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    					| BIOINSECTICIDES AS FUTURE MAINSTREAM PEST CONTROL AGENTS: OPPORTUNITIES AND CHALLENGES |  
						| Mingbo QU1,2, Hans MERZENDORFER3(  ), Bernard MOUSSIAN4(  ), Qing YANG1,2,5(  ) |  
						| 1. School of Bioengineering, Dalian University of Technology, Dalian 116024, China. 2. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
 3. Institute of Biology, University of Siegen, 57076 Siegen, Germany.
 4. Interfaculty Institute of Cell Biology, University of Tübingen, 72076 Tübingen, Germany.
 5. Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
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													    | Abstract  •Wide use of botanical insecticides is limited by the availability of certain plants. •Studies are needed to improve RNAi efficiency and to assess their safety risk. •Microbial insecticides are promising, but they only control a narrow range of pests. •Multitarget approach should be a promising strategy in future pest control. •Nanoformulation could enhance stability and control the release of bioinsecticides.
 Bioinsecticides are naturally-occurring substances from different sources that control insect pests. Ideal bioinsecticides should have low toxicity to non-target organisms. They should also be easily degraded in sewage treatment works and natural environments, highly effective in small quantities and affect target pests only. Public concerns about possible side-effects of synthetic pesticides have accelerated bioinsecticide research and development. However, to develop bioinsecticides into mainstream products, their high production costs, short shelf-life and often uncertain modes of action need to be considered. This review summarizes current progress on bioinsecticides which are categorized as biochemical insecticides and their derivatives, plant-incorporated protectants, and microbial bioinsecticides. The current constraints that prevent bioinsecticides from being widely used are discussed and future research directions are proposed. |  
															| Keywords 
																																																				biochemical insecticide  
																		  																																				bioinsecticide  
																		  																																				microbial bioinsecticides  
																		  																																				plant-incorporated protectant  
																		  																																				RNA insecticide |  
															| Corresponding Author(s):
																Hans MERZENDORFER,Bernard MOUSSIAN,Qing YANG |  
															| Just Accepted Date: 04 June 2021  
																																														Online First Date: 13 July 2021   
																																														Issue Date: 17 January 2022 |  |  
								            
								                
																																												
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