Does host plant adaptation lead to pesticide resistance in generalist herbivores?

Dermauw, Wannes; Pym, Adam; Bass, Chris; Leeuwen, Thomas Van; Feyereisen, René

doi:10.1016/j.cois.2018.01.001

Cited by 79 publications

(63 citation statements)

References 69 publications

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“…For example, up‐regulation of P450s, glutathione S ‐transferases (GSTs), carboxylesterases (COEs), and ABC transporters was observed when avirulent soybean aphids fed on soybean containing Rag 1 , suggesting a specific stress response to the xenobiotic compounds produced by Rag 1 soybean variety . These mechanisms are similar to those used by insects against synthetic insecticides, and could explain the difference in susceptibility of avirulent and virulent soybean aphid to lambda‐cyhalothrin, assuming the virulent aphid also presents similar mechanisms that allow them to survive on Rag1 + 2 plants. For example, similar mechanisms against plant secondary compounds were observed for Bradysia odoriphaga larva reared on garlic and humus, leading to a higher tolerance to insecticides (e.g.…”

Section: Discussionmentioning

confidence: 93%

Soybean aphid (Hemiptera: Aphididae) response to lambda‐cyhalothrin varies with its virulence status to aphid‐resistant soybean

Valmorbida

Muraro

Hodgson

et al. 2019

Pest Management Science

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BACKGROUND Soybean aphid, Aphis glycines, is an invasive insect in North America, considered one of the most important pests of soybean. Their management relies heavily on foliar insecticides, but there is growing effort to expand these tools to include aphid‐resistant varieties. We explored if the LC50 and LC25 of lambda‐cyhalothrin varied between virulent (resistant to Aphis glycines (Rag) soybeans) and avirulent (susceptible to Rag‐genes soybeans) populations of soybean aphid with a leaf‐dip bioassay. We also investigated the response to the LC25 of lambda‐cyhalothrin on adults (F0) and their progeny (F1) for both avirulent and virulent soybean aphid. RESULTS The LC50 of the virulent aphid population was significantly higher compared with the LC50 of the avirulent population. The LC25 significantly reduced fecundity of the F0 generation of avirulent soybean aphid, but no significant effect was observed for virulent aphids. In addition, the LC25 significantly shortened the adult pre‐oviposition period (APOP) and lengthened the total pre‐oviposition period (TPOP) of avirulent aphids, while the mean generation time (T) was significantly increased. For the virulent aphid, sublethal exposure significantly lengthened development time of first and third instars, TPOP, and adult longevity. In addition, all demographic parameters of virulent soybean aphid were significantly affected when they were exposed to the LC25 of lambda‐cyhalothrin. CONCLUSION Our results demonstrate lambda‐cyhalothrin is less toxic to virulent aphids and exposure to the LC25 can trigger hormesis, which may have implications for the long‐term management of this pest with this insecticide as well as with aphid‐resistant varieties of soybean. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 93%

Soybean aphid (Hemiptera: Aphididae) response to lambda‐cyhalothrin varies with its virulence status to aphid‐resistant soybean

Valmorbida

Muraro

Hodgson

et al. 2019

Pest Management Science

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“…According to the "pre-adaptation hypothesis", polyphagous insects have a greater ability to cope with toxins from a wide range of host-plants than monophagous ones. Thus, polyphagous insects have a higher potential to generate insecticide resistance 40,41 (but see 42 ). In this explanation, the emergence of insecticide resistance is no more than the re-use of existing detoxification genes that are adaptively evolved to host-plants.…”

Section: Discussionmentioning

confidence: 99%

Adaptation by copy number variation increases insecticide resistance in fall armyworms

Nam

Gimenez

Hilliou³

et al. 2019

Preprint

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Insecticide resistance is a major main challenge in pest control, and understanding its genetic basis is a key topic in agricultural ecology. Detoxification genes are well-known genetic elements that play a key role in adaptation to xenobiotics. The adaptive evolution of detoxification genes by copy number variations has been interpreted as a cause of insecticide resistance. However, the same pattern can be generated by the adaptation to host-plant defense toxins as well. In this study, we tested in fall armyworms (Lepidoptera Spodoptera frugiperda) if adaptation by copy number variation is the cause of the increased level of insecticide resistance from two geographic populations with different levels of resistance and two strains with different host plants. Following the generation of an assembly with chromosome-sized scaffolds (N50 = 13.2Mb), we observed that these two populations show a significant allelic differentiation of copy number variations, which is not observed between strains. In particular, a locus with almost complete allelic differentiation (Fst > 0.8) includes a cluster of P450 genes, which are well-known key players in detoxification. Detoxification genes are overrepresented in the genes with copy number variations, and the observed copy number variation appears to have beneficial effects in general. From this result, we concluded that copy number variation of detoxification genes in fall armyworms plays a key role in the insecticide resistance but not in the adaptation to host-plants, suggesting that the evolution of insecticide resistance may occur independently from host-plant adaptation.

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“…Other examples include grasshoppers and green mirids, which feed on multiple hosts from different families, yet were shown to exhibit host-associated differentiation (Antwi, Sword, & Medina, 2015). These cases of hostassociated differentiation were shown to maintain gene flow across large distances (Dermauw, Pym, Bass, Van Leeuwen, & Feyereisen, 2018;Hereward, Walter, DeBarro, Lowe, & Riginos, 2013).…”

Section: Introductionmentioning

confidence: 99%

Species‐complex diversification and host‐plant associations in Bemisia tabaci: A plant‐defence, detoxification perspective revealed by RNA‐Seq analyses

et al. 2018

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Insect-plant associations and their role in diversification are mostly studied in specialists. Here, we aimed to identify macroevolution patterns in the relationships between generalists and their host plants that have the potential to promote diversification. We focused on the Bemisia tabaci species complex containing more than 35 cryptic species. Mechanisms for explaining this impressive diversification have focused so far on allopatric forces that assume a common, broad, host range. We conducted a literature survey which indicated that species in the complex differ in their host range, with only few showing a truly broad one. We then selected six species, representing different phylogenetic groups and documented host ranges. We tested whether differences in the species expression profiles of detoxification genes are shaped more by their phylogenetic relationships or by their ability to successfully utilize multiple hosts, including novel ones. Performance assays divided the six species into two groups of three, one showing higher performance on various hosts than the other (the lower performance group). The same grouping pattern appeared when the species were clustered according to their expression profiles. Only species placed in the lower performance group showed a tendency to lower the expression of multiple genes. Taken together, these findings bring evidence for the existence of a common detoxification "machinery," shared between species that can perform well on multiple hosts. We raise the possibility that this "machinery" might have played a passive role in the diversification of the complex, by allowing successful migration to new/novel environments, leading, in some cases, to fragmentation and speciation.

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Does host plant adaptation lead to pesticide resistance in generalist herbivores?

Cited by 79 publications

References 69 publications

Soybean aphid (Hemiptera: Aphididae) response to lambda‐cyhalothrin varies with its virulence status to aphid‐resistant soybean

Soybean aphid (Hemiptera: Aphididae) response to lambda‐cyhalothrin varies with its virulence status to aphid‐resistant soybean

Adaptation by copy number variation increases insecticide resistance in fall armyworms

Species‐complex diversification and host‐plant associations in Bemisia tabaci: A plant‐defence, detoxification perspective revealed by RNA‐Seq analyses

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