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Serotonergic neuronal death and concomitant serotonin deficiency curb copulation ability of Drosophila platonic mutants.


ABSTRACT: Drosophila platonic (plt) males court females, but fail to copulate. Here we show that plt is an allele of scribbler (sbb), a BMP signalling component. sbb knockdown in larvae leads to the loss of approximately eight serotonergic neurons, which express the sex-determinant protein Doublesex (Dsx). Genetic deprivation of serotonin (5-HT) from dsx-expressing neurons results in copulation defects. Thus, sbb+ is developmentally required for the survival of a specific subset of dsx-expressing neurons, which support the normal execution of copulation in adults by providing 5-HT. Our study highlights the conserved involvement of serotonergic neurons in the control of copulatory mechanisms and the key role of BMP signalling in the formation of a sex-specific circuitry.

SUBMITTER: Yilmazer YB 

PROVIDER: S-EPMC5159827 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Serotonergic neuronal death and concomitant serotonin deficiency curb copulation ability of Drosophila platonic mutants.

Yilmazer Yasemin B YB   Koganezawa Masayuki M   Sato Kosei K   Xu Jinhua J   Yamamoto Daisuke D  

Nature communications 20161213


Drosophila platonic (plt) males court females, but fail to copulate. Here we show that plt is an allele of scribbler (sbb), a BMP signalling component. sbb knockdown in larvae leads to the loss of approximately eight serotonergic neurons, which express the sex-determinant protein Doublesex (Dsx). Genetic deprivation of serotonin (5-HT) from dsx-expressing neurons results in copulation defects. Thus, sbb<sup>+</sup> is developmentally required for the survival of a specific subset of dsx-expressi  ...[more]

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