Ochrophyta
Dense kelp forest with understorey at Partridge Point near Dave
Dense kelp forest with understory at Partridge Point near Dave's Caves, Cape Peninsula
Scientific classification e
Clade: SAR
Infrakingdom: Heterokonta
Phylum: Ochrophyta
Cavalier-Smith, 1995[1]
Classes
Synonyms
  • Heterokontophyta van den Hoek et al., 1978
  • Ochrista Cavalier-Smith, 1986[2][3]
  • Stramenochromes Leipe et al., 1994[4]

Ochrophyta is a group of mostly photosynthetic heterokonts.[5][6] Their plastid is of red algal origin.[7]

The classification of the group is still being worked out. Some authors (e.g., Cavalier-Smith) divide it into two subphyla, Phaeista Cavalier-Smith 1995 (comprising Hypogyristea and Chrysista in some classifications, or Limnista and Marista in others) and Khakista Cavalier-Smith, 2000 (comprising Bolidomonas and diatoms).[8] Others prefer not to use the subphyla, listing only lower taxa (e.g., Reviers, 2002, Guiry & Guiry, 2014).[citation needed]

Phylogeny

Based on the work of Ruggiero et al. (2015)[9] and on Silar (2016).[10]

  Ochrophyta  
  Khakista  

Bolidophyceae
(Guillou & Chretiennot-Dinet 1999)

Bacillariophyceaediatoms
(Haeckel 1878)

  Phaeista  
  Hypogyrista  

Dictyochophyceae
(Silva 1980)

Pelagophyceae
(Andersen & Saunders, 1993)

  Chrysista  
  Eustigmista  

Pinguiophyceae
(Kawachi et al. 2002)

Eustigmatophyceae
(Hibberd & Leedale 1971)

  Phagochrysia  

Picophagea
(Cavalier-Smith 2006)

Synchromophyceae
(Horn & Wilhelm 2007)

Leukarachnion
(Geitler 1942)

Chrysophyceaegolden-brown algae
(Pascher 1914)

  Xanthophytina  
  Raphidoistia  

Raphidophyceae s.l.

  Fucistia  

Phaeophyceaebrown algae
(Hansgirg 1886)

Chrysomerophyceae
(Cavalier-Smith 1995)

Phaeothamniophyceae s.l.
(Andersen & Bailey 1998)

Xanthophyceaeyellow-green algae
(Allorge 1930)
(emend. Fritsch 1935)

References

  1. ^ Cavalier-Smith T (1995). "Zooflagellate phylogeny and classification". Cytology. 37 (11): 1010–1029. PMID 8868448.
  2. ^ Cavalier-Smith, T. (1986). The kingdom Chromista, origin and systematics. In: Round, F.E. and Chapman, D.J. (eds.). Progress in Phycological Research. 4: 309–347.
  3. ^ Reviers, B. de. (2006). Biologia e Filogenia das Algas. Editora Artmed, Porto Alegre, p. 157.
  4. ^ Reviers, B. de. (2006). Biologia e Filogenia das Algas. Editora Artmed, Porto Alegre, pp. 15-16.
  5. ^ Thomas Cavalier-Smith & Ema E.-Y. Chao (2006). "Phylogeny and megasystematics of phagotrophic heterokonts (kingdom Chromista)". Journal of Molecular Evolution. 62 (4): 388–420. Bibcode:2006JMolE..62..388C. doi:10.1007/s00239-004-0353-8. PMID 16557340. S2CID 29567514.
  6. ^ Ingvild Riisberga; Russell J. S. Orr; Ragnhild Kluge; Kamran Shalchian-Tabrizi; Holly A. Bowers; Vishwanath Patil; Bente Edvardsen; Kjetill S. Jakobsen (2009). "Seven gene phylogeny of heterokonts". Protist. 160 (2): 191–204. doi:10.1016/j.protis.2008.11.004. PMID 19213601.
  7. ^ Updating algal evolutionary relationships through plastid genome sequencing: did alveolate plastids emerge through endosymbiosis of an ochrophyte?
  8. ^ "Heterokontophyta". SHIGEN. National Institute of Genetics. Retrieved June 18, 2009.
  9. ^ Ruggiero, Michael A.; et al. (2015). "Higher level classification of all living organisms". PLoS One. 10 (4): e0119248. Bibcode:2015PLoSO..1019248R. doi:10.1371/journal.pone.0119248. PMC 4418965. PMID 25923521.
  10. ^ Silar, Philippe (2016). "Protistes eucaryotes: Origine, evolution et biologie des microbes eucaryotes". HAL Archives-ouvertes. Paris, FR: Université Paris Cité. pp. 1–462. ISBN 978-2-9555841-0-1.