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Circadian rhythms in olfactory respo...

Krishnan, Balaji.

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Circadian rhythms in olfactory responses of Drosophila melanogaster.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Circadian rhythms in olfactory responses of Drosophila melanogaster./
作者:	Krishnan, Balaji.
面頁冊數:	180 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1113.
Contained By:	Dissertation Abstracts International64-03B.
Subject:	Biology, Entomology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3085610
ISBN:	0496334174

Circadian rhythms in olfactory responses of Drosophila melanogaster.
Krishnan, Balaji.

Circadian rhythms in olfactory responses of Drosophila melanogaster. - 180 p.

Source: Dissertation Abstracts International, Volume: 64-03, Section: B, page: 1113.

Thesis (Ph.D.)--University of Houston, 2003.

The wealth of classical and molecular genetics knowledge that Drosophila melanogaster provides has revealed information on the molecular oscillators that control activity rhythms in locomotion and eclosion. In this study, I have presented the first evidence of a physiological rhythm in this organism. The olfactory system is under the control of the circadian clock in Drosophila melanogaster. I have measured electrophysiological changes in the peripheral sensory organ, antenna that detects volatile air-borne odorants. The response changes as a function of circadian time. The rhythms require an oscillator different from lateral neurons (LNs are pacemaker neurons for locomotor activity rhythms). In addition, these studies show oscillator mechanisms in antennal neurons can generate EAG rhythms. Thus, an organization of independently self-sustained peripheral oscillators controlling physiological functions is seen in Drosophila melanogaster, in contrast to the hierarchical organization of master central clock and slave peripheral oscillators in mice circadian system. Cryptochrome gene function is implicated in circadian photoreception in Drosophila locomotor activity rhythms, but is intricately involved with core oscillators in antenna. Cryptochromes are known to be important for mice circadian mechanism. Thus, there are interesting parallels in circadian rhythms of peripheral oscillators in Drosophila and zebrafish, and similarities of core oscillator mechanism in Drosophila peripheral tissues and mice circadian system.

ISBN: 0496334174Subjects--Topical Terms:

1018619
Biology, Entomology.

Circadian rhythms in olfactory responses of Drosophila melanogaster.
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520 $a The wealth of classical and molecular genetics knowledge that Drosophila melanogaster provides has revealed information on the molecular oscillators that control activity rhythms in locomotion and eclosion. In this study, I have presented the first evidence of a physiological rhythm in this organism. The olfactory system is under the control of the circadian clock in Drosophila melanogaster. I have measured electrophysiological changes in the peripheral sensory organ, antenna that detects volatile air-borne odorants. The response changes as a function of circadian time. The rhythms require an oscillator different from lateral neurons (LNs are pacemaker neurons for locomotor activity rhythms). In addition, these studies show oscillator mechanisms in antennal neurons can generate EAG rhythms. Thus, an organization of independently self-sustained peripheral oscillators controlling physiological functions is seen in Drosophila melanogaster, in contrast to the hierarchical organization of master central clock and slave peripheral oscillators in mice circadian system. Cryptochrome gene function is implicated in circadian photoreception in Drosophila locomotor activity rhythms, but is intricately involved with core oscillators in antenna. Cryptochromes are known to be important for mice circadian mechanism. Thus, there are interesting parallels in circadian rhythms of peripheral oscillators in Drosophila and zebrafish, and similarities of core oscillator mechanism in Drosophila peripheral tissues and mice circadian system.
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