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Showing 1 to 8 of 8 for “"Aplysina"”.
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Constituents of Aplysina Fistularis
… of three species of a marine sponge, Aplysina fistularis, were examined by gas chromatography/mass spectrometry (GC/MS), high pressure liquid chromatography (HPLC) and classical fractionation and purification procedures. GC/MS indicated that many brominated tyrosine metabolites were …
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Charakterisierung der enzymatischen Abwehrreaktion in Schwämmen der Gattung Aplysina und Isolierung von Bromotyrosinalkaloiden aus Aplysina insularis
Marine Schwämme der Gattung Aplysina besitzen Bromotyrosinealkaloide als typische Sekundärmetabolite. Diese Alkaloide werden in einer enzymatischen Abwehrreaktion zu biologisch aktiven Produkten abgebaut. In der vorliegenden Arbeit ist die Isolierung von 14 Schwamminhaltstsoffen aus dem Schwamm …
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The biosynthesis of brominated tyrosine metabolites by Aplysina fistularis
… tyrosine metabolites by the marine sponge Aplysina fistularis was investigated. ($U$-$\sp{14}$C) -L-Tyrosine, ($U$-$\sp{14}$C) -L-3-bromotyrosine, and ($U$-$\sp{14}$) -3,5-dibromotyrosine were incorporated into both dibromoverongiaquinol and aeroplysinin-1, and (methyl-$\sp{14}$C) …
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Structure Elucidation and Biosynthesis of Selected Bioactive Marine Natural Products (Bromophenols, Aplysina, Fistularis, Kelletia)
The biosynthesis of bromophenols in Aplysina fistularis has been reinvestigated, making use of liposome-encapsulated precursors. The incorporation of both phenylalanine and tyrosine into two antimicrobial sponge metabolites, 2,6-dibromo-4-hydroxy-2,5-cyclohexadienone-4-acetamide and …
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Individual And Population Responses Of The Caribbean Sponge, Aplysina Cauliformis, To Natural And Anthropogenic Stressors
… the responses of a combranching sponge, Aplysina cauliformis, to algal contact, eutrophication, hurricanes, and disease. The effects of algal competition, anthropogenic nutrients and a combination of these stressors on A. cauliformis were examined using factorial designed field …
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Marine Microbial Communities in Health and Disease: an Exploration of Marine Bacterial Associations Across Space, Time, and Potential Roles Against Pathogens in the Context of the Current Global Climate Change Scenario
… of host-microbial relationships. The sponge Aplysina cauliformis can be affected by Aplysina Red Band Syndrome and transmission experiments coupled with the analysis of the bacterial communities associated with both healthy and diseased individuals performed in this dissertation suggested …
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Inducible Chemical Defenses in Temperate Reef Sponges of the South Atlantic Bight, U.S.A.
… predictions with Ircinia campana, I. felix, and Aplysina fulva. First, concentrations of antipredator compounds should covary with the abundance of sponge predators. Second, higher compound concentrations should be more effective at deterring predators. Secondary metabolite concentrations in two …
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Are Chemical Defenses Allocated within Sponges to Defend Regions Most at Risk to Predator Attack?
… defenses varied within Ircinia felix and Aplysina fulva, but were equal throughout I. campana. There were, however, no consistent positive or negative correlations between chemical defenses and nutritional quality or structural components and no clear correlation between chemical defense …