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Euglenozoa
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Die Euglenozoa bilden ein Taxon eukaryotischer geiΓeltragender Excavata. Die Euglenozoa wurden frΓΌher den Flagellaten der Protozoen zugeordnet.
Contents
β’ Merkmale
β’ Systematik
β’ Nachweise
β’ Weblinks
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Merkmale
Die meisten Euglenozoa sind zwischen 15 und 40 Β΅m lang und damit relativ klein, einige werden jedoch bis zu 500 Β΅m groΓ. Als entscheidende Synapomorphie der Euglenozoa wird das Vorkommen heteromorpher ParaxonemalstΓ€be parallel zum Axonem der GeiΓeln angesehen.cite-ref-simpson-1-0[1] Auf molekularer Ebene sind das Auftreten des auΓergewΓΆhnlichen DNA-Bausteins Beta-D-glucosyl-hydroxymethyluracil (βBase Jβ),cite-ref-gommers-2-0[2] sowie das Trans-SpleiΓen charakteristische Merkmale der Euglenozoa.cite-ref-frantz-3-0[3]
Systematik
Untergruppen der Euglenozoa sind:cite-ref-adl2-4-0[4]
β’ Euglenida
β’ Kinetoplastea
β’ Diplonemea
β’ Symbiontida
Verbreitung und Lebensweise
Vertreter der Euglenozoa sind weltweit verbreitet und sehr vielfΓ€ltig in ihrer Lebensweise. Es gibt photoautotrophe, Photosynthese treibende Arten, heterotrophe Arten, Parasiten und Krankheitserreger.
Nachweise
cite-note-simpson-11. β A. G. B. Simpson, J. van den Hoff, C. Bernard, H. Burton, D. J. Patterson: The ultrastructure and systematic position of the euglenozoon Postgaardi mariagerensis, Fenchel et al. In: Archiv fΓΌr Protistenkunde. 147, 3β4, April 1997, S. 213β225.
cite-note-gommers-22. β J. H. Gommers-Ampt, F. Van Leeuwen, A. L. de Beer, J. F. Vliegenthart, M. Dizdaroglu, J. A. Kowalak, P. F. Crain, P. Borst: Beta-D-glucosyl-hydroxymethyluracil: a novel modified base present in the DNA of the parasitic protozoan T. brucei. In: Cell. 75, 1993, S. 1129β1136.
cite-note-frantz-33. β C. Frantz, C. Ebel, F. Paulus, P. Imbault: Characterization of trans-splicing in euglenoids. In: Curr. Genet. 37, 2000, S. 349β355.
cite-note-adl2-44. β S. M. Adl, A. G. B. Simpson, C. E. Lane, J. LukeΕ‘, D. Bass, S. S. Bowser, M. W. Brown, F. Burki, M. Dunthorn, V. Hampl, A. Heiss, M. Hoppenrath, E. Lara, L. le Gall, D. H. Lynn, H. McManus, E. A. D. Mitchell, S. E. Mozley-Stanridge, L. W. Parfrey, J. Pawlowski, S. Rueckert, L. Shadwick, C. L. Schoch, A. Smirnov, F. W. Spiegel: The Revised Classification of Eukaryotes. In: Journal of Eukaryotic Microbiology. 59, 2012, S. 429β514. (PDF; online)
Weblinks
Commons
: Euglenozoa
β Sammlung von Bildern, Videos und Audiodateien
β’ Tree of Life Web Project β Euglenozoa