Inactivation and mutagenesis by phototoxins usingEscherichia coli strains differing in sensitivity to near- and far-ultraviolet light.

abstract：:Cardenolides are classically studied steroidal defenses in chemical ecology and plant-herbivore coevolution. Although milkweed plants (Asclepias spp.) produce up to 200 structurally different cardenolides, all compounds seemingly share the same well-characterized mode of action, inhibition of the ubiquitous Na+/K+ ATP...

journal_title：Journal of chemical ecology

authors： Züst T,Petschenka G,Hastings AP,Agrawal AA

更新日期：2019-01-01 00:00:00

abstract：:The mating behaviour of the signal crayfish, Pacifastacus leniusculus (Dana), has been categorised into seven distinct stages: orientation; contact; seizure; turning; mounting; spermatophore deposition; and dismounting. These categories were used in the development of a bioassay to test whether mature females release ...

journal_title：Journal of chemical ecology

authors： Stebbing PD,Bentley MG,Watson GJ

更新日期：2003-02-01 00:00:00

abstract：:The raspberry cane midge, Resseliella theobaldi, is a widespread pest of cultivated red raspberry in Europe. Pheromone-baited traps could provide a much-needed, accurate means to monitor the pest. Volatiles collected separately from virgin female and male midges were analyzed by gas chromatography (GC) coupled to mass...

journal_title：Journal of chemical ecology

authors： Hall DR,Farman DI,Cross JV,Pope TW,Ando T,Yamamoto M

更新日期：2009-02-01 00:00:00

abstract：:In this study we examined the role of sorghum flavonoids in providing resistance against corn leaf aphid (CLA) Rhopalosiphum maidis. In sorghum, accumulation of these flavonoids is regulated by a MYB transcription factor, yellow seed1 (y1). Functional y1 alleles accumulate 3-deoxyflavonoids (3-DFs) and 3-deoxyanthocya...

journal_title：Journal of chemical ecology

authors： Kariyat RR,Gaffoor I,Sattar S,Dixon CW,Frock N,Moen J,De Moraes CM,Mescher MC,Thompson GA,Chopra S

更新日期：2019-06-01 00:00:00

abstract：:The quinolizidine alkaloids (QA) of golden rain,Laburnum anagyroides, and those of phytophagous insects associated with the plant, as well as of parasitoids of the latter, were analyzed by capillary GLC and GLC-MS. The alkaloid content in samples of vegetative plant parts was high at the beginning of the season, then ...

journal_title：Journal of chemical ecology

authors： Szentesi A,Wink M

更新日期：1991-08-01 00:00:00

abstract：:Steroidal glycoalkaloids, found in species of the Solanaceae, elicit bursting activity in galeal and tarsal chemosensilla of adult Colorado potato beetles. The effect has an average latency of 6-12 sec, depending on the sensillum/alkaloid combination. A 20-sec alkaloid treatment is often suffficient to render galeal s...

journal_title：Journal of chemical ecology

authors： Mitchell BK,Harrison GD

更新日期：1985-01-01 00:00:00

abstract：:The evolution of male moth responses to pheromone blends may be constrained by a trade-off between two response traits: sensitivity and breadth of response. Population genetic simulations predict that if sensitivity and breadth of response are negatively correlated (i.e., a trade-off exists), then selection will favor...

journal_title：Journal of chemical ecology

authors： Hemmann DJ,Allison JD,Haynes KF

更新日期：2008-11-01 00:00:00

abstract：:Termite societies are abundant in the tropics, and are therefore exposed to multiple enemies and predators, especially during foraging activity. Soldiers constitute a specialized defensive caste, although workers also participate in this process, and even display suicidal behavior, which is the case with the species N...

journal_title：Journal of chemical ecology

authors： Costa-Leonardo AM,da Silva IB,Janei V,Esteves FG,Dos Santos-Pinto JRA,Palma MS

更新日期：2019-09-01 00:00:00

abstract：:The concentration of leaf mono- and sesquiterpenes is greater in nitrate-limited than in nitrate-richHeterotheca subaxillaris plants and is highest in young leaves and declines with leaf age. To determine whether rates of volatile terpene synthesis and/or loss vary with nitrate availability and leaf age, incorporation...

journal_title：Journal of chemical ecology

authors： Mihaliak CA,Lincoln DE

更新日期：1989-05-01 00:00:00

abstract：:We report the identification, synthesis, and field bioassays of a volatile, male-produced aggregation pheromone of a long-horned beetle, the banded alder borer, Rosalia funebris Mots. Headspace collections from males contained a major male-specific compound, (Z)-3-decenyl (E)-2-hexenoate, and several minor components,...

