons Ltd. Subject The topic of the resource Floral nectar; naphthoquinone distribution; nectar chemistry; Nepenthes; pollination; pollinatorprey conflict; toxicity Publisher An entity responsible for making the resource available John Wiley and Sons Inc Relation A related resource ISSN: 14358603; CODEN: PBIOF Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource All Open Access; Bronze Open Access Format The file format, physical medium, or dimensions of the resource online