AI Article Synopsis
- Plant essential oils, particularly trans-anethole from star anise, show potential as natural alternatives to synthetic pesticides due to their bioactivity against the green peach aphid, a major pest.
- A comparative transcriptome analysis revealed 559 differentially expressed genes in M. persicae when exposed to a lethal dose of trans-anethole, with notable up-regulation of genes linked to ATP-binding cassette transporters, DnaJ, and cuticle proteins.
- RNA interference studies showed that knocking down the ABC transporter gene (ABCG4) and a DnaJ gene (DnaJC1) significantly increased mortality in aphids, highlighting their roles in the insect's response to the toxicity of trans-anethole.
Article Abstract
Plant essential oils, with high bioactivity and biodegradability, provide promising alternatives to synthetic pesticides for pest control. Trans-anethole is the major component of essential oil from star anise, Illicium verum Hook. The compound has a strong contact toxicity against the green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae), which is a major insect pest of many vegetables and crops. However, little information is known about how M. persicae responds to trans-anethole at the molecular level. We conducted a comparative transcriptome analysis of M. persicae in response to a LD50 dose of trans-anethole. A total of 559 differentially expressed genes were detected in the treated individuals, with 318 genes up-regulated, and 241 genes down-regulated. Gene ontology (GO) analysis revealed that these genes were classified into different biological processes and pathways. We also found that genes encoding ATP-binding cassette (ABC) transporters, DnaJ, and cuticle proteins were dramatically up-regulated in response to trans-anethole. To study the function of these genes, we performed RNA interference (RNAi) analysis. Knockdown of an ABC transporter gene (ABCG4) and a DnaJ gene (DnaJC1) resulted in a significantly increased mortality rate in M. persicae following trans-anethole exposure, indicating the involvement of these two genes in the toxicity response to trans-anethole. The findings provide new insights into the mechanisms of M. persicae in coping with plant essential oils.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8711753 | PMC |
| http://dx.doi.org/10.1093/jisesa/ieab094 | DOI Listing |
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