Review of the use of naturally occurring, ecologically active chemicals to regulate insect pests in rice crops
Author of the article:MO Xiao-Chang LOU Yong-Gen
Author's Workplace：Ministry of Agriculture Key Laboratory of Agricultural Entomology, Institute of Insect Sciences,Zhejiang University, Hangzhou 310058, China
Key Words：rice pest, natural enemy, plant volatile, sex pheromone, induced resistance, chemical elicitor
Abstract： Chemicals play an important role in mediating insect-plant interactions and the intra- and interspecific interactions of insects or plants. Exploitation of chemicals that regulate these intra- and interspecific interactions could effectively reduce the population densities of insect pests and decrease pesticide use. We here review the latest research on the use of such chemicals to modulate the numbers of insect pests and their natural enemies in rice crops, including insect sex pheromones, rice volatiles, non-host plant extracts, chemical elicitors, and genetically-modified rice varieties. We also provide some insights for the direction of future research. We hope that this paper will promote the application of techniques based on ecologically functional chemicals in rice fields and thereby reduce reliance on pesticides.