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Journal of Integrative Agriculture  2020, Vol. 19 Issue (11): 2758-2766    DOI: 10.1016/S2095-3119(20)63188-4
Special Issue: 昆虫分子生物学合辑Insect Molecular Biology 昆虫和植物互作合辑Insect and Plant Interact
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Pancreatic triglyceride lipase is involved in the virulence of the brown planthopper to rice plants
YUAN Long-yu, HAO Yuan-hao, CHEN Qiao-kui, PANG Rui, ZHANG Wen-qing
State Key Laboratory of Biocontrol/School of Life Sciences, SunYat-sen University, Guangzhou 510275, P.R.China
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The brown planthopper (BPH), Nilaparvata lugens, an important rice insect pest, can enhance its virulence to BPH-resistant rice within as short a span as several generations.  Here, we cloned a pancreatic triglyceride lipase (PTL) gene (NlPTL) in N. lugens, and found that its mRNA level was higher in the high virulence population (fed on variety Rathu Heenati, P-RH) than in the low virulence population (fed on variety Taichung Native 1, P-TN1).  Knocking down NlPTL caused BPH individuals to spend more time in non-penetration and the pathway phases and less time feeding on the phloem of rice plants; these changes consequently decreased food intake, lipid content, survival rate, and fecundity in the insects.  These findings reveal for the first time that PTL in BPH is involved in its virulence to rice plants.
Keywords:  pancreatic triglyceride lipase        Nilaparvata lugens        virulence        rice        lipid  
Received: 25 December 2019   Accepted:
Fund: This work was funded by the National Key Research and Development Program of China (2017YFD0200900) and the Natural Science Foundation of Guangdong Province, China (2017A030310210).
Corresponding Authors:  Correspondence ZHANG Wen-qing, Tel: +86-20-39332963, Fax: +86-20-39943515, E-mail:   
About author:  YUAN Long-yu, E-mail:;

Cite this article: 

YUAN Long-yu, HAO Yuan-hao, CHEN Qiao-kui, PANG Rui, ZHANG Wen-qing. 2020. Pancreatic triglyceride lipase is involved in the virulence of the brown planthopper to rice plants. Journal of Integrative Agriculture, 19(11): 2758-2766.

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