Cyclosporin A acts as a novel insecticide against Cry1Ac-susceptible and -resistant Helicoverpa armigera
Pesticide Biochemistry and Physiology, ISSN: 0048-3575, Vol: 188, Page: 105283
2022
- 2Citations
- 5Captures
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Metrics Details
- Citations2
- Citation Indexes2
- CrossRef1
- Captures5
- Readers5
Article Description
Cotton bollworm ( Helicoverpa armigera ) is an economically important pest, which is difficult to manage due to its biological and ecological traits, and resistance to most insecticides. Alternative compounds for the sustainable management of H. armigera are needed. As a fungal metabolite, Cyclosporin A (CsA) has not been applied in agriculture pests. Here, CsA was evaluated as a propective insecticide for H. armigera. The results showed that CsA displayed high insecticidal activity against both Cry1Ac-susceptible and -resistant populations of H. armigera. Moreover, lower concentrations of CsA had clear effects, including significantly reduced pupal weight, pupation rate, emergence rate, ovary size, female fecundity and egg hatchability. Further study confirmed that CsA suppressed calcineurin activity and the subsequent expression of endogenous antimicrobial peptide genes (APMs), leading to impaired immunity, ultimately resulting in delayed development and increased mortality. Thus, CsA treatment could control the cotton bollworm population and even showed efficacy against those with Bt resistance. In addition, the morphological changes observed in insects fed CsA with lower concentrations provide insight into insect immunity, regulation of growth and development, regulation of body color, ovary development and sexual selection under external pressure. Overall, our study provides information on biological control potential of Cry1Ac-susceptible and -resistant populations of H. armigera to develop novel bioinsecticides.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0048357522002504; http://dx.doi.org/10.1016/j.pestbp.2022.105283; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85141497305&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/36464338; https://linkinghub.elsevier.com/retrieve/pii/S0048357522002504; https://dx.doi.org/10.1016/j.pestbp.2022.105283
Elsevier BV
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