Malcicka, Miriama and Ruther, Joachim and Ellers, Jacintha (2017) De novo Synthesis of Linoleic Acid in Multiple Collembola Species. JOURNAL OF CHEMICAL ECOLOGY, 43 (9). pp. 911-919. ISSN 0098-0331, 1573-1561
Full text not available from this repository. (Request a copy)Abstract
Many ecological interactions in communities take place between consumers and the organisms they feed on. Continuous surplus of specific nutritional compounds in the diet may lead to evolutionary changes in the metabolic capacity of the consumer, leaving the biosynthesis of such compounds prone to genetic decay and render organisms auxotrophic. A nutrient that is essential to many organisms is the unsaturated fatty acid, linoleic acid (LA; 18:2n-6), which is important in the maintenance of cell membrane fluidity and as a precursor for signaling molecules. LA is readily synthesized in bacteria, protozoa and plants, but it was long thought that all animals lack this ability. Although the majority of animals lack the ability for LA biosynthesis, an increasing number of studies have shown that LA is commonly synthesized in arthropods. Here, we investigated a basal hexapod group, Collembola, to shed light on early evolution of LA synthetic ability in arthropods and its relation to dietary composition. We use stable isotope labeling to detect biosynthesis of LA in Collembola fed with C-13-OA oleic acid (OA; 18:1n-9), a precursor of LA. Our data demonstrate that LA biosynthesis is common among Collembola with 10 out of 16 tested species being able to synthesize LA and 4 species lacking this ability. However, we did not find clear evidence for a relationship between LA synthetic ability and the natural diet of species. Thus, the selective pressures underlying LA biosynthesis might be species-specific and further research will shed new light on understanding this evolutionary process.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FATTY-ACIDS; AMERICAN COCKROACH; MYZUS-PERSICAE; BIOSYNTHESIS; METABOLISM; INSECTS; CRICKET; LIPIDS; MECHANISMS; PRECURSOR; Springtails; De novo synthesis; PUFAs; Diet; Desaturase; Oleic acid; Essential nutrients; Nutrition |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie Biology, Preclinical Medicine > Institut für Zoologie > Chemische Ökologie (Prof. Dr. Joachim Ruther) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:15 |
| Last Modified: | 18 Feb 2019 14:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1214 |
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