journal_title：Journal of chemical ecology

authors： Ray AM,Millar JG,McElfresh JS,Swift IP,Barbour JD,Hanks LM

更新日期：2009-01-01 00:00:00

abstract：:Potato cyst nematodes (PCNs) are a major pest of solanaceous crops such as potatoes, tomatoes, and eggplants and have been widely studied over the last 30 years, with the majority of earlier studies focusing on the identification of natural hatching factors. As a novel approach, we focused instead on chemicals involve...

journal_title：Journal of chemical ecology

authors： Farnier K,Bengtsson M,Becher PG,Witzell J,Witzgall P,Manduríc S

更新日期：2012-06-01 00:00:00

abstract：:Information processing in the olfactory pathway underlying the perception of semiochemicals by insects is discussed. Both the chemical message for mates and the message for food consist of blends of chemicals. Olfactory receptors in an insect species are tuned to the detection of those compounds which comprise such ch...

journal_title：Journal of chemical ecology

authors： Visser JH,de Jong R

更新日期：1988-11-01 00:00:00

abstract：:A compiled program, JCE-REFS.EXE (coded in the QuickBASIC language), for use on IBM-compatible personal computers is described. The program converts a DOS text file of current B-I-T-S (BIOSIS Information Transfer System) or BIOSIS Previews references into a DOS file of citations, including abstracts, in a general styl...

journal_title：Journal of chemical ecology

authors： Byers JA

更新日期：1992-09-01 00:00:00

abstract：:Behavioral bioassays have shown that volatile oviposition-deterring chemicals are present in the frass of Ostrinia zealis, O. furnacalis, O. scapulalis, and O. latipennis larvae fed on an artificial diet. These chemicals were extractable with acetone, and could be partitioned into a polar lipid fraction. This fraction...

journal_title：Journal of chemical ecology

authors： Li G,Ishikawa Y

更新日期：2004-07-01 00:00:00

abstract：:Rapid changes in the Earth's atmosphere and climate associated with human activity can have significant impacts on agriculture including livestock production. CO2 concentration has risen from the industrial revolution to the current time, and is expected to continue to rise. Climatic changes alter physiological proces...

journal_title：Journal of chemical ecology

authors： Cook D,Gardner DR,Pfister JA,Stonecipher CA,Robins JG,Morgan JA

更新日期：2017-03-01 00:00:00

abstract：:Yeast-insect interactions have been well characterized in drosophilid flies, but not in tephritid fruit flies, which include many highly polyphagous pest species that attack ripening fruits. Using the Queensland fruit fly (Bactrocera tryoni) as our model tephritid species, we identified yeast species present in the gu...

journal_title：Journal of chemical ecology

authors： Piper AM,Farnier K,Linder T,Speight R,Cunningham JP

更新日期：2017-09-01 00:00:00

abstract：:The plant secondary metabolite papyriferic acid (PA) deters browsing by snowshoe hares (Lepus americanus) on the juvenile developmental stage of the Alaska paper birch (Betula neoalaskana). However, the physiological mechanism that reduces browsing remains unknown. We used pharmacological assays and molecular modeling...

journal_title：Journal of chemical ecology

authors： Forbey JS,Pu X,Xu D,Kielland K,Bryant J

更新日期：2011-12-01 00:00:00

abstract：:The significance of the geminal dimethyl group at C-6 of (+)-trans-veibenyl acetate (Ib), a sex pheromone mimic of the American cockroach, was investigated. Our interest was first directed to eliminating either methyl group of the geminal dimethyl group. Consequently, alcohols (IIIa and IVa) possessing a monomethyl gr...

journal_title：Journal of chemical ecology

authors： Manabe S,Takayanagi H,Nishino C

更新日期：1983-04-01 00:00:00

abstract：:Quinolizidine alkaloid contents of leaves and seeds ofLupinus argenteus (Fabaceae) collected from seven different localities near Gothic, Colorado were determined by capillary GLC. Differences in alkaloid levels between sites are substantial and alkaloid quantity decreases as elevation increases. Leaves at the lowest ...

journal_title：Journal of chemical ecology

authors： Carey DB,Wink M

更新日期：1994-04-01 00:00:00

abstract：:Four species of Acridoidea were fed on wheat leaves with and without the condensed tannin, quebracho. In no case was it deleterious to survival and growth at levels below about 10% dry weight on the food. Similarly, consumption, digestibility, and utilization of food were unaffected at up to 10% dry weight. At higher ...

