Increased Susceptibility to Aphids of Flowering Wheat Plants Exposed to Low Temperatures

Lacoste, C.; Nansen, Christian; Thompson, Sally; Moir-Barnetson, Louis; Mian, Ajmal; McNee, Matthew Eden; Flower, Ken

doi:10.1093/ee/nvv024

Cited by 17 publications

(15 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…, Lacoste et al. ). Some evidence suggests that legacies within plants can alter the outcome of future herbivory events: Orrock (), for example, demonstrated that plants exposed to non‐consumptive cues of herbivory risk (i.e., snail mucus) as seeds were less palatable to snails than plants that grew from seeds that were not exposed to cues associated with herbivory.…”

Section: Discussionmentioning

confidence: 99%

“…) and, in adult plants, cold stress can alter plant defense against herbivores (Lacoste et al. ). Understanding plant responses to cold stress is particularly relevant given projections of colder soil temperatures as snow depth declines in the Northern Hemisphere (Kreyling , Williams et al.…”

Section: Discussionmentioning

confidence: 99%

“…Although evidence suggests that, in mature plants, negative effects of cold stress can manifest up to a year after extreme cold events (Kreyling , Lacoste et al. ), it remains unclear whether the sub‐lethal effects of cold stress experienced by seeds can persist after germination. Understanding how cold stress experienced by seeds affects the performance of subsequent life stages (e.g., seedlings) may help explain the considerable intra‐ and interspecific variation often observed in seedling survival (e.g., Nicotra et al.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Past freeze–thaw events on Pinus seeds increase seedling herbivory

2017

View full text Add to dashboard Cite

Citation: Connolly, B. M., P. W. Guiden, and J. L. Orrock. 2017. Past freeze-thaw events on Pinus seeds increase seedling herbivory. Ecosphere 8(3):e01748. 10.1002/ecs2.1748Abstract. Seed and seedling survival are key components of plant population persistence. Although freeze-thaw events are experienced by many dispersed seeds in temperate ecosystems, it is unclear whether freeze-thaw stresses experienced by seeds can alter seedling susceptibility to herbivores during the growing season. We evaluated how freezing stress (temperature at À6°C for 6 h) experienced by seeds of two conifer species (Pinus resinosa and Pinus strobus) affects seedling herbivory by a generalist herbivore (Spodoptera exigua). For both Pinus species, herbivores consumed twofold more seedling biomass from freeze-thaw-treated plants than seedlings from the constant temperature treatment. Herbivores grew 66% faster when feeding on freeze-thaw P. resinosa seedlings relative to controls, but herbivore growth rate did not differ between treatments for P. strobus. Our results show that the thermal environment experienced by a seed can have subsequent effects on plant-herbivore interactions, suggesting that (1) early ontogenetic stress could be a cryptic, yet unappreciated, determinant of future herbivory and (2) increasingly frequent cold events, such as those projected under winter climate change, may amplify seedling herbivory and reduce recruitment in managed and natural conifer forests.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Past freeze–thaw events on Pinus seeds increase seedling herbivory

2017

View full text Add to dashboard Cite

show abstract

“…In a recent study of cicada sound production, hyperspectral imaging of forewing costae demonstrated significant differences between mute cicadas and those producing sound by the tymbal (78). Finally, behavioral preference studies with spider mites (Tetranychus cinnabarinus) (98) and aphids (R. padi ) (66) showed how nutrient composition of crop leaves could explain host choices and that reflectance features could be used to predict the choices made by these herbivores.…”

Section: Insect Behaviormentioning

confidence: 98%

“…For instance, greenbug (Schizaphis graminum) infestations in wheat (Triticum aestivum) caused a decrease in reflectance in the UV-light portion of the spectrum compared with reflectance from noninfested control leaves, whereas stress induced by Russian wheat aphid (Diuraphis noxia) herbivory caused an increase in reflectance (116). In a study of wheat plants exposed to experimental frost stress, levels of reflectance decreased in response to the abiotic stress, which was further associated with increased potassium content in wheat plants and increased suitability of frosted wheat plants as host to bird cherry-oat aphids (Rhopalosiphum padi ) (66). These examples highlight important nonlinear relationships between crop response to stressors and leaf reflectance, and they may be associated with a range of (over-)compensatory mechanisms by plants exposed to abiotic and biotic stressors (134).…”

Section: Classification Of Remote Sensing Datamentioning

confidence: 99%

Remote Sensing and Reflectance Profiling in Entomology

Nansen

Elliott

2016

Annu. Rev. Entomol.

View full text Add to dashboard Cite

Remote sensing describes the characterization of the status of objects and/or the classification of their identity based on a combination of spectral features extracted from reflectance or transmission profiles of radiometric energy. Remote sensing can be benchtop based, and therefore acquired at a high spatial resolution, or airborne at lower spatial resolution to cover large areas. Despite important challenges, airborne remote sensing technologies will undoubtedly be of major importance in optimized management of agricultural systems in the twenty-first century. Benchtop remote sensing applications are becoming important in insect systematics and in phenomics studies of insect behavior and physiology. This review highlights how remote sensing influences entomological research by enabling scientists to nondestructively monitor how individual insects respond to treatments and ambient conditions. Furthermore, novel remote sensing technologies are creating intriguing interdisciplinary bridges between entomology and disciplines such as informatics and electrical engineering.

show abstract

Early infestations by arthropod pests induce unique changes in plant compositional traits and leaf reflectance

Nansen

Murdock

Purington

et al. 2021

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND: With steadily growing interest in the use of remote-sensing technologies to detect and diagnose pest infestations in crops, it is important to investigate and characterize possible associations between crop leaf reflectance and unique pest-induced changes in plant compositional traits. Accordingly, we compiled plant compositional traits from chrysanthemum and gerbera plants in four treatments: non-infested, or infested with mites, thrips or whiteflies, and we acquired hyperspectral leaf reflectance data from the same plants over time (0-14 days).RESULTS: Plant compositional traits changed significantly in response to arthropod infestations, and individual chrysanthemum and gerbera plants were classified with 78% and 80% accuracy, respectively. Based on leaf reflectance, individual plants from the four treatments were classified with moderate accuracy levels of 76% (gerbera) and 73% (chrysanthemum) but with a clear distinction between non-infested and infested plants. Accurate and consistent diagnosis of biotic stressors was not achieved.CONCLUSION: To our knowledge, this is the first study in which infestations by multiple economically important arthropod pests are directly compared and associated with leaf reflectance responses and changes in plant compositional traits. It is important to highlight that imposed stress levels were low, period of infestation was short, and hyperspectral remote-sensing data were acquired at four time points with analyses based on large data sets (3826 leaf reflectance profiles for chrysanthemum and 4041 for gerbera). This study provides novel insight into crop responses to different biotic stressors and into possible associations between plant compositional traits and hyperspectral leaf reflectance data acquired from crop leaves.

show abstract

Increased Susceptibility to Aphids of Flowering Wheat Plants Exposed to Low Temperatures

Cited by 17 publications

References 52 publications

Past freeze–thaw events on Pinus seeds increase seedling herbivory

Past freeze–thaw events on Pinus seeds increase seedling herbivory

Remote Sensing and Reflectance Profiling in Entomology

Early infestations by arthropod pests induce unique changes in plant compositional traits and leaf reflectance

Contact Info

Product

Resources

About