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Interaction of light regimes and circadian clocks modulate timing of pre-adult developmental events in Drosophila

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dc.contributor.author Yadav, Pankaj
dc.contributor.author Thandapani, Madhumohan
dc.contributor.author Sharma, Vijay Kumar
dc.date.accessioned 2017-02-16T11:37:42Z
dc.date.available 2017-02-16T11:37:42Z
dc.date.issued 2014
dc.identifier.citation Yadav, P; Thandapani, M; Sharma, VK, Interaction of light regimes and circadian clocks modulate timing of pre-adult developmental events in Drosophila. BMC Developmental Biology 2014, 14, 19 http://dx.doi.org/10.1186/1471-213X-14-19 en_US
dc.identifier.citation BMC Developmental Biology en_US
dc.identifier.citation 14 en_US
dc.identifier.issn 1471-213X
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2320
dc.description Open Access en_US
dc.description.abstract Background: Circadian clocks have been postulated to regulate development time in several species of insects including fruit flies Drosophila melanogaster. Previously we have reported that selection for faster pre-adult development reduces development time (by similar to 19 h or similar to 11%) and clock period (by similar to 0.5 h), suggesting a role of circadian clocks in the regulation of development time in D. melanogaster. We reasoned that these faster developing flies could serve as a model to study stage-specific interaction of circadian clocks and developmental events with the environmental light/dark (LD) conditions. We assayed the duration of three pre-adult stages in the faster developing (FD) and control (BD) populations under a variety of light regimes that are known to modulate circadian clocks and pre-adult development time of Drosophila to examine the role of circadian clocks in the timing of pre-adult developmental stages. Results: We find that the duration of pre-adult stages was shorter under constant light (LL) and short period light (L)/dark (D) cycles (L:D = 10:10 h; T20) compared to the standard 24 h day (L:D = 12:12 h; T24), long LD cycles (L: D = 14:14 h; T28) and constant darkness (DD). The difference in the duration of pre-adult stages between the FD and BD populations was significantly smaller under the three LD cycles and LL compared to DD, possibly due to the fact that clocks of both FD and BD flies are driven at the same pace in the three LD regimes owing to circadian entrainment, or are rendered dysfunctional under LL. Conclusions: These results suggest that interaction between light regimes and circadian clocks regulate the duration of pre-adult developmental stages in fruit flies D. melanogaster. en_US
dc.description.uri http://dx.doi.org/10.1186/1471-213X-14-19 en_US
dc.language.iso English en_US
dc.publisher Biomed Central Ltd en_US
dc.rights @Biomed Central Ltd, 2014 en_US
dc.subject Developmental Biology en_US
dc.subject Circadian Clocks en_US
dc.subject Faster Development en_US
dc.subject Light Regimes en_US
dc.subject Selection en_US
dc.subject Development Time en_US
dc.subject Pre-Adult Stages en_US
dc.subject Bactrocera-Cucurbitae Diptera en_US
dc.subject Endogenous Diurnal Rhythm en_US
dc.subject Manduca-Sexta L en_US
dc.subject Tobacco Hornworm en_US
dc.subject Photoperiodic Clock en_US
dc.subject Biological Clock en_US
dc.subject Melon Fly en_US
dc.subject Melanogaster en_US
dc.subject Selection en_US
dc.subject Pupation en_US
dc.title Interaction of light regimes and circadian clocks modulate timing of pre-adult developmental events in Drosophila en_US
dc.type Article en_US


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