PMID- 31370145 OWN - NLM STAT- MEDLINE DCOM- 20191231 LR - 20200225 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 20 IP - 15 DP - 2019 Jul 31 TI - Silencing of the Chitin Synthase Gene Is Lethal to the Asian Citrus Psyllid, Diaphorina citri. LID - 10.3390/ijms20153734 [doi] LID - 3734 AB - Chitin synthase is a critical enzyme that catalyzes N-acetylglucosamine to form chitin, which plays an important role in the growth and development of insects. In this study, we identified a chitin synthase gene (CHS) with a complete open reading frame (ORF) of 3180 bp from the genome database of Diaphorina citri, encoding a protein of 1059 amino acid residues with the appropriate signature motifs (EDR and QRRRW). Reverse transcription-quantitative PCR (RT-qPCR) analysis suggested that D. citri CHS (DcCHS) was expressed throughout all developmental stages and all tissues. DcCHS had the highest expression level in the integument and fifth-instar nymph stage. Furthermore, the effects of diflubenzuron (DFB) on D. citri mortality and DcCHS expression level were investigated using fifth-instar nymph through leaf dip bioassay, and the results revealed that the nymph exposed to DFB had the highest mortality compared with control group (Triton-100). Silencing of DcCHS by RNA interference resulted in malformed phenotypes and increased mortality with decreased molting rate. In addition, transmission electron microscopy (TEM) and fluorescence in situ hybridization (FISH) also revealed corresponding ultrastructural defects. Our results suggest that DcCHS might play an important role in the development of D. citri and can be used as a potential target for psyllid control. FAU - Lu, Zhan-Jun AU - Lu ZJ AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Huang, Yu-Ling AU - Huang YL AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Yu, Hai-Zhong AU - Yu HZ AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. yuhaizhong1988@163.com. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. yuhaizhong1988@163.com. FAU - Li, Ning-Yan AU - Li NY AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Xie, Yan-Xin AU - Xie YX AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Zhang, Qin AU - Zhang Q AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Zeng, Xiang-Dong AU - Zeng XD AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Hu, Hao AU - Hu H AD - Saskatoon Research Center, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2, Canada. FAU - Huang, Ai-Jun AU - Huang AJ AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Yi, Long AU - Yi L AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. FAU - Su, Hua-Nan AU - Su HN AD - College of Life Sciences, Gannan Normal University, Ganzhou 341000, China. AD - National Navel Orange Engineering Research Center, Ganzhou 341000, China. LA - eng GR - 31560602/National Natural Science Foundation of China/ GR - 2018YFD0201504/Ministry of Science and Technology of China/ GR - GJJ180747/Educational Commission of Jiangxi Province of China/ GR - 20171BCB23074/Science and Technology Department of Jiangxi Province/ PT - Journal Article DEP - 20190731 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Insect Proteins) RN - 0 (RNA, Small Interfering) RN - EC 2.4.1.16 (Chitin Synthase) RN - J76U6ZSI8D (Diflubenzuron) SB - IM MH - Amino Acid Sequence MH - Animals MH - Chitin Synthase/antagonists & inhibitors/*genetics/metabolism MH - Citrus/parasitology MH - Diflubenzuron/pharmacology MH - Fruit/parasitology MH - Gene Expression Regulation, Developmental MH - *Genome, Insect MH - Hemiptera/drug effects/enzymology/*genetics/growth & development MH - Insect Control MH - Insect Proteins/antagonists & inhibitors/*genetics/metabolism MH - Molting/drug effects/genetics MH - Nymph/drug effects/*genetics/growth & development/metabolism MH - Open Reading Frames MH - Phylogeny MH - *RNA Interference MH - RNA, Small Interfering/genetics/metabolism MH - Sequence Alignment MH - Sequence Homology, Amino Acid PMC - PMC6696430 OTO - NOTNLM OT - Diaphorina citri OT - RNA interference OT - chitin synthase OT - diflubenzuron COIS- The authors declare no conflict of interest. EDAT- 2019/08/03 06:00 MHDA- 2020/01/01 06:00 PMCR- 2019/08/01 CRDT- 2019/08/03 06:00 PHST- 2019/06/29 00:00 [received] PHST- 2019/07/27 00:00 [revised] PHST- 2019/07/29 00:00 [accepted] PHST- 2019/08/03 06:00 [entrez] PHST- 2019/08/03 06:00 [pubmed] PHST- 2020/01/01 06:00 [medline] PHST- 2019/08/01 00:00 [pmc-release] AID - ijms20153734 [pii] AID - ijms-20-03734 [pii] AID - 10.3390/ijms20153734 [doi] PST - epublish SO - Int J Mol Sci. 2019 Jul 31;20(15):3734. doi: 10.3390/ijms20153734.