PMID- 31736789 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 1664-042X (Print) IS - 1664-042X (Electronic) IS - 1664-042X (Linking) VI - 10 DP - 2019 TI - Evaluation of the Expression and Function of the TRE2-like and TRE2 Genes in Ecdysis of Harmonia axyridis. PG - 1371 LID - 10.3389/fphys.2019.01371 [doi] LID - 1371 AB - Harmonia axyridis is an important predatory insect and widely used in biological control of agricultural and forestry pests. Trehalose is directly involved in the energy storage of the H. axyridis and in the oxidative function of various physiological activities thereby providing an energy source for its growth and development. The aim of this study was to explore the potential function of membrane-bound-like trehalase (TRE2-like) and membrane-bound trehalase (TRE2) genes in H. axyridis by RNAi. In addition, the activity of soluble and membrane-bound trehalase and the expression of genes related to trehalose and glycogen metabolism were determined in the larvae injected with dsTRE2-like or dsTRE2. The results showed that wing abnormality and mortality appeared in adults, as well as the activity of soluble trehalase and glycogen contents increased when interfering with TRE2-like gene. However, the activity of membrane-bound trehalase, trehalose and glucose contents in the larvae decreased. The expression of glycogen synthase (GS) and glycogen phosphorylase (GP) genes were decreased after RNAi in the ecdysis stage. The expression of chitin synthase gene A (CHSA), chitin synthase gene B (CHSB), and trehalose-6-phosphate synthase genes (TPS) were decreased significantly after RNAi, especially in the ecdysis stage. These results indicated that RNA interference is capable of knocking down gene expression of TRE2-like and TRE2, thereby disrupting trehalose metabolism which affects the chitin synthesis pathway in turn and also leads to developmental defects, such as wing deformities. This study could provide some theoretical guidance for the function of TRE2 gene in other insects. CI - Copyright (c) 2019 Li, Chen, Wang, Pan, Wang, Wang and Tang. FAU - Li, Yan AU - Li Y AD - College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. FAU - Chen, Xu AU - Chen X AD - Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China. FAU - Wang, Sha-Sha AU - Wang SS AD - College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. FAU - Pan, Bi-Ying AU - Pan BY AD - College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. FAU - Wang, Shi-Gui AU - Wang SG AD - College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. FAU - Wang, Su AU - Wang S AD - Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China. FAU - Tang, Bin AU - Tang B AD - College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. LA - eng PT - Journal Article DEP - 20191101 PL - Switzerland TA - Front Physiol JT - Frontiers in physiology JID - 101549006 PMC - PMC6839538 OTO - NOTNLM OT - Harmonia axyridis OT - RNA interference OT - TRE2 OT - TRE2-like OT - physiological activities EDAT- 2019/11/19 06:00 MHDA- 2019/11/19 06:01 PMCR- 2019/11/01 CRDT- 2019/11/19 06:00 PHST- 2019/09/06 00:00 [received] PHST- 2019/10/15 00:00 [accepted] PHST- 2019/11/19 06:00 [entrez] PHST- 2019/11/19 06:00 [pubmed] PHST- 2019/11/19 06:01 [medline] PHST- 2019/11/01 00:00 [pmc-release] AID - 10.3389/fphys.2019.01371 [doi] PST - epublish SO - Front Physiol. 2019 Nov 1;10:1371. doi: 10.3389/fphys.2019.01371. eCollection 2019.