Referenced in: none

Automatically associated channels: Slo1

Title: TMC-1 attenuates C. elegans development and sexual behaviour in a chemically defined food environment.

Authors: Liusuo Zhang, Daisy G Gualberto, Xiaoyan Guo, Paola Correa, Changhoon Jee, L Rene Garcia

Journal, date & volume: Nat Commun, 2015 , 6, 6345

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/25695879

Abstract
Although diet affects growth and behaviour, the adaptive mechanisms that coordinate these processes in non-optimal food sources are unclear. Here we show that the C. elegans tmc-1 channel, which is homologous to the mammalian tmc deafness genes, attenuates development and inhibits sexual behaviour in non-optimal food, the synthetic CeMM medium. In CeMM medium, signalling from the pharyngeal MC neurons and body wall muscles slows larval development. However, in the non-standard diet, mutation in tmc-1 accelerates development, by impairing the excitability of these cells. The tmc-1 larva can immediately generate ATP when fed CeMM, and their fast development requires insulin signalling. Our findings suggest that the tmc-1 channel indirectly affects metabolism in wild-type animals. In addition to regulating the development, we show that mutating tmc-1 can relax diet-induced inhibition of male sexual behaviour, thus indicating that a single regulator can be genetically modified to promote growth rate and reproductive success in new environments.