Journal of Chemical Ecology

Journal: Journal of Chemical Ecology

Abbreviation

J. Chem. Ecol.

Publisher

Springer

ISSN

0098-0331
1573-1561

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Publications1 - 10 of 26

Phytoplasma Infection of Cranberry Affects Development and Oviposition, but Not Host-Plant Selection, of the Insect Vector Limotettix vaccinii
Pradit, Nakorn; Mescher, Mark C.; De Moraes, Consuelo M.; et al. (2020)
Journal of Chemical Ecology
Vector-borne pathogens, such as phytoplasmas, are known to manipulate both host plants and insect vectors to enhance their own transmission. In cranberries, phytoplasma infection causes false blossom disease, which is vectored by blunt-nosed leafhoppers (Limotettix vaccinii Van Duzee). We explored how phytoplasma infection of vegetative cranberry tissues affects the developmental performance and host preferences of L. vaccinii, and compared volatile emissions and phytohormone levels of infected and uninfected plants. In no-choice performance assays, L. vaccinii survival was similar on infected and uninfected cranberry plants. However, nymphs on infected plants took longer to reach adulthood, and produced larger adults, than those on uninfected plants. In oviposition tests, L. vaccinii females laid more eggs on uninfected than phytoplasma-infected cranberry plants. Olfactometer studies revealed preferences of L. vaccinii nymphs and adults for odors of uninfected plants when compared to clean air but not when compared to infected plants. Uninfected plants emitted higher amounts of volatiles than infected plants, particularly (E)-4,8-dimethyl-1, 3, 7-nonatriene, dodecane, and germacrene-D; however, we observed no effect of infection on phytohormone levels. Overall, our data show an oviposition preference of L. vaccinii for healthy plants, whereas our attraction data show no preference between infected and uninfected plants. While slower development on phytoplasma-infected cranberry plants led to larger adult size, there was no evidence for any beneficial effects of infection on other L. vaccinii performance parameters. Results from these studies are of relevance to understand tripartite plant-phytoplasma-insect vector interactions and are discussed in the context of the vector manipulation hypothesis. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
Cuticular Hydrocarbons as Sex Pheromone of the Bee Colletes cunicularius and the Key to its Mimicry by the Sexually Deceptive Orchid, Ophrys exaltata
Mant, Jim; Brändli, Christoph; Vereecken, Nicolas J.; et al. (2005)
Journal of Chemical Ecology
Brassica Plant Responses to Mild Herbivore Stress Elicited by Two Specialist Insects from Different Feeding Guilds
Sotelo, P.; Pérez, Eduardo; Najar-Rodriguez, Adriana J.; et al. (2014)
Journal of Chemical Ecology
Compensation growth and chemical defense are two components of plant defense strategy against herbivores. In this study, compensation growth and the response of primary and secondary metabolites were investigated in Brassica rapa plants subjected to infestation by two herbivores from contrasting feeding guilds, the phloem-feeding aphid Brevicoryne brassicae and the leaf-feeding caterpillar Pieris brassicae. These specialist herbivores were used at two different densities and allowed to feed for seven days on a young caged leaf. Changes in growth rates were assessed for total leaf area and bulb mass, whereas changes in primary and secondary metabolites were evaluated in young and mature leaves, roots, and bulbs. Mild stress by caterpillars on young plants enhanced mean bulb mass and elicited a contrasting regulation of aliphatic and indolic glucosinolates in the leaves. In contrast, mild stress by aphids enhanced leaf growth and increased glucosinolate concentrations in the bulb, the most important storage organ of B. rapa. A similar mild stress by either herbivore to older plants did not alter plant growth parameters or concentrations of the metabolites analyzed. In conclusion, Brassica plant growth was either maintained or enhanced under mild herbivore stress, and defense patterns differed strongly in response to herbivore type and plant development stage. These results have implications for the understanding of plasticity in plant defenses against herbivores and for the management of Brassica rapa in agroecosystems.
Jasmonate in lepidopteran eggs and neonates
Tooker, John F.; De Moraes, Consuelo M. (2005)
Journal of Chemical Ecology
Variation of insect attracting odor in endophytic Epichloë fungi: Phylogenetic constrains versus host influence
Steinebrunner, Fabrizio; Schiestl, Florian P.; Leuchtmann, Adrian (2008)
Journal of Chemical Ecology
Season-Long Volatile Emissions from Peach and Pear Trees In Situ, Overlapping Profiles, and Olfactory Attraction of an Oligophagous Fruit Moth in the Laboratory
Najar-Rodriguez, Adriana J.; Orschel, B.; Dorn, S. (2013)
Journal of Chemical Ecology
Comparisons and Contrasts in Host-Foraging Strategies of Two Larval Parasitoids with Different Degrees of Host Specificity
Cortesero, A.M.; De Moraes, Consuelo M.; Stapel, J.O.; et al. (1997)
Journal of Chemical Ecology
Ecological example of conditioned flavor aversion in plant-herbivore interactions: Effect of terpenes of Eucalyptus leaves on feeding by common ringtail and brushtail possums
Lawler, Ivan R.; Stapley, Jessica; Foley, William J.; et al. (1999)
Journal of Chemical Ecology
Jasmonate in lepidopteran larvae
Tooker, John F.; De Moraes, Consuelo M. (2006)
Journal of Chemical Ecology
Postpollination changes in floral odor in Silene latifolia
Muhlemann, Joëlle K.; Waelti, Marc O.; Widmer, Alex; et al. (2006)
Journal of Chemical Ecology

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