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Comparative study of the labial gland secretion in termites (Isoptera)
D. Sillam-Dussès, J. Krasulová, V. Vrkoslav, J. Pytelková, J. Cvačka, K. Kutalová, T. Bourguignon, T. Miura, J. Šobotník,
Language English Country United States
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
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- MeSH
- Electrophoresis, Polyacrylamide Gel MeSH
- Exocrine Glands secretion MeSH
- Insect Proteins chemistry secretion MeSH
- Isoptera physiology MeSH
- Molecular Sequence Data MeSH
- Gas Chromatography-Mass Spectrometry MeSH
- Amino Acid Sequence MeSH
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
Labial glands are present in all castes and developmental stages of all termite species. In workers, their secretion contains a food-marking pheromone and digestive enzymes, while soldier secretion plays a defensive role. However, these functions were studied only in a limited set of species, and do not allow drawing general conclusions. Hence, we have investigated the chemical composition of the labial gland extracts from soldiers and workers in 15 termite species belonging to 6 families using an integrative approach based on proteomic and small-molecule profiling. We confirmed the presence of hydroquinone and cellulase in the labial glands of workers, and we identified new toxic compounds in soldiers and workers of several species. Our results highlight the dual role of labial gland secretion, i.e. the defensive role in soldiers and workers of several termite species, and the digestive function in workers.
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- $a Labial glands are present in all castes and developmental stages of all termite species. In workers, their secretion contains a food-marking pheromone and digestive enzymes, while soldier secretion plays a defensive role. However, these functions were studied only in a limited set of species, and do not allow drawing general conclusions. Hence, we have investigated the chemical composition of the labial gland extracts from soldiers and workers in 15 termite species belonging to 6 families using an integrative approach based on proteomic and small-molecule profiling. We confirmed the presence of hydroquinone and cellulase in the labial glands of workers, and we identified new toxic compounds in soldiers and workers of several species. Our results highlight the dual role of labial gland secretion, i.e. the defensive role in soldiers and workers of several termite species, and the digestive function in workers.
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