期刊论文详细信息
International Journal of Molecular Sciences
Exposure to Diflubenzuron Results in an Up-Regulation of a Chitin Synthase 1 Gene in Citrus Red Mite, Panonychus citri (Acari: Tetranychidae)
Wen-Kai Xia1  Tian-Bo Ding1  Jin-Zhi Niu1  Chong-Yu Liao1  Rui Zhong1  Wen-Jia Yang1  Bin Liu1  Wei Dou1 
[1] Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China;
关键词: Panonychus citri;    chitin synthase 1;    diflubenzuron;    insect growth regulators;    pest control;   
DOI  :  10.3390/ijms15033711
来源: mdpi
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【 摘 要 】

Chitin synthase synthesizes chitin, which is critical for the arthropod exoskeleton. In this study, we cloned the cDNA sequences of a chitin synthase 1 gene, PcCHS1, in the citrus red mite, Panonychus citri (McGregor), which is one of the most economically important pests of citrus worldwide. The full-length cDNA of PcCHS1 contains an open reading frame of 4605 bp of nucleotides, which encodes a protein of 1535 amino acid residues with a predicted molecular mass of 175.0 kDa. A phylogenetic analysis showed that PcCHS1 was most closely related to CHS1 from Tetranychus urticae. During P. citri development, PcCHS1 was constantly expressed in all stages but highly expressed in the egg stage (114.8-fold higher than in the adult). When larvae were exposed to diflubenzuron (DFB) for 6 h, the mite had a significantly high mortality rate, and the mRNA expression levels of PcCHS1 were significantly enhanced. These results indicate a promising use of DFB to control P. citri, by possibly acting as an inhibitor in chitin synthesis as indicated by the up-regulation of PcCHS1 after exposure to DFB.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland

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