Effect of Norharmane in vitro on Juvenile Hormone Epoxide Hydrolase Activity in the Lower Termite, Reticulitermes speratus

The aromatic β-carboline norharmane was determined in workers, nymphs, and ergatoids of Reticulitermes speratus (Kolbe) (Isoptera: Rhinotermitidae) by gas chromatography/mass spectrometry. Norharmane levels in workers, nymphs, and ergatoids collected in May (∼4.3 ng/termite) were higher than those i...

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Detalles Bibliográficos
Autores principales: Itakura, Shuji, Kawabata, Satoshi, Tanaka, Hiromi, Enoki, Akio
Formato: Texto
Lenguaje:English
Publicado: University of Wisconsin Library 2008
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3061585/
https://www.ncbi.nlm.nih.gov/pubmed/20345286
http://dx.doi.org/10.1673/031.008.1301
Descripción
Sumario:The aromatic β-carboline norharmane was determined in workers, nymphs, and ergatoids of Reticulitermes speratus (Kolbe) (Isoptera: Rhinotermitidae) by gas chromatography/mass spectrometry. Norharmane levels in workers, nymphs, and ergatoids collected in May (∼4.3 ng/termite) were higher than those in November (∼0.2 ng/termite). Fluorescence of norharmane was observed in histological sections in whole animals and in the fat body. Norharmane, at a final concentration of 1 mM, stimulated juvenile hormone epoxide hydrolase (JHEH) activity of enzyme extract from ergatoids, but inhibited JHEH activity at higher concentrations. The elevated JHEH activity stimulated by norharmane should accelerate juvenile hormone metabolism in R. speratus.

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