journal_title：Journal of chemical ecology

authors： Bernays EA,Chamberlain DJ,Leather EM

更新日期：1981-03-01 00:00:00

abstract：:Brassica nigra plants, characterized by high levels of sinigrin, and artificial aphid diets to which sinigrin was selectively added were used to rear the crucifer specialist, Brevicoryne brassicae. Aphids were provided as a food source to two species of polyphagous ladybird, Adalia bipunctata and Coccinella septempunc...

journal_title：Journal of chemical ecology

authors： Pratt C,Pope TW,Powell G,Rossiter JT

更新日期：2008-03-01 00:00:00

abstract：:We investigated the plume structure of a piezo-electric sprayer system, set up to release ethanol in a wind tunnel, using a fast response mini-photoionizaton detector. We recorded the plume structure of four different piezo-sprayer configurations: the sprayer alone; with a 1.6-mm steel mesh shield; with a 3.2-mm steel...

journal_title：Journal of chemical ecology

authors： Girling RD,Cardé RT

更新日期：2007-10-01 00:00:00

abstract：:The relative activities of 10 glucosinolates in stimulating oviposition byP. rapae andP. napi oleracea were compared under the same conditions. When tested at the same concentration, the structurally different glucosinolates stimulated both butterfly species to widely varying degrees. In most cases,P. rapae was more s...

journal_title：Journal of chemical ecology

authors： Huang X,Renwick JA

更新日期：1994-05-01 00:00:00

abstract：:Two components, (Z)-5- and (Z)-7-tetradecenyl acetates, in the sex pheromone gland of aPlanotortrix excessana sibling species, were found to vary continuously from a ratio of 3∶97 to 71∶29 in individual female moths reared from wild larvae collected around New Zealand. Two laboratory colonies were established from pop...

journal_title：Journal of chemical ecology

authors： Foster SP,Clearwater JR,Muggleston SJ

更新日期：1989-02-01 00:00:00

abstract：:The alfalfa seed chalcid (ASC),Bruchophagus roddi, is a monophagous pest of alfalfa that parasitizes developing seeds. To further understand the olfactory basis of host-plant recognition by ASCs, we recorded electroantennograms (EAGs) from females and males to 39 volatiles from both alfalfa and red clover. The chemore...

journal_title：Journal of chemical ecology

authors： Light DM,Kamm JA,Buttery RG

更新日期：1992-03-01 00:00:00

abstract：:Moths belonging to the speciesSpodoptera sunia have been recognized as a new pest of cotton in Central America. By means of electro-physiologic investigations, solid sample injection gas chromatography, and combined gas chromatography-mass spectrometry, (Z)-9-tetradecenyl acetate, (9Z,12E)-9,12-tetradecadienyl acetate...

journal_title：Journal of chemical ecology

authors： Bestmann HJ,Attygalle AB,Schwarz J,Vostrowsky O,Knauf W

更新日期：1988-02-01 00:00:00

abstract：:AdultMaladera matrida Argaman (Coleoptera: Scarabaeidae: Melolonthinae) males emerge from soil for an active period at dusk, a few minutes before the females. Adults are found during most of the active hours on the foliage in aggregations composed of an equal sex ratio. The mechanism of aggregation behavior ofM. matri...

journal_title：Journal of chemical ecology

authors： Harari AR,Ben-Yakir D,Rosen D

更新日期：1994-02-01 00:00:00

abstract：:Calling behavior and pheromone emission by virgin femaleE. loftini moths were investigated in laboratory experiments. Calling peaked during the last three hours of the night. Three-day-old moths called more than older or younger moths and began calling earlier in the night than younger moths. Female emissions were col...

journal_title：Journal of chemical ecology

authors： Robacker DC,Johnson KJ

更新日期：1989-01-01 00:00:00

abstract：:Many grass species are symbiotic with systemic, vertically-transmitted, asymptomatic Epichloë endophytic fungi. These fungi often produce alkaloids that defend the host against herbivores. We studied how environmental variables affect alkaloids in endophyte-infected tall fescue (Schedonorus phoenix) from three Norther...

journal_title：Journal of chemical ecology

authors： Helander M,Phillips T,Faeth SH,Bush LP,McCulley R,Saloniemi I,Saikkonen K

更新日期：2016-02-01 00:00:00

abstract：:The chemical components of tarbush (Flourensia cernua) leaves were fractionated by extracting successively with hexanes, diethyl ether, and ethanol. Volatile profiles of each fraction were identified by using GC-MS. The hexanes fraction contained mostly monoterpenoids, while the ethanol fraction volatiles were primari...

journal_title：Journal of chemical ecology

authors： Tellez M,Estell R,Fredrickson E,Powell J,Wedge D,Schrader K,Kobaisy M

更新日期：2001-11-01 00:00:00