AI Article Synopsis
- Research shows that the size of gene families related to detoxifying toxins in insects can relate to their diet complexity and likelihood of developing resistance to insecticides.
- A study analyzed cytochrome P450, carboxyl/cholinesterase, and glutathione S-transferase genes in 65 insect species, revealing a 2-4 fold variation in gene numbers.
- There’s a strong link between gene numbers and feeding preferences in some insect groups like Hymenoptera, but not in others like Lepidoptera; larger gene families also tend to be associated with species that have a higher chance of insecticide resistance.
Article Abstract
The size of gene families associated with xenobiotic detoxification in insects may be associated with the complexity of their diets and their propensities to develop insecticide resistance. We test these hypotheses by collating the annotations of cytochrome P450, carboxyl/cholinesterase and glutathione S-transferase genes in 65 insect species with data on their host use and history of insecticide resistance. We find 2-4 fold variation across the species in the numbers of these genes and, in some orders, especially the Hymenoptera, there is a clear relationship between the numbers of genes and feeding preferences. However in other orders, in particular the Lepidoptera, no such relationship is apparent. The size of these three gene families also tend to correlate with insecticide resistance propensity but this may not be an independent effect because species with broader host ranges are more likely to be pests that are heavily sprayed with insecticides.
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| http://dx.doi.org/10.1016/j.cois.2015.12.001 | DOI Listing |
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