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Rigifilida

Rigifilida
Sistematika
CarstvoProtista
KoljenoVarisulca
RazredHilomonadea
RedRigifilida
Rigifila
Micronuclearia

Rigifilida ili Micronucleariida je mala grupa protista, ameboida, koji imaju filopodije, a žive u tlu i u vodenim staništima, gdje se hrane bakterijama.[1][2] Imaju zaobljene ćelije, sa kružnim dorzoventralnim profilom, iako su ponekad fleksibilne. Ćelijska membrana je oslonjena na sloj prlikule u dorzalnom i bočnom dijelu, okružujući središnju kružnu depresiju na trbuhu ćelije, s rubovima koji čine ovratnik. Fine i razgranate pseudopodije, koji nastaju iz središnje depresije, služe za hvatanje bakterija, kojima se hrane. Mitohondrijske kriste su ravne.[3]

Taksonomski položaj ove grupe je upitan, jer se čini da ne spada u pet supergrupa Eukarya.[4] Cavalier-Smith smatra da Amoebozoa i Opisthokonta čine baznu skupinu i svrstavaju ih zajedno s drugim srodnim skupinama u Sulcozoa.[5]

Također pogledajte

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Reference

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  1. ^ Cavalier-Smith, T. (2013). Early evolution of eukaryote feeding modes, cell structural diversity, and classification of the protozoan phyla Loukozoa, Sulcozoa, and Choanozoa. European journal of protistology, 49(2), 115-178.
  2. ^ Yabuki, A., Ishida, K. I., & Cavalier-Smith, T. (2013). Rigifila ramosa n. gen., n. sp., a filose apusozoan with a distinctive pellicle, is related to Micronuclearia. Protist, 164(1), 75-88.
  3. ^ Adl et al. 2012. The revised classification of eukaryotes. Journal of Eukaryotic Microbiology, 59(5), 429-514
  4. ^ Burki, F. (2014). "The eukaryotic tree of life from a global phylogenomic perspective". Cold Spring Harbor Perspectives in Biology. 6: 1–17. doi:10.1101/cshperspect.a016147.
  5. ^ Ruggiero, M. A., Gordon, D. P., Orrell, T. M., Bailly, N., Bourgoin, T., Brusca, R. C., Cavalier-Smith, T., Guiry, M.D. y Kirk, P. M. (2015). A Higher Level Classification of All Living Organisms.

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Rigifilida
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