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Brief exposure to a diverse range of environmental stress enhances stress tolerance in the polyextremophilic Antarctic midge, Belgica antarctica

View ORCID ProfileJ. D. Gantz, B. N. Philip, N. M. Teets, Y. Kawarasaki, L. J. Potts, D. E. Spacht, J. B. Benoit, D. L. Denlinger, R. E Lee
doi: https://doi.org/10.1101/2020.01.01.887414
J. D. Gantz
1Department of Biology and Health Sciences, Hendrix College, Conway, AR USA
2Department of Biology, Miami University, Oxford, OH 45056, USA
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  • ORCID record for J. D. Gantz
  • For correspondence: gantz@hendrix.edu
B. N. Philip
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N. M. Teets
3Department of Entomology, University of Kentucky, Lexington, KY USA
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Y. Kawarasaki
4Department of Biology, Gustavus Adolphus College, Saint Peter, MN USA
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L. J. Potts
2Department of Biology, Miami University, Oxford, OH 45056, USA
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D. E. Spacht
5Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43210, USA
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J. B. Benoit
6Department of Biological Sciences, University of Cincinnati, Cincinnati, OH, USA
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D. L. Denlinger
5Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH 43210, USA
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R. E Lee
2Department of Biology, Miami University, Oxford, OH 45056, USA
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Abstract

Insects use rapid acclimation to enhance their tolerance of abiotic stresses within minutes to hours. These responses are critical adaptations for insects and other small ectotherms to tolerate drastic changes in temperature, hydration, or other factors that can fluctuate precipitously with ambient conditions or as a result of behavior. Rapid cold-hardening, where insects use brief exposure to modest chilling as a cue to enhance their cold tolerance, is the most thoroughly-studied of these responses and relatively little is known about rapid acclimation that is either triggered by or enhances tolerance of other abiotic stresses. Here, we used larvae of the Antarctic midge, Belgica antarctica, a polar extremophile that routinely experiences numerous stresses in nature, to investigate how 2 h exposure to modest environmental stresses affect stress tolerance in insects. Brief pretreatment by various stresses, including hyperosmotic challenge, hypoosmotic challenge, acidity, basicity, and UV irradiation enhanced stress tolerance in B. antarctica larvae relative to untreated controls. These results indicate that numerous environmental cues can trigger rapid acclimation in insects and that these responses can enhance tolerance of multiple stresses.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted January 02, 2020.
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Brief exposure to a diverse range of environmental stress enhances stress tolerance in the polyextremophilic Antarctic midge, Belgica antarctica
J. D. Gantz, B. N. Philip, N. M. Teets, Y. Kawarasaki, L. J. Potts, D. E. Spacht, J. B. Benoit, D. L. Denlinger, R. E Lee
bioRxiv 2020.01.01.887414; doi: https://doi.org/10.1101/2020.01.01.887414
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Brief exposure to a diverse range of environmental stress enhances stress tolerance in the polyextremophilic Antarctic midge, Belgica antarctica
J. D. Gantz, B. N. Philip, N. M. Teets, Y. Kawarasaki, L. J. Potts, D. E. Spacht, J. B. Benoit, D. L. Denlinger, R. E Lee
bioRxiv 2020.01.01.887414; doi: https://doi.org/10.1101/2020.01.01.887414

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