Sarcinochrysis L.Geitler, 1930

Holotype species: Sarcinochrysis marina Geitler

Original publication and holotype designation: Geitler, L. (1930). Ein grünes Filarplasmodium und andere neue Protisten. Archiv für Protistenkunde 69: 614-636.

Description: Palmelloid cells, thin-walled, with young stages arranged in cubic aggregates of 4 or more cells, while in older cultures arrangement of colonies is irregular. A variety is known (Billard, 1988) which forms distinctive, very short filaments, with intercalary divisions. Cells spherical or ellipsoidal (5 ( 9 &m, smaller in the filamentous variety), with 2 deep yellow, lobate chloroplasts, each with a prominent, bulging pyrenoid. Chrysolaminaran vacuoles and lipid globules, with muciferous bodies present but more or less apparent. Zoospores negatively phototactic, variable in shape, ovate to bean-shaped in lateral view (5-7 ( 4-9 &m), with 2 heterokont flagella (6-7 and 10-2 &m), laterally inserted in the anterior third of the cell. The longer leading flagellum bears tripartite mastigonemes, while the posterior flagellum is smooth and acronematic (Gayral, 1972). One bilobed chloroplast and no eyespot present. No stomatocysts nor sexual reproduction recorded in culture. Sarcinochrysis is a rather infrequently recorded cosmopolitan marine littoral organism. The filamentous variety, probably epiphytic in nature, appears restricted to warmer waters, while the typical form is more temperate and often monadoid. Recent analyses of molecular data (Saunders and others 1997) show that Sarcinochrysis, type genus of the Sarcinochrysidales, has affinities to the Pelagophyceae.

Information contributed by: C. Billard. The most recent alteration to this page was made on 2018-02-13 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Han, K.Y., 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: 79-106, 12 figs, 2 tables.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=44593

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 13 February 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 07 May 2024