Paramecium - Deutsche Gesellschaft für Protozoologie / German ...

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The Sweet Taste of Plankton: How the Dinoflagellate, Oxyrrhis marina, Recognizes it’s Prey Emily Roberts 1 , Emma Wootton 1 , Mikhail Zubkov 2 1 Swansea University, UK 2 National Oceanography Centre, UK Through selective feeding, protists play a fundamental role in structuring bacterial and phytoplankton communities within the marine environment. Although recent evidence indicates that protozooplankton can select food based on cell surface properties of their prey, the underlying mechanisms are poorly understood. Previously, using haemagglutination experiments, we identified a Ca2+-dependent, mannose-binding lectin (MBL) on the marine dinoflagellate Oxyrrhis marina. Feeding experiments, involving live and bead prey, demonstrated the employment of this lectin as a feeding receptor, used for recognizing and selecting prey. Further characterization of the lectin has revealed it is highly specific in terms of its carbohydrate-binding properties. These results highlight the necessity of purifying protozoan receptors if detailed investigations into biochemical feeding mechanisms are to be undertaken. The purified high specificity receptor is particularly valuable in determining the composition of prey cell surface glycoconjugugates, and in establishing which ligands are involved in the predator-prey interaction. e.roberts@swansea.ac.uk e.c.wootton@swansea.ac.uk mvz@noc.soton.ac.uk 17
Vorträge 18
Page 1 and 2: 27. Jahrestagung der Deutschen Gese
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Page 9 and 10: Diversität 9. Anke Oertel, Wilhelm
Page 11 and 12: Abstracts Plenarvorträge 12
Page 13 and 14: In situ diversity of marine heterot
Page 15: A hidden world of protists in our o
Page 19 and 20: Testing the competition-colonizatio
Page 21 and 22: Die Bedeutung von Mixotrophie in Ge
Page 23 and 24: Anoxicity structures microbial euka
Page 25 and 26: Unexpected morphological and functi
Page 27 and 28: Invasion und Ausbreitung mobiler In
Page 29 and 30: How did the last common ancestor of
Page 31 and 32: Size dependent interaction of flage
Page 33 and 34: Konsument und Ressource: Bottom-up
Page 35 and 36: Protozoan cell and organelle motili
Page 37 and 38: Primer development for the detectio
Page 39 and 40: Gravitation and light dependent swi
Page 41 and 42: Amoebae in carbonate precipitating
Page 43 and 44: Ochromonas spp. - A small but power
Page 45 and 46: Niche separation and coexistence of
Page 47 and 48: Bestimmung der Wachstumsrate und de
Page 49 and 50: Heterotrophe Protozoen in einer mik
Page 51 and 52: Drei neue, haptoride Boden-Ciliaten
Page 53 and 54: Improving target-taxa recovery in d
Page 55 and 56: New choanoflagellate species from D
Page 57 and 58: Rare and likely new heterotrophic f
Page 59 and 60: Ultrastructure and molecular phylog
Page 61 and 62: Changes in the three-dimensional st
Page 63 and 64: Protein phosphatase 2B (PP2B, calci
Page 65 and 66: Antisense transcripts in Paramecium
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Ulrike-Gabriele Berninger Universit
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Norbert Hülsmann Freie Universitä
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Michael Moser Institut für Limnolo
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Annette Schlüssel Lechenicher Str.
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Christine Willen Universität zu K
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