The nuclear receptors and are highly conserved and function to regulate molting and reproduction in both hemimetabolous and holometabolous insects. However, their roles in are largely unknown. In the present study, we discover that and are activated in the nymph stages by ecdysone signaling. Transcription disruption of and expression prevents nymph ecdysis and metamorphosis, which leads to abnormal appearance, malformed ovaries, and lethal phenotypes. In addition, we demonstrate that and regulate molting and reproduction by interacting with the intrinsic 20E and JH signaling pathways. Our work offers a deep insight into the action mechanisms of and in insects. Moreover, and could properly be exploited as potential target genes for developing RNAi-based pesticides to control .
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http://dx.doi.org/10.3389/fphys.2023.1123583 | DOI Listing |
J Proteomics
January 2025
Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil; Department of Biology, University of Virginia, Charlottesville, USA.
Survival of brachyuran crabs is temperature-dependent and thermal stress promotes changes during molting. We aimed to decipher the impact of thermal stresses on the X-organ/sinus gland (XO/SG) complex, a temperature-sensitive neuroendocrine tissue involved in the molting regulation of Callinectes sapidus during the intermolt and premolt phases. We employed a proteogenomic approach using specimens subjected to control (24 °C), cold (19 °C), and heat (29 °C) temperatures.
View Article and Find Full Text PDFPoult Sci
December 2024
College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China; Key Laboratory of Livestock and Poultry Resources (Poultry) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Zhengzhou 450046, China. Electronic address:
Fasting is beneficial to alleviate fatty liver, lose weight and improve reproductive function. However, previous studies have shown that, during fasting, disorders of bile acid metabolism were strongly associated with intestinal inflammation. The physiological and biochemical parameters and gene expression of multiple tissues of chickens at every critical time node were measured by ELISA and qPCR.
View Article and Find Full Text PDFPoult Sci
December 2024
State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:
Curr Issues Mol Biol
November 2024
Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China.
In this study, we investigated the regulatory roles of the () gene in the reproductive process of female . Its total cDNA length was 1848 bp, encoding for 460 amino acids. It contained conserved domains typical of epoxide hydrolases, such as the Abhydrolase family domain, the EHN epoxide hydrolase superfamily domain, and the "WWG" and "HGWP" motifs.
View Article and Find Full Text PDFJ Insect Physiol
December 2024
Department of Entomology, VA Tech, Blacksburg, VA, 24061-0319, United States.
The role of nitrogen during insect development and reproduction is key in the success of a species, and is of primary importance in wood feeding taxa. Based on comparison of xylophagous, one-piece termites to the termite sister group, subsocial wood-feeding cockroaches in the genus Cryptocercus, it has been proposed that the evolution of termite eusociality involved a fundamental shift in nitrogen allocation strategies. Cryptocercus exhibits a nitrogen storage economy, with individuals gradually increasing in size and cuticular density over a years-long developmental period.
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