FAR gene enables the brown planthopper to walk and jump on water in paddy field
| Autor: | Xin-Qiu Wang, Dan-Ting Li, Chuan-Xi Zhang, Xuan Chen |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Integrated pest management Honeydew Surface Properties Movement Cuticle media_common.quotation_subject Genes Insect Arthropod cuticle Insect Biology General Biochemistry Genetics and Molecular Biology Hemiptera 03 medical and health sciences 0302 clinical medicine Botany Animals General Environmental Science media_common fungi Gene Expression Regulation Developmental Water Oryza biology.organism_classification Aldehyde Oxidoreductases Hydrocarbons 030104 developmental biology Gene Knockdown Techniques 030220 oncology & carcinogenesis Paddy field RNA Interference Brown planthopper General Agricultural and Biological Sciences Desiccation Hydrophobic and Hydrophilic Interactions Sequence Analysis |
| Zdroj: | Science China Life Sciences. 62:1521-1531 |
| ISSN: | 1869-1889 1674-7305 |
| DOI: | 10.1007/s11427-018-9462-4 |
| Popis: | Many insects can live on water and survive being caught in the rain. Current research has shown that insect cuticular hydrocarbons (CHC) confer desiccation resistance to maintain water balance. In this study, we identified a fatty acyl-CoA reductase gene (NlFAR) of the rice brown planthopper, Nilaparvata lugens that is essential for the production of CHCs, and found that NlFAR is essential for N. lugens to walk and jump on water when moving from one rice plant to another in paddy fields. NlFAR was mainly expressed in the integument at the beginning of each molt. Cuticular surface analysis by scanning electron microscopy and characterization of CHC extracts indicated that N. lugens with knockdown of NlFAR using RNA inference (RNAi) had a neater epicuticle layer and a significant decrease in CHC contents. Knockdown of NlFAR did not influence the desiccation resistance of N. lugens, but the dsNlFAR-treated insects were easily adhered and moistened by water droplets or their own secreted honeydew and unable to walk or jump on water. These results suggested that NlFAR is a crucial enzyme for CHC biosynthesis and cuticle waterproofing, but not for water retention of N. lugens, which may provide a potential strategy for pest management. |
| Databáze: | OpenAIRE |
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