Gloeochaete

Gloeochaete
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Archaeplastida
Division: Glaucophyta
Class: Glaucophyceae
Order: Gloeochaetales
Family: Gloeochaetaceae
Genus: Gloeochaete
Lagerheim
Species:
G. wittrockiana
Binomial name
Gloeochaete wittrockiana
Lagerheim[1]

Gloeochaete is a rare genus of algae, containing the sole species Gloeochaete wittrockiana.[1] It is found in freshwater habitats, where it grows attached to other algae and aquatic plants. It has a cosmopolitan distribution.[2]

Taxonomy

The genus Gloeochaete was described in 1883 by Gustaf Lagerheim, growing on various Oedogonium in Uppsala, Sweden.[3] The name derives from the Greek gloia ("glue") and chaitê ("hair").[4]

At first, Lagerheim placed the genus was placed in the cyanobacteria family Chroococcaceae, based on its similarity to cyanobacterial genera such as Chroococcus and Gloeocapsa.[3][4] Later, it was placed in the family Tetrasporaceae, under the guise that it was a colorless Tetraspora-like organism with an endosymbiotic cyanobacteria-like organism.[5] Currently, Gloeochaete is considered part of the glaucophyte algae (Glaucophyta), a small but evolutionarily significant group of algae. Together with land plants, green algae, and red algae, they form the clade Archaeplastida, and are important to studying its evolutionary history.[6]

Description

Gloeochaete wittrockiana grows attached to aquatic algae and plants, such as Sphagnum. It consists of single cells or colonies of two, four or eight cells, which are embedded in a layer of mucilage. Each cell has one or two long, gelatinous hairs (variously termed pseudocilia or setae).[2][6] Within each cell, there are a number of sausage-shaped blue-green plastids (also known as cyanelles).[2]

Genome

The plastid DNA of Gloeochaete wittrockiana consists of a simple circular loop that is 143,343 base pairs long. It is relatively conserved with respect to other glaucophyte plastids.[7] Similarly, the mitochondrial DNA of G. wittrockiana is highly conserved and is 36,046 base pairs long.[8]

References

  1. 1 2 Guiry, M.D.; Guiry, G.M. "Gloeochaete Lagerheim, 1883". AlgaeBase. University of Galway. Retrieved 2026-04-15.
  2. 1 2 3 John, David M.; Whitton, Brian A.; Brook, Alan J. (2021). The Freshwater Algal Flora of the British Isles (2 ed.). Cambridge University Press. p. 896. doi:10.1017/CHOL9781108784122. ISBN 978-1-108-78412-2.
  3. 1 2 Lagerheim, G. (1883). "Bidrag till Sveriges algflora". Öfversigt af Kongl. Vetenskaps-Akademiens Förhandlingar. 40 (2): 37–78.
  4. 1 2 Göker, Markus (2026). "Genus Gloeochaete". LPSN – List of Prokaryotic names with Standing in Nomenclature. DSMZ. doi:10.83108/rn.18061 (inactive 16 April 2026). Retrieved 2026-04-16.{{cite web}}: CS1 maint: DOI inactive as of April 2026 (link)
  5. ↑ Bourrelly, P. (1966). Les algues d'eau douce. Initiation à la systématique. Algues vertes. Vol. 1. Paris: Éditions N. Boubée et Cie. pp. 1–512.
  6. 1 2 Jackson, Christopher; Clayden, Susan; Reyes-Prieto, Adrian (2015). "The Glaucophyta: The blue-green plants in a nutshell". Acta Societatis Botanicorum Poloniae. 84 (2): 149–165. doi:10.5586/asbp.2015.020.
  7. ↑ Figueroa-Martinez, Francisco; Jackson, Christopher; Reyes-Prieto, Adrian (2019). "Plastid Genomes from Diverse Glaucophyte Genera Reveal a Largely Conserved Gene Content and Limited Architectural Diversity". Genome Biology and Evolution. 11 (1): 174–188. doi:10.1093/gbe/evy268. PMC 6330054. PMID 30534986.
  8. ↑ Jackson, Christopher J.; Reyes-Prieto, Adrian (2014). "The Mitochondrial Genomes of the Glaucophytes Gloeochaete wittrockiana and Cyanoptyche gloeocystis: Multilocus Phylogenetics Suggests a Monophyletic Archaeplastida". Genome Biology and Evolution. 6 (10): 2774–2785. doi:10.1093/gbe/evu218. PMC 4224345. PMID 25281844.