Skip to main content
Log in

Antifeedant properties and contact toxicities of the trichocellins A-I and B-II from a Trichoderma reesei against Plutella xylostella larvae

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

Abstract

Plutella xylostella is a destructive cabbage pest responsible for huge economic losses. Heavy and continuous application of synthetic pesticides to control this pest has resulted in numerous environmental issues. Thus, discovering alternative methods to control P. xylostella, with reduced harmful effects has become crucial. In the present study we investigated the antifeedant activities and contact toxicities of two peptaibiotics, trichocellin A-I and B-II, produced by an endophytic fungus Trichoderma reesei against P. xylostella larvae. The two compounds were isolated using bioassay guided chromatographic methods from an ethyl acetate extract of T. reesei, isolated from the sedge Cyperus iria. The chemical structures of the two compounds were elucidated using mass spectrometric and NMR data. Both trichocellins showed 100% feeding deterrence activity against P. xylostella while the DC50 value for trichocellin A-I was 2.38 µg cm−2. The amount isolated was not sufficient to determine the DC50 value for trichocellin B-II. In addition, both compounds showed moderate contact toxicities against P. xylostella larvae having a mean motility around 40–50%. Trichocellin A-I and B-II, have previously been reported as having antibiotic properties. However, this is the first study to report the antifeedant and contact toxicities of trichocellin A-I and B-II against the economically important insect pest P. xylostella. The results of this study encourage further investigation of secondary metabolites of Trichoderma species for development as natural pest control agents in agriculture.

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
Fig. 3
Fig. 4

Similar content being viewed by others

Availability of data and material

Experimental procedures and NMR data are available under supplementary information.

References

Download references

Acknowledgements

This work was financially supported by the National Science Foundation, Sri Lanka research grant [RG/2016/EB/03] and Uva Wellassa University, Sri Lanka research grant [RG/2018/03] to PBR as well as Natural Sciences and Engineering Research Council (NSERC), Canada grant to RJA. Support and assistance provided by Agricultural Research Station, Seetha-eliya for insect larvae collection and rearing are also acknowledged.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Pamoda B. Ratnaweera.

Ethics declarations

Consent for publication

All authors give the consent for publication.

Conflicts of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

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

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 239 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ratnaweera, P.B., Madhushika, D.P.H., Jayasundara, J.M.N.M. et al. Antifeedant properties and contact toxicities of the trichocellins A-I and B-II from a Trichoderma reesei against Plutella xylostella larvae. Int J Trop Insect Sci 42, 845–854 (2022). https://doi.org/10.1007/s42690-021-00608-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42690-021-00608-2

Keywords

Navigation