1. PLASTICITY OF OXYLIPIN METABOLISM AMONG CLONES OF THE MARINE DIATOM SKELETONEMA MARINOI (BACILLARIOPHYCEAE)1
- Author
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Angelo Fontana, Andrea Gerecht, Adele Cutignano, Adrianna Ianora, Giovanna Romano, and Giuliana d'Ippolito
- Subjects
0106 biological sciences ,chemistry.chemical_classification ,0303 health sciences ,education.field_of_study ,biology ,010604 marine biology & hydrobiology ,fungi ,Population ,Fatty acid ,Marine diatom ,Plant Science ,Aquatic Science ,Oxylipin ,biology.organism_classification ,01 natural sciences ,03 medical and health sciences ,Lipoxygenase ,Diatom ,chemistry ,Skeletonema marinoi ,Botany ,biology.protein ,education ,Copepod ,030304 developmental biology - Abstract
Diatom oxylipins have been observed to deleteriously impact copepod reproductive success. However, field studies have revealed very variable and case-dependent results. Therefore, the plasticity of diatom oxylipin metabolism was studied among four clones of the marine diatom Skeletonema marinoi Sarno et Zingone. Diatom oxylipin metabolism was studied by two lipoxygenase (LOX) activity assays carried out at different pH values and by oxylipin quantification. The four clones showed no major metabolic differences in terms of protein content or growth rate. However, two of the clones produced significantly higher levels of oxylipins than the other two. LOX activity measurements also indicated clonal variability in fatty acid oxidative metabolism. The presence of clone-specific differences in oxylipin metabolism may play a role in shaping diatom population dynamics by conferring selective advantages to certain clones.
- Published
- 2011
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