PMID- 35093500 OWN - NLM STAT- MEDLINE DCOM- 20220506 LR - 20220506 IS - 1879-0240 (Electronic) IS - 0965-1748 (Linking) VI - 142 DP - 2022 Mar TI - Doublesex regulates male-specific differentiation during distinct developmental time windows in a parasitoid wasp. PG - 103724 LID - S0965-1748(22)00006-6 [pii] LID - 10.1016/j.ibmb.2022.103724 [doi] AB - Sexually dimorphic traits in insects are subject to sexual selection, but our knowledge of the underlying molecular mechanisms is still scarce. Here we investigate how the highly conserved gene, Doublesex (Dsx), is involved in shaping sexual dimorphism in the model parasitoid wasp Nasonia vitripennis (Hymenoptera: Pteromalidae). First, we present the revised Dsx gene structure including an alternative transcription start, and two additional male NvDsx transcript isoforms. We show sex-specific NvDsx expression and splicing throughout development, and demonstrate that transient NvDsx silencing in different male developmental stages shifts two sexually dimorphic traits from male to female morphology, with the effect being dependent on the timing of silencing. In addition, we determined the effect of NvDsx on the development of reproductive organs. Transient silencing of NvDsx in early male larvae affects the growth and differentiation of the internal and external reproductive tissues. We did not observe phenotypic changes in females after NvDsx silencing. Our results indicate that male NvDsx is required to suppress female-specific traits and/or to promote male-specific traits during distinct developmental windows. This provides new insights into the regulatory activity of Dsx during male wasp development in the Hymenoptera. CI - Copyright (c) 2022 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Wang, Yidong AU - Wang Y AD - Wageningen University, Laboratory of Entomology, Wageningen, the Netherlands. FAU - Rensink, Anna H AU - Rensink AH AD - Evolutionary Genetics, Development and Behaviour, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands. FAU - Fricke, Ute AU - Fricke U AD - Wageningen University, Laboratory of Entomology, Wageningen, the Netherlands. FAU - Riddle, Megan C AU - Riddle MC AD - Biology Department, Western Washington University, Washington, USA. FAU - Trent, Carol AU - Trent C AD - Biology Department, Western Washington University, Washington, USA. FAU - van de Zande, Louis AU - van de Zande L AD - Evolutionary Genetics, Development and Behaviour, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands. FAU - Verhulst, Eveline C AU - Verhulst EC AD - Wageningen University, Laboratory of Entomology, Wageningen, the Netherlands; Wageningen University, Laboratory of Genetics, Wageningen, the Netherlands. Electronic address: eveline.verhulst@wur.nl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220129 PL - England TA - Insect Biochem Mol Biol JT - Insect biochemistry and molecular biology JID - 9207282 RN - 0 (Protein Isoforms) SB - IM MH - Animals MH - Female MH - Larva/genetics MH - Male MH - Protein Isoforms/genetics MH - RNA Splicing MH - Sex Characteristics MH - *Wasps/genetics OTO - NOTNLM OT - Doublesex OT - Nasonia OT - Parasitoid wasps OT - Sex determination OT - Sexual differentiation OT - Sexually dimorphic traits EDAT- 2022/01/31 06:00 MHDA- 2022/05/07 06:00 CRDT- 2022/01/30 20:29 PHST- 2021/09/13 00:00 [received] PHST- 2022/01/19 00:00 [revised] PHST- 2022/01/19 00:00 [accepted] PHST- 2022/01/31 06:00 [pubmed] PHST- 2022/05/07 06:00 [medline] PHST- 2022/01/30 20:29 [entrez] AID - S0965-1748(22)00006-6 [pii] AID - 10.1016/j.ibmb.2022.103724 [doi] PST - ppublish SO - Insect Biochem Mol Biol. 2022 Mar;142:103724. doi: 10.1016/j.ibmb.2022.103724. Epub 2022 Jan 29.