Cargando…
Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless
BACKGROUND: It is reported that the circadian rhythms of female mating activity differ among Drosophila species and are controlled by an endogenous circadian clock. Here, we found that the mating rhythm of D. ananassae differed from that of D. melanogaster. Moreover, to evaluate the effect of clock...
Autores principales: | , , |
---|---|
Formato: | Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2006
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1450320/ https://www.ncbi.nlm.nih.gov/pubmed/16522214 http://dx.doi.org/10.1186/1740-3391-4-4 |
_version_ | 1782127397324193792 |
---|---|
author | Nishinokubi, Izumi Shimoda, Masami Ishida, Norio |
author_facet | Nishinokubi, Izumi Shimoda, Masami Ishida, Norio |
author_sort | Nishinokubi, Izumi |
collection | PubMed |
description | BACKGROUND: It is reported that the circadian rhythms of female mating activity differ among Drosophila species and are controlled by an endogenous circadian clock. Here, we found that the mating rhythm of D. ananassae differed from that of D. melanogaster. Moreover, to evaluate the effect of clock gene products on mating activities, we examined the mating activity of D. melanogaster timeless (tim(01)) transgenic fly harboring heat-shock promotor driven-D. ananassae timeless (tim) gene (hs-AT tim(01)). METHODS: Flies were maintained under light/dark (LD) cycles for several days and then they were transferred to constant dark (DD) conditions at 25°C. Transformant flies were heat-shocked for 30 min (PZT 10.5–11.0 or PZT 22.5–23.0; PZT means Projected Zeitgeber Time) at 37°C every day. Daily expressions of D. ananassae TIMELESS (TIM) protein in transgenic flies were measured by western blotting. To examine whether the timing of D. ananassae TIM protein induction by heat shock can change the patterns of the behavior activities of D. melanogaster tim(01 )flies, we measured locomotor and mating activity rhythms under DD at 25°C ± 0.5°C except when heat shock was applied. RESULTS: Heat shock applied at PZT 10.5–11.0 and at PZT 22.5–23.0 induced high TIM levels during subjective night and day, respectively, in hs-AT tim(01 )flies. The locomotor rhythm of these flies was changed from diurnal to nocturnal by the timing of D. ananassae TIM induction. However, the mating rhythm of these flies could not be entrained by the timing of D. ananassae TIM induction. CONCLUSION: The pattern of mating activity rhythms of D. ananassae and of D. melanogaster differed. The mating activity rhythms of D. melanogaster tim(01 )flies harboring hs-AT tim appeared after heat-shock but the pattern and phase differed from those of wild-type D. ananassae and D. melanogaster. Moreover, the mating rhythm of these flies could not be entrained by the timing of D. ananassae TIM induction although the locomotor rhythm of hs-AT tim(01 )was changed from diurnal to nocturnal according to the timing of D. ananassae TIM induction. These data suggest that species-specific mating activities require output pathways different from those responsible for locomotor rhythms. |
format | Text |
id | pubmed-1450320 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2006 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-14503202006-04-29 Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless Nishinokubi, Izumi Shimoda, Masami Ishida, Norio J Circadian Rhythms Research BACKGROUND: It is reported that the circadian rhythms of female mating activity differ among Drosophila species and are controlled by an endogenous circadian clock. Here, we found that the mating rhythm of D. ananassae differed from that of D. melanogaster. Moreover, to evaluate the effect of clock gene products on mating activities, we examined the mating activity of D. melanogaster timeless (tim(01)) transgenic fly harboring heat-shock promotor driven-D. ananassae timeless (tim) gene (hs-AT tim(01)). METHODS: Flies were maintained under light/dark (LD) cycles for several days and then they were transferred to constant dark (DD) conditions at 25°C. Transformant flies were heat-shocked for 30 min (PZT 10.5–11.0 or PZT 22.5–23.0; PZT means Projected Zeitgeber Time) at 37°C every day. Daily expressions of D. ananassae TIMELESS (TIM) protein in transgenic flies were measured by western blotting. To examine whether the timing of D. ananassae TIM protein induction by heat shock can change the patterns of the behavior activities of D. melanogaster tim(01 )flies, we measured locomotor and mating activity rhythms under DD at 25°C ± 0.5°C except when heat shock was applied. RESULTS: Heat shock applied at PZT 10.5–11.0 and at PZT 22.5–23.0 induced high TIM levels during subjective night and day, respectively, in hs-AT tim(01 )flies. The locomotor rhythm of these flies was changed from diurnal to nocturnal by the timing of D. ananassae TIM induction. However, the mating rhythm of these flies could not be entrained by the timing of D. ananassae TIM induction. CONCLUSION: The pattern of mating activity rhythms of D. ananassae and of D. melanogaster differed. The mating activity rhythms of D. melanogaster tim(01 )flies harboring hs-AT tim appeared after heat-shock but the pattern and phase differed from those of wild-type D. ananassae and D. melanogaster. Moreover, the mating rhythm of these flies could not be entrained by the timing of D. ananassae TIM induction although the locomotor rhythm of hs-AT tim(01 )was changed from diurnal to nocturnal according to the timing of D. ananassae TIM induction. These data suggest that species-specific mating activities require output pathways different from those responsible for locomotor rhythms. BioMed Central 2006-03-08 /pmc/articles/PMC1450320/ /pubmed/16522214 http://dx.doi.org/10.1186/1740-3391-4-4 Text en Copyright © 2006 Nishinokubi et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Nishinokubi, Izumi Shimoda, Masami Ishida, Norio Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title | Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title_full | Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title_fullStr | Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title_full_unstemmed | Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title_short | Mating rhythms of Drosophila: rescue of tim(01 )mutants by D. ananassae timeless |
title_sort | mating rhythms of drosophila: rescue of tim(01 )mutants by d. ananassae timeless |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1450320/ https://www.ncbi.nlm.nih.gov/pubmed/16522214 http://dx.doi.org/10.1186/1740-3391-4-4 |
work_keys_str_mv | AT nishinokubiizumi matingrhythmsofdrosophilarescueoftim01mutantsbydananassaetimeless AT shimodamasami matingrhythmsofdrosophilarescueoftim01mutantsbydananassaetimeless AT ishidanorio matingrhythmsofdrosophilarescueoftim01mutantsbydananassaetimeless |