Gloeodendron Korshikov, 1916

Holotype species: Gloeodendron ramosum Korshikov

Original publication and holotype designation: Korshikov, A.A. (1916). Materials on the flora of algae in Russia. Apiocystis globosa nov. sp. et Gloeodendron ramosa n. gen. et sp. Trudy Obshchestva Ispytateley Prirody pri Imperatorskom Khar'kovskom Universitete 49: 1-15, 1 pl. [in Russian]

Description: Branched, pseudofilamentous, yellow-green colonies mostly to 500 &m (but up to 15 cm long) with net-like or anastomosing portions, with cells embedded in copious mucilaginous matrix. Matrix colorless and structureless when young, later becoming distinctly lamellate. Strands with single cells to 30 &m; with two cells to 40 &m. Cells widely separated in matrix forming clusters of 2-4 cells after cell division. Cells spherical to ellipsoid, 3-13 &m diameter, mostly in one row, except where recently divided. Cell walls smooth. Cells uninucleate with two contractile vacuoles; single chloroplast parietal and cup-shaped with one pyrenoid but without stigma. Asexual reproduction by biflagellate zoospores, produced by any cell in colony; up to 8 spores per parental cell. Zoospores spherical to ovate and 8-9 &m long; chloroplast parietal and cup-shaped, with pyrenoid and stigma. After free-swimming period zoospores settle, lose flagella and begin secreting envelope. Sexual reproduction anisogamous from spherical, biflagellate gametes 4-6 &m in diameter. Gametes produced by any cell in thallus. Syngamy by fusion of cell anteriors producing a quadriflagellate planozygote. Sexual reproduction only late in growing season. Details of zygote germination unknown. Gloeodendron epilithic or epiphytic on various algae or vascular plants in freshwater; widely reported from North America, Europe and Asia. Isolate available from culture collection (UTEX 513). In culture plants grow well on agar or liquid medium.

Information contributed by: D. Garbary. The most recent alteration to this page was made on 2021-01-16 by M.D. Guiry.

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

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Tetrasporales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 225-232. Ruggell: A.R.A. Gantner Verlag K.-G..

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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=44226

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 16 January 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024