Response Mechanisms of Invertebrates to Bacillus thuringiensis and Its Pesticidal Proteins
- 1 March 2021
- journal article
- review article
- Published by American Society for Microbiology in Microbiology and Molecular Biology Reviews
- Vol. 85 (1)
- https://doi.org/10.1128/MMBR.00007-20
Abstract
Extensive use of chemical insecticides adversely affects both environment and human health. One of the most popular biological pest control alternatives is bioinsecticides based on Bacillus thuringiensis. This entomopathogenic bacterium produces different protein types which are toxic to several insect, mite, and nematode species. Currently, insecticidal proteins belonging to the Cry and Vip3 groups are widely used to control insect pests both in formulated sprays and in transgenic crops. However, the benefits of B. thuringiensis-based products are threatened by insect resistance evolution. Numerous studies have highlighted that mutations in genes coding for surrogate receptors are responsible for conferring resistance to B. thuringiensis. Nevertheless, other mechanisms may also contribute to the reduction of the effectiveness of B. thuringiensis-based products for managing insect pests and even to the acquisition of resistance. Here, we review the relevant literature reporting how invertebrates (mainly insects and Caenorhabditis elegans) respond to exposure to B. thuringiensis as either whole bacteria, spores, and/or its pesticidal proteins.Keywords
Funding Information
- Ministerio de Economía, Industria y Competitividad, Gobierno de España (BES 2016- 079134)
- Ministerio de Ciencia, Innovación y Universidades (RTI2018-095204-B-C21)
- Ministerio de Ciencia, Innovación y Universidades (FPU15/05652)
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