Results 21 to 30 of about 313 (129)

Genetic Variation in Chemical Defence Affects Protection of an Herbivorous Insect Against Predation [PDF]

Molecular Ecology, Volume 35, Issue 9, May 2026.
ABSTRACT Genetic variation contributes to intraspecific differences in the chemical defence in many insect species, yet the underlying genetic mechanisms remain poorly understood. The horseradish flea beetle, Phyllotreta armoraciae, sequesters glucosinolates from its horseradish host plant and activates them using endogenous myrosinase enzymes.
Johannes Körnig, Kris Ortizo, Christian Woehle, Robert Greenhalgh, Holger Schielzeth, Bruno Huettel, David G. Heckel, M. Denise Dearing, Martin Kaltenpoth, Franziska Beran   +9 more
wiley   +2 more sources

Glucosinolate hydrolysis products suppress entomopathogenic nematodes in vitro but do not protect sequestering flea beetle larvae in vivo [PDF]

Pest Management Science, Volume 82, Issue 4, Page 3603-3612, April 2026.
The flea beetle's glucosinolate‐based chemical defense fails to protect larvae from nematode infection. However, the defense inhibits the nematode's symbiotic bacteria, thereby potentially impairing nematode reproduction and biocontrol success. Abstract BACKGROUND The efficacy of entomopathogenic nematodes (EPNs) in the biological control of insect ...
Johannes Körnig, Vojtech Beneš, Christin Manthey, Michael Reichelt, Grit Kunert, Christian Paetz, Johanna Kutzschbach, Paula Lampe, Martin Kaltenpoth, Franziska Beran   +9 more
wiley   +2 more sources

Phyllotreta striolata flea beetles use host plant defense compounds to create their own glucosinolate-myrosinase system. [PDF]

Proc Natl Acad Sci U S A, 2014
Significance Associations of plants and herbivores are regarded as the result of coevolution, which has produced an astonishing diversity of plant defenses and corresponding insect counteradaptations. We focus on the leaf beetle Phyllotreta striolata , which is adapted to ...
Beran F, Pauchet Y, Kunert G, Reichelt M, Wielsch N, Vogel H, Reinecke A, Svatoš A, Mewis I, Schmid D, Ramasamy S, Ulrichs C, Hansson BS, Gershenzon J, Heckel DG.   +14 more
europepmc   +6 more sources

New findings of terrestrial arthropods from the Azorean Islands [PDF]

Biodiversity Data Journal
The knowledge on taxonomic diversity of arthropods is key to better understanding the biodiversity patterns and processes and guiding sustainable conservation strategies and practices. In the Azores, terrestrial arthropods are relatively well-inventoried
Mário Boieiro, Zsófia Varga-Szilay, Ricardo Costa, Luis Crespo, Abrão Leite, Raúl Oliveira, Gabor Pozsgai, Carla Rego, Hugo Calado, Mário Teixeira, David Lopes, António Soares, Paulo Borges   +12 more
doaj   +4 more sources

Mycoviruses as Biocontrol Agents: Potential Applications for Managing Pests and Diseases of Oilseed Rape (Brassica napus) [PDF]

Physiologia Plantarum, Volume 178, Issue 4, July/August 2026.
ABSTRACT Oilseed rape (Brassica napus) production faces a wide range of biotic threats. Pests typically pose a greater threat than diseases to oilseed rape, yet both vary considerably across the major cultivating regions. Management strategies often rely heavily on the use of chemical pesticides which may have harmful effects on the environment, thus ...
Harry J. Aston, Robert H. A. Coutts, Yong‐Ju Huang, Ioly Kotta‐Loizou   +3 more
wiley   +2 more sources

Effects of diversified volatile profiles on olfactory orientation of flea beetles Phyllotreta spp. and the diamondback moth Plutella xylostella [PDF]

Plant Biology, Volume 27, Issue 5, Page 883-890, August 2025.
Diversifying the crop volatile organic compound profile can alter pest orientation: flea beetles were less attracted to chemical cues of the cabbage–faba bean mix than to those from cabbage alone, while diamondback moths remained equally attracted to both cues.
J. K. Mäkinen, S. Saussure, H. Ruhanen, E. Räty, J. D. Blande   +4 more
wiley   +2 more sources

The value of hybrid and non‐native ash for the conservation of ash specialists is limited following late stages of emerald ash borer invasion

Agricultural and Forest Entomology, Volume 24, Issue 3, Page 355-370, August 2022., 2022
Abstract Widespread mortality of native North American ash caused by emerald ash borer (EAB; Agrilus planipennis Fairmaire) threatens native arthropod biodiversity, but hybrid ash populations with resistance to EAB may serve a role in supporting threatened communities of arthropods in managed landscapes impacted by EAB.
Kayla I. Perry, Christopher B. Riley, Fan Fan, James Radl, Daniel A. Herms, Mary M. Gardiner   +5 more
wiley   +1 more source

Mechanisms relevant to the enhanced virulence of a dihydroxynaphthalene-melanin metabolically engineered entomopathogen. [PDF]

PLoS ONE, 2014
The entomopathogenic fungus Metarhizium anisopliae MA05-169 is a transformant strain that has been metabolically engineered to express dihydroxynaphthalene-melanin biosynthesis genes.
Min-Nan Tseng, Chia-Ling Chung, Shean-Shong Tzean   +2 more
doaj   +1 more source

Lack of Genetic Structure Among Populations of Striped Flea Beetle Phyllotreta striolata (Coleoptera: Chrysomelidae) Across Southern China

Frontiers in Ecology and Evolution, 2022
The striped flea beetle (SFB) Phyllotreta striolata (Fabricius) (Coleoptera: Chrysomelidae) is a major pest of cruciferous vegetables in southern China. The population diversity and genetic structure of SFB are unknown.
Qian Li, Guang-Mei Li, Yong-Li Zheng, Shu-Jun Wei   +3 more
doaj   +1 more source

Transcriptional Variation in Glucosinolate Biosynthetic Genes and Inducible Responses to Aphid Herbivory on Field-Grown Arabidopsis thaliana

Frontiers in Genetics, 2019
Recently, increasing attempts have been made to understand how plant genes function in natura. In this context, transcriptional profiles represent plant physiological status in response to environmental stimuli.
Yasuhiro Sato, Yasuhiro Sato, Ayumi Tezuka, Makoto Kashima, Ayumi Deguchi, Ayumi Deguchi, Rie Shimizu-Inatsugi, Misako Yamazaki, Kentaro K. Shimizu, Kentaro K. Shimizu, Atsushi J. Nagano   +10 more
doaj   +1 more source