| Title: | Chemical Identity and Functional Characterization of Semiochemicals That Promote the Interactions between Rice Plant and Rice Major Pest Nilaparvata lugens |
| Author(s): | Zhang Z; Liu Y; Portaluri V; Woodcock C; Pickett JA; Wang S; Zhou JJ; |
| Address: | "Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, 510640 Guangzhou, China. Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden AL5 2JQ, U.K. Plant Protection College, Shandong Agricultural University, 271018 Taian, China. Eurofins Analytics France, Rue Pierre Adolphe Bobierre, 44323 Nantes, France. School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K. Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China. State Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The interaction between food crops and insect pests is mediated by semiochemicals emitted from host plants. These semiochemicals are natural behavioral modifiers and act on the insect olfactory system to locate hosts and preys. In this study, eight rice neuroactive semiochemicals were identified from rice varieties by GC-EAG and GC-MS. Their ability to modify rice pest behaviors was further studied as individual chemicals and physiologically relevant blend. The total amount of each semiochemical and the expression of their biosynthesis genes were significantly higher in pest susceptible variety than in pest-resistant variety and upregulated by the infestation of the pest Nilaparvata lugens (BPH). The semiochemicals emitted by uninfested plants (UIRVs) were more attractive to BPHs. Interestingly, the attractiveness of UIRVs was significantly reduced by the addition of the blend that mimics the natural composition of these semiochemicals emitted by infested plants (IRVs). Our study suggests a mechanism for the spread of pest infestation from infested plants to uninfested plants nearby. UIRVs initially serve as attractive signals to rice insect pests. The pest infestation changes the rice semiochemical profile to be less attractive or even repellent, which pushes further colonization to uninfested plants nearby. The identified semiochemicals can be used for crop protection based on a push-pull strategy" |
| Keywords: | Animals *Hemiptera *Oryza Pheromones Nilaparvata lugens brown planthopper pest colonization pest resistance push-pull rice semiochemical terpenes; |
| Notes: | "MedlineZhang, Zhenfei Liu, Yong Portaluri, Vincent Woodcock, Christine Pickett, John A Wang, Senshan Zhou, Jing-Jiang eng 2021/04/20 J Agric Food Chem. 2021 Apr 28; 69(16):4635-4644. doi: 10.1021/acs.jafc.1c01135. Epub 2021 Apr 18" |
