Insecticide resistance in the brown planthopper, Nilaparvata lugens (Stål): Mechanisms and status in Asian countries

Abstract

The brown planthopper, Nilaparvata lugens (Stål) is a destructive rice pest found in almost all the rice-growing areas across the globe. In pest management strategies, insecticides are the vital element to control this insect pest. But recently their heavy use poses a risk of control failure because of the development of insecticide resistance. Quick insecticide resistance development nature in N. lugens intrigued scientists to understand the complex resistance mechanism(s), side by side pledge the importance of regular monitoring to know the trend of resistance development. Resistance mechanisms like, target-site insensitivity and enhanced activity of detoxifying enzymes, have been extensively studied and identified in governing the resistance development of N. lugens. Both the field collected and laboratory selected pest populations were tested against commonly used insecticides to detect insecticide resistance ratio. In this review, recent findings of resistance mechanisms, candidate genes those contribute in resistance development have been summarized. We also provide an insight into the metabolic resistance mechanisms that confer significant levels of resistances and the current status of insecticide resistance in N. lugens. This review will help to get a clearer view on present research directions of insecticide resistance in N. lugens.