Pelagophyceae

Pelagophyceae is a class of heterokont algae. It is the sister group of the Dictyochophyceae.^[2]

Pelagophyceae
Scientific classification
Domain:	Eukaryota
Clade:	Diaphoretickes
Clade:	SAR
Clade:	Stramenopiles
Phylum:	Gyrista
Subphylum:	Ochrophytina
Infraphylum:	Diatomista
Class:	Pelagophyceae R.A.Andersen & G.W.Saunders 1993
Orders
Pelagomonadales Sarcinochrysidales
Synonyms
Pelagophycidae Andersen & Saunders 1993 ex Cavalier-Smith 2006[1] Sarcinochrysidae Cavalier-Smith 1993 Sarcinochrysidophyceae Van Den Hoek, Mann & Jahns 1995

All known species are marine. They can be single-celled (coccoid or flagellate), palmelloid or filamentous. Some members (Pelagomonas) belong to picoplankton, and some other (Sarcinochrysis) are macroscopic attached organisms.^[3]

The class contains 13 genera, 3 families and 2 orders (2017):^[4][5]

• Order Pelagomonadales Andersen & Saunders 1993
  • Family Pelagomonadaceae Andersen & Saunders 1993
    • genus Ankylochrysis Billard 1995
    • genus Aureococcus Hargraves & Sieburth 1988
    • genus Chrysophaeum Lewis & Bryan 1941 non Taylor 1951
    • genus Pelagococcus Norris 1977
    • genus Pelagomonas Andersen & Saunders 1993
• Order Sarcinochrysidales Gayral & Billard 1977
  • Family Chrysocystaceae Melkonian, Yoon & Andersen 2018
    • genus Chrysocystis Lobban, Honda & Chihara 1995
    • genus Chrysoreinhardia Billard 2000
    • genus Sungminbooa Yoon & Andersen 2018
  • Family Sarcinochrysidaceae Gayral & Billard 1977
    • genus Andersenia Wetherbee & Waller 2015
    • genus Arachnochrysis Andersen & Han 2018
    • genus Aureoscheda Wynne & Andersen 2014
    • genus Aureoumbra Stockwell et al. 1997
    • genus Chrysonephos Taylor 1952
    • genus Nematochrysopsis Billard 2000
    • genus Pelagospilus Andersen & Graf 2018
    • genus Sarcinochrysis Geitler 1930
    • genus Sargassococcus Andersen & Han 2018

It is expected that molecular studies will add more species to this list.^[3]

References

1. Cavalier-Smith, Thomas (2017). "Kingdom Chromista and its eight phyla: a new synthesis emphasising periplastid protein targeting, cytoskeletal and periplastid evolution, and ancient divergences". Protoplasma. 255 (1): 297–357. doi:10.1007/s00709-017-1147-3. PMC 5756292. PMID 28875267.
2. Bringloe TT, Starko S, Wade RM, Vieira C, Kawai H, De Clerck O, Cock JM, Coelho SM, Destombe C, Valero M, Neiva J, Pearson GA, Faugeron S, Serrão EA, Verbruggen H (2020). "Phylogeny and Evolution of the Brown Algae" (PDF). Critical Reviews in Plant Sciences. 39 (4): 281–321. Bibcode:2020CRvPS..39..281B. doi:10.1080/07352689.2020.1787679.
3. Wetherbee R.; Gornik S. G.; Grant B.; Waller R. F. (2015). "Andersenia, a genus of filamentous, sand-dwelling Pelagophyceae from southeastern Australia". Phycologia. 54 (1): 35–48. Bibcode:2015Phyco..54...35W. doi:10.2216/14-107.1.
4. "Pelagophyceae". WoRMS. World Register of Marine Species. Retrieved 2017-06-13.
5. Han, K.; Graf, L.; Reyes, C. P.; Melkonian, B.; Andersen, R. A.; Yoon, H. S.; Melkonian, M. (2018). "A Re-investigation of Sarcinochrysis marina (Sarcinochrysidales, Pelagophyceae) from its Type Locality and the Descriptions of Arachnochrysis, Pelagospilus, Sargassococcus and Sungminbooa genera nov". Protist. 169 (1): 79–10. doi:10.1016/j.protis.2017.12.004.