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Pseudotetracystis terrestris Arneson

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Chlorophyceae
Order Chlamydomonadales
Family Chlorosarcinaceae
Genus Pseudotetracystis

Pictures

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Pseudotetracystis terrestris Arneson
Starch grains visible on pyrenoid of dividing clls. 05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

Pseudotetracystis terrestris Arneson
Diads and tetrad packets. 05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

Pseudotetracystis terrestris Arneson
Colonies growing on BMM with 3X the normal nitrogen level. 05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

Pseudotetracystis terrestris Arneson
05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

Pseudotetracystis terrestris Arneson
Asteroid chloroplast indicated by arrow.. 05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

Pseudotetracystis terrestris Arneson
05 Jan 2012. Valerie R. Flechtner. © Valerie R. Flechtner.

 

Dilophus marginatus (Okamura) Okamura

Pseudotetracystis terrestris Arneson Starch grains visible on pyrenoid of dividing clls
© Valerie R. Flechtner

Publication details
Pseudotetracystis terrestris Arneson 1973: 11, figs 1-12

Published in: Arneson, R.D. (1973). Pseudotetracystis, a new chlorosarcinacean alga. Journal of Phycology 9: 10-14.

Type species
This is the type species (holotype) of the genus Pseudotetracystis.

Status of name
This name is of an entity that is currently accepted taxonomically.

Origin of species name
Adjective (Latin), growing on the ground or soil, as opposed to rocks or trees (Stearn 1973).

Synonym(s)
No synonyms are currently included in AlgaeBase.

General environment
This is a terrestrial species.

Description
Single vegetative cells spherical to oblong, 5.5-18 µm wide in mature cultures; dividing cells to 22 µm. Flat and raised packets of cells formed by vegetative division which produces 2-4 (rarely 8) daughter cells which often adhere in small groups; several generation of cells sometimes visible inside a single cell wall. One (rarely 2) chloroplast which can be lobed or asteroid; one (rarely 2) pyrenoids with large starch grains covering the hull. No extracellular matrix is present. Naked zoospores are dorsal-ventrally flattened and are of varying sizes (2-4 µm wide by up to 12 µm long); some are very flexible. Typically 4-8 zoospores produced per sporangium. Zoospores have a round posterior and either a round or pointed anterior; a small stigma, nucleus and 2 contractile vacuoles are positioned at the anterior end; no pyrenoid was observed. No caroteniod pigment was observed. UTEX1927

Habitat
Isolated from soil collected near Reagan County Texas

Detailed distribution with sources (Click to Load)

Key references
Andreyeva, V.M (1998). Poczvennye i aerophilnye zelyonye vodorosli (Chlorophyta: Tetrasporales, Chlorococcales, Chlorosarcinales). Terrestrial and aerophilic green algae (Chlorophyta: Tetrasporales, Chlorococcales, Chlorosarcinales). pp. [1]-349, [2], 108 pls. St Petersberg: "NAUKA".

Tsarenko, P.M. (2011). Sphaeropleales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 280-355. Ruggell: A.R.A. Gantner Verlag K.-G..

Created: 02 May 2002 by M.D. Guiry

Verified by: 05 March 2013 by M.D. Guiry

Accesses: This record has been accessed by users 595 times since it was created.

Verification of data
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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=51835

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 24 June 2019.

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