RPW Speckle Gene

A gene controlling pronotum speckle variation in red palm weevil, offering a molecular target for genetic pest control.

Long, Liu · Chen, Xin · Cheng, Lin · Yang, Hua · Huang, Qiong · Yang, Chunlin · Li, Shujiang

Biology 2026

Advantages

Identifies three candidate genes

Integrating association results with annotation pinpointed three candidate genes: RferTRXR1, RferGH1, and RferLAC2.

Expression correlates with speckle count

qRT-PCR showed that RferTRXR1 and RferGH1 were more highly expressed in individuals with higher speckle numbers.

Inheritance pattern clarified

Pronotum speckle variation is a sex-independent quantitative trait controlled by major loci with additive and dominance effects.

Applications

• Genetic Pest Control：Use speckle count as a marker to screen targets for genetic control.
• Insect Genetic Engineering：Manipulate candidate genes to dissect phenotypic regulation.
• Pest Gene Editing：Edit target genes to validate function and develop control strategies.