Journal of Chemical Ecology
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Brassica plant responses to mild herbivore stress elicited by two specialist insects from different feeding guilds.
These results have implications for the understanding of plasticity in plant defenses against herbivores and for the management of Brassica rapa in agroecosystems....
Terpenes tell different tales at different scales: glimpses into the Chemical Ecology of conifer - bark beetle - microbial interactions.
I approach this problem by focusing primarily on one chemical group, terpenes, by emphasizing the curvilinear and threshold-structured basis of most underlying relationships, and by focusing on the system's feedback structure, which can either buffer or amplify relationships across scales....
Sources of variation in cuticular hydrocarbons in the ant Formica exsecta.
We investigated if this variation was correlated or not with intrinsic (genetic relatedness), extrinsic (location, light, temperature), or social (queen number) factors. (Z)-9-Alkenes and n-alkanes showed different patterns of variance: island (location) explained only 0.2 % of the variation in (Z)-...
Differences in vole preference, secondary chemistry and nutrient levels between naturally regenerated and planted norway spruce seedlings.
We experimentally investigated vole preference for winter-dormant, naturally regenerated seedlings; spring-planted seedlings; or autumn-planted seedlings; and how preference corresponds with seedling chemistry. Voles showed the highest preference for autumn-planted seedlings and the second highest f...
Gypsy moth caterpillar feeding has only a marginal impact on phenolic compounds in old-growth black poplar.
We profiled the phenolics of old-growth black poplar (Populus nigra L.) and studied the response to gypsy moth (Lymantria dispar L.) herbivory in two separate field experiments. In a first experiment, foliar phenolics of 20 trees were monitored over 4 weeks after caterpillar infestation, and in a se...
Microbial detoxification of mycotoxins.
Mycotoxins are fungal natural products that are toxic to vertebrate animals including humans. Microbes have been identified that enzymatically convert aflatoxin, zearalenone, ochratoxin, patulin, fumonisin, deoxynivalenol, and T-2 toxin to less toxic products. Mycotoxin-degrading fungi and bacteria...
Human skin volatiles: a review.
We detail the different sampling techniques, each with its own set of advantages and disadvantages, which have been used for the collection of skin odors from different parts of the human body. We present the main skin volatile compounds found in these studies, with particular emphasis on the most f...
Allelopathic Exudates of Cogongrass (Imperata cylindrica): Implications for the Performance of Native Pine Savanna Plant Species in the Sout...
We conducted a greenhouse study to assess the effects of cogongrass (Imperata cylindrica) rhizochemicals on a suite of plants native to southeastern US pine savanna ecosystems. Our results indicated a possible allelopathic effect, although it varied by species. A ruderal grass (Andropogon arctatus)...
Root Distribution and Potential Interactions Between Allelopathic Rice, Sprangletop (Leptochloa spp.), and Barnyardgrass (Echinochloa crus-g...
Weed-suppressive rice cultivars hold promise for improved and more economical weed management in rice. Interactions between roots of rice and weeds are thought to be modulated by the weed-suppressive activity of some rice cultivars, but these phenomena are difficult to measure and not well understoo...
Headspace volatiles from 52 oak species advertise induction, species identity, and evolution, but not defense.
We surveyed the volatile profiles of wounded and unwounded leaves of 52 oak (Quercus) species. We used phylogenetic comparison and multivariate techniques to assess in what circumstances oak individuals advertised their species identity, evolutionary history, direct defenses, or damage. We found tha...