Gustatory responsiveness to pyrrolizidine alkaloids in the Senecio specialist, Tyria jacobaeae (Lepidoptera, Arctiidae)

@article{Bernays2004GustatoryRT,
  title={Gustatory responsiveness to pyrrolizidine alkaloids in the Senecio specialist, Tyria jacobaeae (Lepidoptera, Arctiidae)},
  author={Elizabeth a. Bernays and Thomas Michael Hartmann and Reginald F. Chapman},
  journal={Physiological Entomology},
  year={2004},
  volume={29}
}
Abstract.  Electrophysiological recordings from taste sensilla of the caterpillar Tyria jacobaeae with the pyrrolizidine alkaloids, characteristic compounds from their host plants, demonstrated sensitivity of a pyrrolizidine alkaloid‐sensitive cell in the lateral galeal sensilla at concentrations as low as 1 × 10−11 M. Another pyrrolizidine alkaloid‐sensitive cell in the medial galeal sensilla responded at higher concentrations. Both pyrrolizidine alkaloid‐cells were maximally sensitive to… Expand
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References

SHOWING 1-10 OF 31 REFERENCES
A taste receptor neurone dedicated to the perception of pyrrolizidine alkaloids in the medial galeal sensillum of two polyphagous arctiid caterpillars
TLDR
It is shown that pyrrolizidine alkaloids are phagostimulants for the caterpillar of two polyphagous arctiid caterpillars, although the species differ in their sensitivities. Expand
A highly sensitive taste receptor cell for pyrrolizidine alkaloids in the lateral galeal sensillum of a polyphagous caterpillar, Estigmene acraea
TLDR
It is demonstrated that a contact chemoreceptor neuron in the lateral galeal sensillum exhibits a dose-dependent response to seneciphylline N-oxide, a widely occurring pyrrolizidine alkaloid, down to concentrations of 10–9 mol l–1, and even at 10–12 mol–1 the response is greater than to salt alone. Expand
Taste Receptors for Pyrrolizidine Alkaloids in a Monophagous Caterpillar
TLDR
The data show that there is no tight link between taste receptor sensitivity to specific PAs and hostplant selection in these caterpillars, suggesting that the adults are primarily responsible forHostplant selection. Expand
The Influence of Pyrrolizidine Alkaloids of Senecio Jacobaea On Tyria Jacobaeae, Brachycaudus Cardii and Haplothrips Senecionis
TLDR
Results are in agreement with the predictions of the plant apparency theory which states that specialist herbivores are adapted to a qualitative chemical defence (Pa's) and generalists (polyphagous) herbivore are not. Expand
Pyrrolizidine alkaloids in arctiid moths (Lep.) with a discussion on host plant relationships and the role of these secondary plant substances in the Arctiidae
TLDR
It is suggested that the Arctiid moths' own deterrent secretions, directed against vertebrate predators, pre-adapts them for feeding on foliage likewise protected against large herbivores by toxic secondary plant substances such as cardenolides and pyrrolizidine alkaloids. Expand
The two facies of pyrrolizidine alkaloids: the role of the tertiary amine and its N-oxide in chemical defense of insects with acquired plant alkaloids.
TLDR
The novel enzyme was named senecionine N-oxygenase (SNO), which isolated from the haemolymph of the sequestering arctiid Tyria jacobaeae and purified to electrophoretic homogeneity, and showed the same general substrate specificity but differ in their affinities towards the main structural types of pyrrolizidine alkaloids. Expand
Sequestration of pyrrolizidine alkaloids in several arctiid moths (Lepidoptera: Arctiidae)
TLDR
The larval integument figures as the main storage site for resorbed alkaloids; only minor amounts of alkaloid could be found in the meconium and the exuviae of this species. Expand
Sequestration, N-Oxidation and Transformation of Plant Pyrrolizidine Alkaloids by the Arctiid Moth Tyria jacobaeae L
TLDR
It is suggested that Tyria is able to esterify retronecine, derived from hydrolysis of ingested plant PAs with a necic acid produced by the insect. Expand
Evolutionary recruitment of a flavin-dependent monooxygenase for the detoxification of host plant-acquired pyrrolizidine alkaloids in the alkaloid-defended arctiid moth Tyria jacobaeae
TLDR
The data indicate that the gene for T. jacobaeae SNO, highly specific for toxic pyrrolizidine alkaloids, was recruited from a preexisting insect-specific FMO gene family of hitherto unknown function. Expand
Organ-specific distribution and accumulation of pyrrolizidine alkaloids during the life history of two annual Senecio species
TLDR
The highest alkaloid content was found in the flower heads, 70 % and 90 % of total alkaloids for S. vernalis and S. vulgaris, respectively, and the role of the pyrrolizidine N-oxides as the dominating type of alkaloidal in the two Senecio species is discussed. Expand
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