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Titolo:
Protein synthesis is a required process for the optic lobe circadian clockin the cricket Gryllus bimaculatus
Autore:
Tomioka, K;
Indirizzi:
Yamaguchi Univ, Fac Sci, Dept Phys Biol & Informat, Yamaguchi 7538512, Japan Yamaguchi Univ Yamaguchi Japan 7538512 nformat, Yamaguchi 7538512, Japan
Titolo Testata:
JOURNAL OF INSECT PHYSIOLOGY
fascicolo: 3, volume: 46, anno: 2000,
pagine: 281 - 287
SICI:
0022-1910(200003)46:3<281:PSIARP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOCOMOTOR-ACTIVITY; NEURAL ACTIVITY; RHYTHM; PERIOD; PACEMAKER; PHASE; CYCLOHEXIMIDE; MECHANISMS; TIMELESS; LIGHT;
Keywords:
circadian clock; crickets; optic lobe; protein synthesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Tomioka, K Yamaguchi Univ, Fac Sci, Dept Phys Biol & Informat, Yamaguchi 7538512, Japan Yamaguchi Univ Yamaguchi Japan 7538512 maguchi 7538512, Japan
Citazione:
K. Tomioka, "Protein synthesis is a required process for the optic lobe circadian clockin the cricket Gryllus bimaculatus", J INSECT PH, 46(3), 2000, pp. 281-287

Abstract

The effects of a translation inhibitor, cycloheximide (CHX), on the circadian neuronal activity rhythm of the optic lamina-medulla compound eye complex cultured in vitro were investigated in the cricket Gryllus bimaculatus. When the complex was treated with 10(-5) M CHX for 6 h, the rhythm exhibited a marked phase shift. The magnitude and direction of the phase shift weredependent on the phase at which the complex was treated with CHX; phase delays occurred during the late subjective day to early subjective night, whereas phase advances occurred around the late subjective night. Continuous application of CHX abolished circadian rhythms of both the spontaneous neuronal activity and the visually evoked response. However, it abolished neither the spontaneous activity nor the visually evoked response. As washed withfresh medium after CHX treatment, the rhythm soon reappeared and the subsequent phase was clearly correlated to the termination time of the treatment. These results suggest that protein synthesis is also involved in the cricket optic lobe circadian clock, and that the clock-related protein synthesis may be active during the late subjective day to subjective night. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 21:07:28