Exploring the Role of Pheromones and CRISPR/Cas9 in the Behavioral and Olfactory Mechanisms of Spodoptera frugiperda

TL;DR

This paper explores how CRISPR/Cas9 and pheromones can be used to disrupt mating and communication in Spodoptera frugiperda, a harmful pest affecting crops.

Contribution

The paper introduces CRISPR/Cas9 as a novel, environmentally friendly method to disrupt mating communication in S. frugiperda.

Findings

CRISPR/Cas9 can disrupt volatile-sensing mechanisms in S. frugiperda.

Gene drive systems could target pheromone signaling pathways to block reproduction.

Mutant S. frugiperda with impaired behaviors could be used for long-term pest control.

Abstract

Spodoptera frugiperda, a significant global agricultural pest, poses a substantial threat to maize and other crops, resulting in considerable yield losses. To control this pest, CRISPR/Cas9 is considered a state-of-the-art genetic control strategy, as it significantly disrupts S. frugiperda mating communication and volatile sensing mechanisms. After overcoming the challenges associated with CRISPR/Cas9 application, it remains a powerful, new, environmentally friendly, and revolutionary platform for precise, targeted pest management in S. frugiperda.

Globally, Spodoptera frugiperda is a major threat to many important crops, including maize, rice, and cotton, causing significant economic damage. To control this invasive pest, environmentally friendly pest control techniques, including pheromone detection and identification of potential molecular targets to disrupt S. frugiperda mating communication, are needed. Female moths biosynthesize pheromones and emit them from the pheromone gland, which significantly depends on the intrinsic factors of the moth. Male S. frugiperda have a sophisticated olfactory circuit on their antennae that recognizes pheromone blends via olfactory receptor neurons (ORNs). With its potential to significantly modify the insect genome, CRISPR/Cas9 offers a revolutionary strategy to control this insect pest. The impairing physiological behaviors and disrupting the S. frugiperda volatile-sensing mechanism are the main potential applications of CRISPR/Ca9 explored in this review. Furthermore, the release of mutant S. frugiperda for their long-term persistence must be integral to the adoption of this technology. Looking forward, CRISPR/Cas9-based gene drive systems have the potential to synergistically target pheromone signaling pathways in S. frugiperda by disrupting pheromone receptors and key biosynthesis genes, thereby effectively blocking intraspecific communication and reproductive success. In conclusion, CRISPR/Cas9 provides an environmentally friendly and revolutionary platform for precise, targeted pest management in S. frugiperda.

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