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. 2021 Jan 21;11:2061. doi: 10.1038/s41598-021-81548-2

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Knockdown of Dα1 or Dβ2 disrupted the day/night remodelling and PDF cycling of the s-LNv dorsal terminals. (a) Representative confocal images of the s-LNv dorsal terminals of control flies (PDF-Gal4/ +) and flies with Dα1 (PDF-Gal4 > uas-nAChR-Dα1-RNAi) and Dβ2 (PDF-Gal4 > uas-nAChR-Dβ2-RNAi) knocked down in LNv clock neurons taken in the day (ZT2) and night (ZT14). (b) The s-LNv dorsal terminals of control flies showed greater branching complexity in the day than at night (t₁₇ = 2.3, p = 0.036), this day/night difference in terminal complexity was removed in PDF > Dα1-RNAi (t₁₉ = 1.4, p = 0.183) and PDF > Dβ2-RNAi (t₁₃ = -0.7, p = 0.515) flies. (c) PDF accumulation in the s-LNv dorsal terminals was greater in the day than at night for control flies (t₁₇ = 2.9, p = 0.010), but not in PDF > Dα1-RNAi flies (t₁₉ = 1.8, p = 0.089) and PDF > Dβ2-RNAi flies (t₁₄ = 1.3, p = 0.218). Each data point represents a single brain, n = 6–15 brains.