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A Behavioral Assay for Mechanosensation of MARCM-based Clones in Drosophila melanogaster
Published on: December 30, 2015
NompC TRP channel is essential for Drosophila sound receptor function
Thomas Effertz1, Robert Wiek, Martin C Göpfert
1Department of Cellular Neurobiology, University of Göttingen, Max Planck Institute for Experimental Medicine, Hermann-Rein-Strasse 3, 37075 Göttingen, Germany.
Current Biology : CB
|April 5, 2011
Summary
The NompC TRPN1 channel is crucial for Drosophila hearing. Sound receptor cells require NompC for detecting and amplifying mechanical signals, confirming its role in fly auditory transduction.
Area of Science:
- Neuroscience
- Sensory Biology
- Molecular Biology
Background:
- The NompC TRPN1 channel's role in Drosophila hearing has been debated.
- Remnant sound-evoked nerve potentials in nompC null mutants challenge its function.
Purpose of the Study:
- To investigate the essentiality of NompC for Drosophila sound receptor function.
- To identify the source of remnant sound-evoked nerve potentials in nompC mutants.
Main Methods:
- Ablation of Drosophila sound receptors.
- Genetic mutation of nompC.
- Analysis of sound-evoked nerve responses.
- Calcium imaging of receptor cell activity.
Main Results:
- Ablating sound receptors reduced nerve response amplitude and sensitivity.
- nompC mutations mimicked these effects, abolishing mechanical amplification.
- Calcium imaging revealed remnant potentials originated from gravity/wind receptors, not sound receptors.
- nompC mutant sound receptors failed to respond to sound.
Conclusions:
- NompC is essential for Drosophila sound receptor function, including mechanical signal detection and amplification.
- Gravity/wind receptors contribute to remnant nerve potentials in nompC mutants.
- This study revives the hypothesis that NompC is the fly's auditory transducer.
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