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The Klebsormidiaceae are a family containing five genera of charophyte green alga forming multicellular, non-branching filaments.[3][4] The genus Chlorokybus was previously included as well,[5] but this problematic and poorly known genus is now placed in a separate class Chlorokybophyceae.

Klebsormidiaceae are the sister to the Phragmoplastophyta. Their ancestor was probably a multicellular freshwater green algae, and multicellularity will be retained in all of its descendants except the Zygnematophyceae, which reverted back to unicellularity. Together with the unicellular Chlorokybophytina (Mesostigmatophyceae, Spirotaenia and Chlorokybophyceae), they comprise the Streptophyta.

The genera Koliella and Raphidonema were formerly classified as close relatives of Klebsormidium, based on similarities in cell division. However, analysis of both nuclear and chloroplast DNA shows that both of these genera belong to the class Trebouxiophyceae and are not charophytes.[6][7] Interfilum (previously in Ulotrichaceae) also emerged within this group.[8][9]



Klebsormidiophyceae/ Elakatotrichaceae  
















  1. ^ Guiry, M.D.; Guiry, G.M. "Klebsormidiaceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  2. ^ Stewart, K.D.; Mattox, K.R. (1975). "Comparative cytology, evolution and classification of the green algae with some consideration of the origin of other organisms with chlorophylls a and b". The Botanical Review. 41: 104–135. doi:10.1007/bf02860837. S2CID 22482804.
  3. ^ "Klebsormidiales".
  4. ^ Sluiman, Hans J.; Guihal, Caroline; Mudimu, Opayi (2008). "Assessing phylogenetic affinities and species delimitations in Klebsormidiales (Streptophyta): Nuclear-encoded rDNA phylogenies and ITS secondary structure models in Klebsormidium, Hormidiella, and Entransia". Journal of Phycology. 44 (1): 183–195. doi:10.1111/j.1529-8817.2007.00442.x. PMID 27041055.
  5. ^ van den Hoek, C.; Mann, D.G.; Jahns, H.M. (1995). Algae: An Introduction to Phycology. Cambridge: Cambridge University Press. p. 455.
  6. ^ Katana, A.; Kwiatowski, J.; Spalik, K.; Zakryś, B.; Szalacha, E.; Szymańska, H. (2001). "Phylogenetic position of Koliella (Chlorophyta) as inferred from nuclear and chloroplast small subunit rDNA". Journal of Phycology. 37 (3): 443–451. doi:10.1046/j.1529-8817.2001.037003443.x. S2CID 84445729.
  7. ^ Eliáš, Marek; Neustupa, Jiří (2009). "Pseudomarvania, gen. nov. (Chlorophyta, Trebouxiophyceae), a new genus for "budding" subaerial green algae Marvania aerophytica Neustupa et Šejnohová and Stichococcus ampulliformis Handa". Fottea. 9 (2): 169–177. doi:10.5507/fot.2009.017.
  8. ^ Gitzendanner, Matthew A.; Soltis, Pamela S.; Wong, Gane K.-S.; Ruhfel, Brad R.; Soltis, Douglas E. (2018). "Plastid phylogenomic analysis of green plants: A billion years of evolutionary history". American Journal of Botany. 105 (3): 291–301. doi:10.1002/ajb2.1048. ISSN 0002-9122. PMID 29603143.
  9. ^ Mikhailyuk, Tatiana; Lukešová, Alena; Glaser, Karin; Holzinger, Andreas; Obwegeser, Sabrina; Nyporko, Svetlana; Friedl, Thomas; Karsten, Ulf (2018). "New Taxa of Streptophyte Algae (Streptophyta) from Terrestrial Habitats Revealed Using an Integrative Approach". Protist. 169 (3): 406–431. doi:10.1016/j.protis.2018.03.002. ISSN 1434-4610. PMC 6071840. PMID 29860113.

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