Journal article
Isolation of cockroach Phe–Gly–Leu–amide allatostatins from the termite Reticulitermes flavipes and their effect on juvenile hormone synthesis
Journal of insect physiology, Vol.54(6), pp.939-948
06/01/2008
DOI: 10.1016/j.jinsphys.2008.01.013
PMID: 18387628
Abstract
Immunoreactivity to cockroach
Diploptera punctata allatostatin-7 (Dippu AST-7) has been demonstrated previously in axons innervating the corpora allata of the termite
Reticulitermes flavipes. This peptide and Dippu AST-11 inhibited juvenile hormone (JH) synthesis by corpora allata (CA) of brachypterous neotenic reproductives (secondary reproductives) of termites. The present study shows that
R. flavipes CA are also inhibited by Dippu AST-2, AST-5, AST-8, and AST-9 at approximately the same rank order of potency as demonstrated in
D. punctata. Another allatostatin from
Periplaneta americana (Peram AST-12) also inhibits JH synthesis by
R. flavipes CA. Sensitivity to the allatostatins is higher in glands with low rates of JH synthesis than in those with relatively high JH synthetic rates as has been demonstrated in CA from male and female secondary reproductives as well as in those from non-egg-laying and egg-laying females. The identical inhibitory effects of
R. flavipes brain extract on CA from both
D. punctata and
R. flavipes and the isolation and identification of five cockroach allatostatins (Dippu AST-1, AST-2, AST-5, AST-8, and Peram AST-12) from termite brain extract reflect the close relationship between cockroaches and termites.
Details
- Title: Subtitle
- Isolation of cockroach Phe–Gly–Leu–amide allatostatins from the termite Reticulitermes flavipes and their effect on juvenile hormone synthesis
- Creators
- K.J. Yagi - University of TorontoK.L. Elliott - University of IowaL. Teesch - High Resolution Mass Spectrometry Facility, University of Iowa, Iowa City, IA 52242, USAS.S. Tobe - University of TorontoB. Stay - Department of Biology, University of Iowa, Iowa City, IA 52242, USA
- Resource Type
- Journal article
- Publication Details
- Journal of insect physiology, Vol.54(6), pp.939-948
- DOI
- 10.1016/j.jinsphys.2008.01.013
- PMID
- 18387628
- NLM abbreviation
- J Insect Physiol
- ISSN
- 0022-1910
- eISSN
- 1879-1611
- Publisher
- Elsevier Ltd
- Language
- English
- Date published
- 06/01/2008
- Academic Unit
- Core Research Facilities; Biology; Medicine Administration
- Record Identifier
- 9984622751302771
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