| Dimorphococcus | |
|---|---|
| |
| Dimorphococcus lunatus | |
Scientific classification
| |
| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Sphaeropleales |
| Family: | Scenedesmaceae |
| Genus: |
Dimorphococcus Braun |
| Species | |
Dimorphococcus is a genus of fresh water green algae in the family Scenedesmaceae. [1] It is found as a component of the phytoplankton of freshwater ponds, lakes, and peat bogs. It is widespread, but usually not very common. [2]
Dimorphococcus is usually found in small colonies of multiples of four cells, surrounded by a gelatinous mass. Groups of four cells are further attached to each other via mucilaginous strands, which are the remnants of the mother cell wall. [3] Cells are kidney-shaped to heart-shaped, 10–25 μm long and 3–8(–15) μm wide. Each cell is uninucleate (containing one nucleus) and has one parietal chloroplast each with one or more pyrenoids. [2]
Dimorphococcus reproduces asexually via autospores, with four spores produced per mother cell. Autospores are released through a lateral tear in the mother cell wall. After release, the empty cell wall gradually dissolves. [2]
Currently, Dimorphococcus is placed in the family Scenedesmaceae, according to molecular phylogenetic analyses. [4]
One species, Dimorphococcus fritschii, is of uncertain status. The phycologist Chin Chih Jao considered it to have a different structure than other species of Dimorphococcus; accordingly, he placed it into a new genus, Dimorphococcopsis. The species has not been re-investigated and it is possible that the original placement was correct. [5]
- ^ See the NCBI webpage on Dimorphococcus. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
- ^ a b c Guiry, M.D.; Guiry, G.M. "Dimorphococcus". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2023-11-24.
- ^ Matthews, Robin A. (2016). "Freshwater Algae in Northwest Washington, Volume II, Chlorophyta and Rhodophyta". A Collection of Open Access Books and Monographs. Western Washington University. doi: 10.25710/fctx-n773.
- ^ Hegewald, Eberhard; Wolf, Matthias; Keller, Alexander; Friedl, Thomas; Krienitz, Lothar (2010). "ITS2 sequence-structure phylogeny in the Scenedesmaceae with special reference to Coelastrum (Chlorophyta, Chlorophyceae), including the new genera Comasiella and Pectinodesmus". Phycologia. 49 (4): 325–335. Bibcode: 2010Phyco..49..325H. doi: 10.2216/09-61.1. S2CID 85145401.
- ^ Komárek, J.; Fott, B. (1983). Chlorophyceae (Grünalgen), Ordnung Chlorococcales. Das Phytoplankton des Süßwassers (in German). E. Schweizerbart'sche Verlagsbuchhandlung. p. 1044.
 | This Chlorophyceae-related article is a stub. You can help Wikipedia by expanding it. |
| Dimorphococcus | |
|---|---|
|
| |
| Dimorphococcus lunatus | |
|
Scientific classification
| |
| (unranked): | Viridiplantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Sphaeropleales |
| Family: | Scenedesmaceae |
| Genus: |
Dimorphococcus Braun |
| Species | |
Dimorphococcus is a genus of fresh water green algae in the family Scenedesmaceae. [1] It is found as a component of the phytoplankton of freshwater ponds, lakes, and peat bogs. It is widespread, but usually not very common. [2]
Dimorphococcus is usually found in small colonies of multiples of four cells, surrounded by a gelatinous mass. Groups of four cells are further attached to each other via mucilaginous strands, which are the remnants of the mother cell wall. [3] Cells are kidney-shaped to heart-shaped, 10–25 μm long and 3–8(–15) μm wide. Each cell is uninucleate (containing one nucleus) and has one parietal chloroplast each with one or more pyrenoids. [2]
Dimorphococcus reproduces asexually via autospores, with four spores produced per mother cell. Autospores are released through a lateral tear in the mother cell wall. After release, the empty cell wall gradually dissolves. [2]
Currently, Dimorphococcus is placed in the family Scenedesmaceae, according to molecular phylogenetic analyses. [4]
One species, Dimorphococcus fritschii, is of uncertain status. The phycologist Chin Chih Jao considered it to have a different structure than other species of Dimorphococcus; accordingly, he placed it into a new genus, Dimorphococcopsis. The species has not been re-investigated and it is possible that the original placement was correct. [5]
- ^ See the NCBI webpage on Dimorphococcus. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
- ^ a b c Guiry, M.D.; Guiry, G.M. "Dimorphococcus". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2023-11-24.
- ^ Matthews, Robin A. (2016). "Freshwater Algae in Northwest Washington, Volume II, Chlorophyta and Rhodophyta". A Collection of Open Access Books and Monographs. Western Washington University. doi: 10.25710/fctx-n773.
- ^ Hegewald, Eberhard; Wolf, Matthias; Keller, Alexander; Friedl, Thomas; Krienitz, Lothar (2010). "ITS2 sequence-structure phylogeny in the Scenedesmaceae with special reference to Coelastrum (Chlorophyta, Chlorophyceae), including the new genera Comasiella and Pectinodesmus". Phycologia. 49 (4): 325–335. Bibcode: 2010Phyco..49..325H. doi: 10.2216/09-61.1. S2CID 85145401.
- ^ Komárek, J.; Fott, B. (1983). Chlorophyceae (Grünalgen), Ordnung Chlorococcales. Das Phytoplankton des Süßwassers (in German). E. Schweizerbart'sche Verlagsbuchhandlung. p. 1044.
|
| This Chlorophyceae-related article is a stub. You can help Wikipedia by expanding it. |