Author

G. Petschenka

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Ecology· 4 Evolutionary Biology· 3 Plant Biology· 1

Signature Assays, Organisms & Methods

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Approach:experimental assay· 6 Research Focus:host-pathogen & immune response· 4 Organism:Drosophila· 3 Approach:statistical model· 3 Research Focus:cell type annotation· 2 Research Focus:development & morphogenesis· 2 Assay:bulk RNA-seq· 1 Research Focus:chromatin & epigenetic regulation· 1

Frequent Co-Authors

A. Betz· 3 shared A. D. Talsma· 2 shared A. Vilcinskas· 2 shared B. P. Roland· 2 shared J. Peng· 2 shared L. Tenbusch· 2 shared L. Yang· 2 shared P. Andolfatto· 2 shared

Activity by Year

2019-2024 · peak 2/yr

Co-Author Collaboration Network

10 top collaborators · 23 mutual co-author links

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3 shared papersEcology

A. Betz

Mutual co-authors in cluster

Author profile →

8 papers

Recent·Most cited

The neonicotinoid acetamiprid is highly toxic to wild non-target insects

J. E. Sedlmeier, I. Grass, P. Bendalam, B. Hoeglinger, F. Walker, D. Gerhard, H.-P. Piepho, C. A. Bruehl, G. Petschenka

This study shows that the neonicotinoid acetamiprid is highly toxic to plant bugs, with effects up to 10,000 times greater than on honeybees and sex-specific differences in sensitivity.

bioRxiv · Apr 11, 2024 · PreprintEcology

Monarchs sabotage milkweed to acquire toxins, not to disarm plant defence

A. Betz, R. Bischoff, G. Petschenka

This study shows monarch caterpillars sabotage milkweed to consume toxic latex for sequestration, not to avoid plant defense, contrasting with non-sequestering crow caterpillars.

bioRxiv · Mar 20, 2023 · PreprintEcology

Predatory fireflies and their toxic firefly prey have evolved distinct toxin resistancestrategies.

L. Yang, F. Borne, A. Betz, M. L. Aardema, Y. Zhen, J. Peng, M. Wu, R. Visconti, B. P. Roland, A. D. Talsma, M. Palladino, G. Petschenka, P. Andolfatto

This study shows that predatory fireflies and their toxic prey have evolved distinct toxin resistance strategies through gene duplication and neofunctionalization.

bioRxiv · Mar 8, 2023Evolutionary Biology

Spatial metabolomics reveal divergent cardenolide processing in the monarch butterfly (Danaus plexippus) and the common crow (Euploea core)

D. Dreisbach, D. Bhandari, A. Betz, L. Tenbusch, A. Vilcinskas, B. Spengler, G. Petschenka

This study uses mass spectrometry imaging to compare cardenolide distribution in monarch and common crow caterpillars, revealing differences in toxin sequestration and degradation.

bioRxiv · Jun 2, 2022Ecology

Dietary cardenolides enhance growth and change the direction of the fecundity-longevity trade-off in milkweed bugs (Heteroptera: Lygaeinae)

P. Pokharel, A. Steppuhn, G. Petschenka

This study shows that dietary cardenolides enhance growth and alter the fecundity-longevity trade-off in milkweed bugs, suggesting sequestered toxins can increase fitness in specialized species.

bioRxiv · Mar 29, 2021Ecology

Predation drives specialized host plant associations in preadapted milkweed bugs (Heteroptera: Lygaeinae)

G. Petschenka, R. Halitschke, A. Roth, S. Stiehler, L. Tenbusch, T. Züst, C. Hartwig, J. F. Moreno Gamez, R. Trusch, J. Deckert, K. Chalusova, A. Vilcinskas, A. Exnerova

The paper shows that predation pressure drives host plant specialization in milkweed bugs by selecting for toxin sequestration abilities, even when new toxins are not exploited.

bioRxiv · Jun 16, 2020 · PreprintEvolutionary Biology

Rapid and independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

T. Züst, S. R. Strickler, A. F. Powell, M. E. Mabry, H. An, M. Mirzaei, T. York, C. K. Holland, P. Kumar, M. Erb, G. Petschenka, J.-M. Gomez, F. Perfectti, C. Mueller, C. Pires, , G. Jander

The paper examines the evolution of chemical defenses in Erysimum plants, finding that ancestral and novel defenses evolved independently without trade-offs.

bioRxiv · Sep 8, 2019Plant Biology

Adaptive substitutions underlying cardiac glycoside insensitivity in insects exhibit epistasis in vivo.

A. M. Taverner, L. Yang, Z. J. Barile, L. Becky, J. Peng, A. Pinharanda, A. Rao, B. P. Roland, A. D. Talsma, D. Wei, G. Petschenka, M. J. Palladino, P. Andolfatto

The paper investigates how adaptive substitutions in Na+,K+-ATPase affect cardiac glycoside insensitivity in insects, revealing epistatic interactions that constrain evolution.

bioRxiv · May 21, 2019Evolutionary Biology