Katablepharid

The katablepharids, a group of heterotrophic flagellates,[1] have been considered as part of the Cryptista since katablepharids were described in 1939. Although they differ from other cryptophytes and have even been proposed to be alveolates, early 21st century research suggests they are related to cryptophytes.[2][3]

Katablepharid
Scientific classification
Domain:
Eukaryota
(unranked):
Hacrobia
(unranked):
Cryptista
Class:
Katablepharidea
Order:
Katablepharida
Family:
Katablepharidae

Vors 1992
Genus

Phylogeny

As of 2009, only five genera and ten species have been formally described. Dozens of other DNA sequences (both freshwater and marine) seem to represent further katablepharids which have not been cultured or formally described.[1]

Cryptista
 

Cryptomonada

 
Katablepharids
 

Roombia Okamoto et al. 2009[1]

 
 
 

Kathablepharis Skuja 1939[4]

 
 
 

Hatena Okamoto & Inouye 2006

 
 

Leucocryptos Butcher 1967[4]

 
 

Platychilomonas Larsen & Patterson 1990[1]

 
 
 
 
 

Classification

Based on studies done by Cavalier-Smith, Chao & Lewis 2015[5]

  • Super Class Leucocrypta Cavalier-Smith 2015 stat. n. [Kathablepharidophyta (sic)Okamoto & Inouye 2005]
    • Class Leucocryptea Cavalier-Smith 2004 [Kathablepharidea (sic) Okamoto & Inouye 2005; Kathablepharidophyceae (sic) Okamoto & Inouye 2005]

References
  1. Okamoto N, Chantangsi C, Horák A, Leander BS, Keeling PJ (2009). Stajich JE (ed.). "Molecular Phylogeny and Description of the Novel Katablepharid Roombia truncata gen. et sp. nov., and Establishment of the Hacrobia Taxon nov". PLoS ONE. 4 (9): e7080. Bibcode:2009PLoSO...4.7080O. doi:10.1371/journal.pone.0007080. PMC 2741603. PMID 19759916.
  2. Noriko Okamoto; Isao Inouye (2005). "The Katablepharids are a Distant Sister Group of the Cryptophyta: A Proposal for Katablepharidophyta Divisio Nova/Kathablepharida Phylum Novum Based on SSU rDNA and Beta-Tubulin Phylogeny". Protist. 156 (2): 163–79. doi:10.1016/j.protis.2004.12.003. PMID 16171184.
  3. Reeb, Vc; Peglar, Mt; Yoon, Hs; Bai Jr; Wu, M; Siu, P; Grafenberg, Jl; Reyes-Prieto, A; Rümmele, Se; Gross, J; Bhattacharya, D (May 2009). "Interrelationships of chromalveolates within a broadly sampled tree of photosynthetic protists". Molecular Phylogenetics & Evolution. 53 (1): 202–11. doi:10.1016/j.ympev.2009.04.012. ISSN 1055-7903. PMID 19398025.
  4. Kim, E; Graham, Le (Jul 2008). Redfield, Rosemary Jeanne (ed.). "EEF2 analysis challenges the monophyly of Archaeplastida and Chromalveolata". PLoS ONE. 3 (7): e2621. Bibcode:2008PLoSO...3.2621K. doi:10.1371/journal.pone.0002621. PMC 2440802. PMID 18612431.
  5. Cavalier-Smith; Chao; Lewis (2015), "Multiple origins of Heliozoa from flagellate ancestors: New cryptist subphylum Corbihelia, superclass Corbistoma, and monophyly of Haptista, Cryptista, Hacrobia and Chromista", Molecular Phylogenetics and Evolution, 93: 331–362, doi:10.1016/j.ympev.2015.07.004, PMID 26234272
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