On the perception of leaf morphology and visible light by Tetranychus urticae Koch (Acariformes, Tetranychidae)

Tsolakis, Haralabos; Ragusa, Ernesto; Sinacori, Milko; Lombardo, Alberto

doi:10.24349/62cg-0jj4

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…However, the latter mechanism appears less likely, given the lack of a strong transcriptional response in predicted detoxification genes. Insects and mites are known to adjust their behaviour to plant environments; for instance, by spinning fine silk scaffolding over plants with high trichome densities, which then they use as a refugee, 66 by movement adaptations 67,68 or differential perception of leaf morphology or chemical signals 12,69 . Future studies should address the role of behavioural changes in P. persimilis adapting to their host plants.…”

Section: Discussionmentioning

confidence: 99%

Adaptation of an arthropod predator to a challenging environment is associated with a loss of a genome‐wide plastic transcriptional response

Bajda,

Wybouw,

Nguyễn

et al. 2024

Pest Management Science

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BackgroundStructural and chemical plant defense traits may reduce the efficacy of biological control agents in integrated pest management. Breeding programmes have shown arthropod predators' potential to acclimate to challenging host plants. However, whether and how these predators adapt to novel plant environments remains unclear. Using the predatory mite Phytoseiulus persimilis – herbivorous mite Tetranychus urticae system in an experimental evolution set‐up, we studied the adaptation mechanisms to tomato and cucumber, plants that possess a distinct repertoire of defensive traits.ResultsExperimental evolution experiments on whole plants revealed that allowing P. persimilis to adapt to tomatoes led to an approx. 100% larger population size. Independent feeding assays showed that tomato‐ and cucumber‐adapted prey reduced predator fecundity. The deleterious effect of ingesting low‐quality prey persisted after the adaptation of the predator to both cucumber and tomato. We demonstrated that JA‐dependent defences reduce prey quality by evaluating predator performance on prey fed on jasmonic acid (JA) defence‐deficient tomato plants. Transcriptomic profiling of the replicated P. persimilis lines showed that long‐term propagation on tomato and cucumber plants produces distinctive gene expression profiles. Predator adaptation to tomatoes results in the loss of a large transcriptional response, where predicted cuticle‐building rather than detoxification pathways are affected.ConclusionWe showed that the adaptation of predatory arthropods to novel, challenging plant does not necessarily occur via the prey but rather through the physical environment of the plant. We provided first insights into the underlying molecular mechanisms.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Adaptation of an arthropod predator to a challenging environment is associated with a loss of a genome‐wide plastic transcriptional response

Bajda,

Wybouw,

Nguyễn

et al. 2024

Pest Management Science

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Leaf trichome-mediated predator effects on the distribution of herbivorous mites within a kidney bean plant

Yoshida,

Choh

2024

Exp Appl Acarol

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Manipulation of Phototactic Responses by Two-Spotted Spider Mites to Improve Performance of Miticides

Nansen,

Savi,

Ward

et al. 2024

Crops

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Insight into phototactic responses by herbivorous crop pests may be used to manipulate their vertical distribution in crop canopies. Here, we tested the hypothesis that the deployment of specific light sources elicits positive or negative phototactic responses and can be used to enhance performance of miticide applications. We characterized movement responses by two-spotted spider mites (Tetranychus urticae) (spider mites) to seven light sources [ambient (control), UV-C, UV-B, blue, red, white, and near-infrared (NIR)] under experimental conditions. Separate experiments were conducted with/without the presence of a shelter. An analytical approach based on linear regression coefficients (intercept and slope) from observations in ascending order was used. Linear regression coefficients from UV-B indicated significantly negative phototactic bio-response. We examined settlement of spider mites when exposed to 11 light source configurations and with adaxial leaf sides facing either upwards or downwards. This experiment revealed strong positive and negative phototactic bio-responses to blue light and UV-B light, respectively. As a validation experiment, soybean plants were experimentally infested with spider mites and subjected to one of the following three treatments: (1) no treatment (control), (2) miticide [pyrethrins and Beauveria bassiana (BotaniGard Maxx)] only, and (3) a combination of blue and UV-B for 10 min immediately prior to miticide application. Integration of miticide application with prior deployment of blue and UV-B lights significantly increased the performance of miticide application. Results from this study supported the hypothesis. As a pest management approach, the integration of blue light (to elicit positive phototactic response) and UV-B (to elicit negative phototactic response) is believed to be of particular relevance to organic crop producers and/or to producers of crops for which limited numbers of miticides are registered.

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On the perception of leaf morphology and visible light by Tetranychus urticae Koch (Acariformes, Tetranychidae)

Cited by 3 publications

References 37 publications

Adaptation of an arthropod predator to a challenging environment is associated with a loss of a genome‐wide plastic transcriptional response

Adaptation of an arthropod predator to a challenging environment is associated with a loss of a genome‐wide plastic transcriptional response

Leaf trichome-mediated predator effects on the distribution of herbivorous mites within a kidney bean plant

Manipulation of Phototactic Responses by Two-Spotted Spider Mites to Improve Performance of Miticides

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