Endocrine regulation of non-circadian behavior of circadian genes in insect gut
Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
23811190
DOI
10.1016/j.jinsphys.2013.06.004
PII: S0022-1910(13)00136-4
Knihovny.cz E-zdroje
- Klíčová slova
- Corpus allatum, Cryptochrome, Diapause, Endocrine glands, Par domain protein 1, Pars intercerebralis, Photoperiod,
- MeSH
- cirkadiánní rytmus MeSH
- corpora allata fyziologie MeSH
- gastrointestinální trakt metabolismus MeSH
- Heteroptera metabolismus MeSH
- hmyzí geny MeSH
- hmyzí proteiny genetika metabolismus MeSH
- kryptochromy genetika metabolismus MeSH
- ovarium fyziologie MeSH
- regulace genové exprese * MeSH
- zvířata MeSH
- Check Tag
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- hmyzí proteiny MeSH
- kryptochromy MeSH
The linden bug Pyrrhocoris apterus exhibits a robust diapause response to photoperiod. Photoperiod strongly affected basal levels of circadian gene transcripts in the gut, via the neuroendocrine system. Cryptochrome 2 (cry2) mRNA level was much higher in diapause promoting short days (SD) than in reproduction promoting long days (LD), while Par Domain Protein 1 (Pdp1) mRNA level was higher in LD than in SD. The effect of photoperiod on gene expression was mediated by the neurosecretory cells of the pars intercerebralis (PI) and the juvenile hormone (JH) producing corpus allatum (CA). In LD-females, CA ablation resulted in SD-like levels of gene transcripts, while PI ablation had little effect. Conversely, in SD-females, CA ablation had only a little effect, while PI ablation resulted in LD-like levels of gene transcripts. Thus, the CA is responsible for LD-like characteristics of gene expression in reproducing females and the PI is responsible for SD-like characteristics of gene expression in diapausing females. A simultaneous ablation of both PI and CA revealed two roles of PI in SD-females: (1) inhibition of CA, and (2) weak CA-independent stimulation of cry2 mRNA. Overall, our results indicate that peripheral circadian gene expression in the gut reflects the physiological state of females (with respect to diapause or reproduction) rather than the external light-dark cycle.
J Insect Physiol. 2013 Oct;59(10):1087 PubMed
Citace poskytuje Crossref.org
Light and Temperature Synchronizes Locomotor Activity in the Linden Bug, Pyrrhocoris apterus
