Skip to main content
Log in

Alterations in the gut enzymes of Helicoverpa armigera (Hübner) induced by dietary Artemisia annua L. essential oil

  • Original Research Article
  • Published:
International Journal of Tropical Insect Science Aims and scope Submit manuscript

Abstract

The current study evaluated the impact of Artemisia annua L. essential oil (EO) on the alterations in the metabolic and detoxifying enzymes present in the gut of Helicoverpa armigera (Hübner) larvae. The A. annua EO was added to the larval diet in different concentrations ranging from 2.5 to 12.5%. The LD30 and LD50 values obtained were 3.78% and 5.16%, respectively. Dietary LD30 and LD50 concentrations of A. annua EO impacted all the metabolic and detoxifying enzymes adversely. The rise in the EO concentration in the diet affected the gut enzyme activity negatively. The dietary LD30 EO decreased the activity of α-amylase and proteases significantly by 64% and 68.3%, respectively which correspondingly rose to 74% and 72.9% with dietary EO at LD50 concentration. On the other hand, the lipase activity diminished at a proportionately lower rate; by 13% and 43.7% with respective dietary LD30 and LD50 EO. A significantly reduced level of detoxifying enzymes; glutathione-S-transferase, α-esterase and β-esterase was also recorded in the larvae fed on A. annua EO-added diet. Noticeably, the % decrease in α-esterase level was negatively correlated with the EO concentration in the diet unlike rest of the two enzymes. The impact of EO was also assessed on the total glucose levels which also reduced significantly in the larvae fed with dietary A. annua EO. Current results demonstrated the toxic effects of A. annua essential oil on the H. armigera larvae affecting their survival. Moreover, feeding the larvae with EO-containing diet inhibited the action of digestive and detoxifying enzymes indicating the persistent efficacy of EO. Future studies could identify the bioactive constituent responsible for these effects which can be used to formulate an eco-safe intervention against H. armigera.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others

References

Download references

Acknowledgements

The authors are highly grateful to the University Grant Commission (UGC), New Delhi for providing financial assistance to carry out the present investigations. Authors are also thankful to National Bureau of Agricultural Insect Resources (NBAIR) live insect repository for providing Helicoverpa armigera (Accession No: NBII-MP-NOC-01) culture to carry out the investigations. Thanks, are extended to the Principal, Acharya Narendra Dev College for providing infrastructure and research facilities.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Sarita Kumar.

Ethics declarations

Conflict of interest

Authors declare no conflict of interest.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Dagar, V.S., Mishra, M., Sharma, A. et al. Alterations in the gut enzymes of Helicoverpa armigera (Hübner) induced by dietary Artemisia annua L. essential oil. Int J Trop Insect Sci 43, 1295–1303 (2023). https://doi.org/10.1007/s42690-023-01035-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42690-023-01035-1

Keywords

Navigation