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Knockdown of the Trehalose-6-Phosphate Synthase Gene Using RNA Interference Inhibits Synthesis of Trehalose and Increases Lethality Rate in Asian Citrus Psyllid, Diaphorina citri (Hemiptera: Psyllidae).

Authors
  • Liu, Xinyu1
  • Zou, Zhiwen1
  • Zhang, Cong1
  • Liu, Xian1
  • Wang, Jing1
  • Xin, Tianrong1
  • Xia, Bin1
  • 1 School of Life Sciences, Nanchang University, Nanchang 330031, China. , (China)
Type
Published Article
Journal
Insects
Publication Date
Sep 06, 2020
Volume
11
Issue
9
Identifiers
DOI: 10.3390/insects11090605
PMID: 32899929
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Diaphorina citri Kuwayama is the vector of citrus "huanglongbing", a citrus disease which poses a significant threat to the global citrus industry. Trehalose-6-phosphate synthase (TPS) plays an important role in the regulation of trehalose levels of insects, while its functions in D. citri are unclear. In this study, full-length cDNA sequences of the TPS gene from D. citri (DcTPS) were cloned and its expression patterns at various developmental stages were investigated. The results indicated that DcTPS mRNA was expressed at each developmental stage and the highest DcTPS expression was found in the fifth-instar nymphs of D. citri. Additionally, mortality and deformity of D. citri were observed after 24 and 48 h by feeding with three different dsRNA concentrations (20, 100 and 500 ng/μL). The results indicated that DcTPS expression was declined, and mortality and malformation in nymphs were increased via feeding with dsDcTPS. Moreover, the enzyme and trehalose content were decreased, while the content of glucose was significantly higher than that of untreated (control) individuals. This suggests that DcTPS might be vital for the growth and development of D. citri and further studies of the genes should be related to molting and metabolism for controlling D. citri.

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