| Title: | "CRISPR/Cas9 mediated mutagenesis of the major sex pheromone gene, acyl-CoA delta-9 desaturase (DES9) in Fall armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)" |
| Author(s): | Ashok K; Bhargava CN; Asokan R; Pradeep C; Kennedy JS; Manamohan M; Rai A; |
| Address: | "ICAR-Indian Institute of Horticultural Research, Bengaluru 560089, Karnataka, India; Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India. Electronic address: ashokg3s@gmail.com. ICAR-Indian Institute of Horticultural Research, Bengaluru 560089, Karnataka, India; University of Agricultural Sciences, Bengaluru 560065, Karnataka, India. ICAR-Indian Institute of Horticultural Research, Bengaluru 560089, Karnataka, India. Electronic address: asokan.r@icar.gov.in. Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India. ICAR-Indian Institute of Horticultural Research, Bengaluru 560089, Karnataka, India. ICAR - Indian Agricultural Statistics Research Institute, New Delhi 110012, India" |
| DOI: | 10.1016/j.ijbiomac.2023.126557 |
| ISSN/ISBN: | 1879-0003 (Electronic) 0141-8130 (Linking) |
| Abstract: | "The Fall armyworm, Spodoptera frugiperda is a significant global pest causing serious yield loss on several staple crops. In this regard, this pest defies several management approaches based on chemicals, Bt transgenics etc., requiring effective alternatives. Recently CRISPR/Cas9 mediated genome editing has opened up newer avenues to establish functions of various target genes before employing them for further application. The virgin female moths of S. frugiperda emit sex pheromones to draw conspecific males. Therefore, we have edited the key pheromone synthesis gene, fatty acyl-CoA Delta-9 desaturase (DES9) of the Indian population of S. frugiperda. In order to achieve a larger deletion of the DES9, we have designed two single guide RNA (sgRNA) in sense and antisense direction targeting the first exon instead of a single guide RNA. The sgRNA caused site-specific knockout with a larger deletion which impacted the mating. Crossing studies between wild male and mutant female resulted in no fecundity, while fecundity was normal when mutant male crossed with the wild female. This indicates that mating disruption is stronger in females where DES9 is mutated. The current work is the first of its kind to show that DES9 gene editing impacted the likelihood of mating in S. frugiperda" |
| Keywords: | CRISPR/Cas9 Des9 Genome editing Mating disruption Spodoptera frugiperda; |
| Notes: | "PublisherAshok, Karuppannasamy Bhargava, Chikmagalur Nagaraja Asokan, Ramasamy Pradeep, Chalapathi Kennedy, John Samuel Manamohan, Maligeppagol Rai, Anil eng Netherlands 2023/09/02 Int J Biol Macromol. 2023 Aug 30; 253(Pt 2):126557. doi: 10.1016/j.ijbiomac.2023.126557" |
