A5038082882- Insect and Pesticide Research
- Insect Pheromone Research and Control
- Forest Insect Ecology and Management
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Plant and animal studies
- Insect Pest Control Strategies
- Neurobiology and Insect Physiology Research
- Analytical Chemistry and Chromatography
- Asymmetric Synthesis and Catalysis
- Entomopathogenic Microorganisms in Pest Control
- Chemical synthesis and alkaloids
- Enzyme Catalysis and Immobilization
- Research on scale insects
- Synthetic Organic Chemistry Methods
- Hemiptera Insect Studies
- Plant biochemistry and biosynthesis
- Insect behavior and control techniques
- Inorganic and Organometallic Chemistry
- Synthesis and Biological Evaluation
- Molecular spectroscopy and chirality
- Trypanosoma species research and implications
- Chemical Synthesis and Analysis
- Insect Utilization and Effects
- Plant Surface Properties and Treatments
Linnaeus University
2014-2023
Plant & Food Research
2011-2020
Universität Hamburg
2010
Cargotec (Poland)
2006-2008
KTH Royal Institute of Technology
1993-2007
Swedish University of Agricultural Sciences
1996-2007
Uppsala University
2007
Estonian University of Life Sciences
2005
Universidade Federal de São Carlos
2002
Information Technology Institute
1997
Insects detect odors using an array of odorant receptors (ORs), which may expand through gene duplication. How and new functions evolve among related ORs within a species remain poorly investigated. We addressed this question by functionally characterizing from the Eurasian spruce bark beetle Ips typographus, in physiological behavioral responses to pheromones, volatiles host nonhost trees, fungal symbionts are well described. In contrast, knowledge OR function is restricted two detecting...
Laboratory screening bioassays and field trapping experiments of spotted wing drosophila flies, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), were conducted to determine the attractiveness 17 compounds as well compare attractant efficiency during peak fruit ripeness postharvest captures late in season. Compounds structurally related each fermentation products acetic acid, ethanol, ethyl acetate, 2-phenethyl alcohol screened for compared with a soap water control greenhouse cage...
Abstract Convergent evolution of semiochemical use in organisms from different Kingdoms is a rarely described phenomenon. Tree-killing bark beetles vector numerous symbiotic blue-stain fungi that help the colonize healthy trees. Here we show for first time some these are able to biosynthesize bicyclic ketals pheromones and other semiochemicals beetles. Volatile emissions five common beetle symbionts were investigated by gas chromatography-mass spectrometry. When grown on fresh Norway spruce...
Bark beetles kill apparently vigorous conifers during epidemics by means of pheromone-mediated aggregation. During non-endemic conditions the are limited to use trees with poor defense, like wind-thrown. To find olfactory cues that help distinguish between strong or weak we collected volatiles from bark surface healthy felled standing Picea abies trees. Furthermore, living were treated methyl jasmonate in order induce defense responses. Volatiles analyzed combined gas chromatography and...
Methyl salicylate (MeSA) is a volatile shown to act as an inducer of plant defense against pathogens and certain herbivores, particularly aphids. It has been have potential for aphid pest management, but knowledge on its mode action lacking, induced plant-mediated effects. This study investigated the effects exposing plants MeSA host searching, acceptance feeding behavior bird cherry-oat Rhopalosiphum padi. Barley were exposed 24 h, after which biological tested immediately exposure (Day 0),...
The semiochemical diversity hypothesis (SDH) states that interference with host-selection from non-host volatiles (NHV) is an important mechanism for associational resistance. Inhibition of bark beetle attraction to point sources by well established and might be a signal serving in also at the habitat scale. In forests dominated Norway spruce middle northern Europe (N Slovakia 2006 & 2007, SE Sweden 2007), we applied blend NHV verbenone, released dispensers fixed 2 6 m height forest edges...
N ‐Iodosuccinimide (NIS) in pure trifluoroacetic acid (TFA) offers a time‐efficient and general method for the iodination of wide range mono‐ disubstituted benzenes at room temperature, as demonstrated this paper. The starting materials were generally converted into mono‐iodinated products less than 16 hours without byproducts. A few deactivated substrates needed addition sulfuric to increase reaction rate. Another exception was methoxybenzenes that preferentially iodinated by NIS...
Conifer feeding bark beetles (Coleoptera, Curculionidae, Scolytinae) pose a serious economic threat to forest production. Volatiles released by non-host angiosperm plants (so called volatiles, NHV) have been shown reduce the risk of attack many beetle species, including European spruce beetle, Ips typographus. However, most active blend for I. typographus, containing three green leaf volatiles (GLVs) in addition key compounds trans-conophthorin (tC) and verbenone, has considered too...
(+)-Limonene (d-limonene) and related monoterpenes show chemopreventive activity against rodent mammary carcinoma inhibit the growth of cancer cells in vitro. One suggested mechanism for anti-tumorigenic effect (+)-limonene is inhibition post-translational isoprenylation controlling Ras oncoproteins. We have here examined inhibitory effects other on PANC-1 pancreas (carrying a K-ras mutation) 12V-H-ras-transformed rat fibroblasts. (+)-and (−)-perillyl alcohol, 7-methyl-perillyl oxide...
Eurasian spruce bark beetles (Ips typographus) use both attractant and anti-attractant semiochemicals to find suitable mature host trees. Trans-4-thujanol is abundant in young, unsuitable Electrophysiological studies have demonstrated its high activity levels, but field data are lacking.Enantioselective GC-MS analysis showed that only (1R,4S)-(+)-trans-4-thujanol was present Norway volatiles. In a factorial design field-trapping experiment, trans-4-thujanol alone not attractive Ips...
Three nepetalactones were isolated from Nepeta racemosa (mussinii) by traditional methods. An improved method was developed to isolate N. faassénii. epimerization procedure used prepare the fourth 7S-nepetalactone diastereomer. The cis-fused nepetalactols prepared reduction of corresponding nepetalactones, while trans-fused unstable and found undergo ring-opening reactions yielding iridodials. characterizations structural assignments means NMR agree with quantum chemical density functional...
Abstract Pheromone gland extracts from calling female Plodia interpunctella contained at least seven compounds that consistently elicited electroantennographic responses male antennae upon gas chromatographic analysis. Three of these were found to be the previously identified constituents, i.e., ( Z,E )‐9,12‐tetradecadienyl acetate Z 9,E12‐14:OAc), )‐9,12‐tetradecadienal 9,E12‐14:Ald) and )‐9,12‐tetradecadienol 9,E12‐14:OH). A fourth EAD‐active compound was as )‐9‐tetradecenyl 9‐14:OAc). The...