Triploceras

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Triploceras
Triploceras gracile 121315544.jpg
Triploceras gracile
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Class: Zygnematophyceae
Order: Desmidiales
Family: Desmidiaceae
Genus: Triploceras
Bailey
Type species
Triploceras verticillatum
(Bailey) Bailey [1]
Species

Triploceras is a genus of desmid (a type of green alga) in the family Desmidiaceae. [2]

Contents

Description

Triploceras exists as solitary cells, which are elongated and constricted at the middle (the constriction called an isthmus); the two halves are called semicells. At tip of either semicell, the cell is tipped with spiny lobes, similar to the polar lobes found in Micrasterias . Along the margins of the semicells are many whorls of processes that may be tipped with spines or teeth. Cells have one chloroplast filling the cell. [3]

Identification

Triploceras is easily recognizable due to its elongated shape and polar lobes. [3] The similar genus Triplastrum also has polar spines, but lacks protuberances along the sides of the cell. [4]

Phylogeny

Phylogenetically, Triploceras is currently known to be embedded within the genus Micrasterias. [3] [4] Despite the similar rod-like shape, it is not closely related to other rod-shaped genera such as Pleurotaenium or Triplastrum. [4]

Distribution

Two species, Triploceras gracile and T. verticillatum are widely distributed throughout the world. Another species, T. splendens is rare and restricted to Southeast Asia and northern Australia. [1]

References

  1. 1 2 3 Guiry, M.D.; Guiry, G.M. "Triploceras". AlgaeBase . University of Galway.
  2. ↑ See the NCBI webpage on Triploceras. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information . Retrieved 2007-03-19.
  3. 1 2 3 Hall, John D.; McCourt, Richard M. (2014). "Chapter 9. Conjugating Green Algae Including Desmids". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. ISBN   978-0-12-385876-4.
  4. 1 2 3 Škaloud, P.; Št'astný, J.; Nemjová, K.; Mazalová, P.; Poulíčková, A.; Neustupa, J. (2012). "Molecular phylogeny of baculiform desmid taxa (Zygnematophyceae)". Plant Systematics and Evolution. 298 (7): 1281–1292. doi:10.1007/s00606-012-0634-4. S2CID   254052751.


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