GSA Journals
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Supplemental Material for Christesen et al., 2021

posted on 2021-07-08, 16:21 authored by Danielle Christesen, Ying Ting Yang, Wei Chen, Philip Batterham, Trent Perry

nAChRs are the most abundant excitatory receptors in the insect brain, yet relatively little is known about their roles in neurological pathways. Here, we describe the pleiotropic consequences associated with deletion of the Db1 nAChR subunit. Using somatic CRISPR-Cas9 editing, we show that deletion of Db1 specifically in CCAP neurons impairs wing expansion and this is associated with disruption of signalling by the hormone bursicon. Db1 is a commercial insecticide target, and the fitness costs identified explain the scarcity of resistant mutants in field populations, whilst also providing insight into pathways potentially affected by chronic low-dose exposure in beneficial species.


Article title

Loss of the D1 nicotinic acetylcholine receptor subunit disrupts bursicon-driven wing expansion and diminishes adult viability in Drosophila melanogaster