Identification of tobacco hornworm antibiosis factor from cuticulae of repandae section of Nicotiana species

Cuticular components of the green leaves of the Repandae section of the Nicotiana species contain compounds that have been shown to be toxic to larvae of the tobacco hornworm larvae, Manduca sexta . The surface constituents of leaves of greenhouse-grown N. repanda, N. stocktonii , and N. nesophila w...

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Bibliographic Details
Published in:Journal of chemical ecology 1988-06, Vol.14 (6), p.1485-1494
Main Authors: Severson, R.F. (Tobacco and Quality Safety Research Unit, ARS, USDA, Athens, GA), Huesing, J.E, Jones, D, Arrendale, R.F, Sisson, V.A
Format: Article
Language:English
Subjects:
ALCALOIDE
ALCALOIDES
ALKALOIDS
ANALISIS QUIMICO
ANALYSE CHIMIQUE
Animal and plant ecology
Animal, plant and microbial ecology
Animals
ANTIFEEDANTS
Autoecology
BIOCHEMISTRY
BIOCHIMIE
Biological and medical sciences
BIOQUIMICA
CHEMICAL ANALYSIS
CUTICLE
CUTICULA
CUTICULE
ESPECE
ESPECIES
FEUILLE
Fundamental and applied biological sciences. Psychology
General aspects
HOJAS
INHIBIDORES DEL APETITO
LARVAE
LARVAS
LARVE
LEAVES
MANDUCA
MANDUCA SEXTA
NICOTIANA
nicotiana nesophila
nicotiana repanda
nicotiana stocktonii
Nicotiana tabacum
NICOTINA
NICOTINE
PHAGOREPULSIF
Protozoa. Invertebrata
SPECIES
Sphingidae
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Summary:Cuticular components of the green leaves of the Repandae section of the Nicotiana species contain compounds that have been shown to be toxic to larvae of the tobacco hornworm larvae, Manduca sexta . The surface constituents of leaves of greenhouse-grown N. repanda, N. stocktonii , and N. nesophila were extracted to isolate the active compounds. The major component was identified as N'-(3-hydroxy-12-methyltridecanoyl)nornicotine. A number of minor 3-hydroxyacylnornicotines, with the acyl group containing C sub(13)-C sub(15), were also identified. The HOAcylNN mixture in ethanol was topically applied to first-instar tobacco hornworm larvae at rates of 10, 50, 100, and 200 mu g. Mortalities after 48 hr were 33, 44, 78, and 100% respectively.
ISSN:0098-0331
1573-1561
DOI:10.1007/BF01012420