Biology:Mesostigma

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Short description: Genus of algae

Mesostigma
Scientific classification e
(unranked): Viridiplantae
(unranked): Charophyta
Class: Mesostigmatophyceae
Order: Mesostigmatales
Marin & Melkonian[3]
Family: Mesostigmataceae
Marin & Melkonian[2]
Genus: Mesostigma
Lauterborn[1]
Species
  • M. viride Lauterborn

Mesostigma is a genus of unicellular biflagellate freshwater green algae, with a single species Mesostigma viride, covered by an outer layer of basket‐like scales instead of a cell wall.[4][1] (As of February 2022), AlgaeBase classified it as the only genus in the family Mesostigmataceae,[2] the only family in the order Mesostigmatales,[3] the only order in the class Mesostigmatophyceae.[5] It is now considered to be one of the earliest diverging members of green plants/algae (Viridiplantae).

Earlier studies were unable to resolve the position of the species, and it was often placed as a sister to all other green algae, as one of the basal members of the Streptophyta, or as close to Chaetosphaeridium.[6][7][8] More recent studies agree that Mesostigma and Chlorokybus form a clade, being the earliest diverging green plants.[9][10][11][12]

References

  1. 1.0 1.1 Guiry, M.D.; Guiry, G.M. (2024). "Mesostigma". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=113394. 
  2. 2.0 2.1 Guiry, M.D.; Guiry, G.M. (2024). "Mesostigmataceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=113393. 
  3. 3.0 3.1 Guiry, M.D.; Guiry, G.M. (2024). "Mesostigmatales". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=113392. 
  4. Mesostigma viride Genome and Transcriptome Provide Insights into the Origin and Evolution of Streptophyta - NCBI
  5. Guiry, M.D.; Guiry, G.M. (2024). "Mesostigmatophyceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=113391. 
  6. "Mesostigmatophyceae, a new class of streptophyte green algae revealed by SSU rRNA sequence comparisons". Protist 150 (4): 399–417. 1999. doi:10.1016/S1434-4610(99)70041-6. PMID 10714774. 
  7. Jeffrey D. Palmer; Douglas E. Soltis; Mark W. Chase (2004). "The plant tree of life: an overview and some points of view". American Journal of Botany 91 (10): 1437–45. doi:10.3732/ajb.91.10.1437. PMID 21652302. 
  8. Andreas Simon; Gernot Glöckner; Marius Felder; Michael Melkonian; Burkhard Becker (2006). "EST analysis of the scaly green flagellate Mesostigma viride (Streptophyta): Implications for the evolution of green plants (Viridiplantae)". BMC Plant Biology 6: 2. doi:10.1186/1471-2229-6-2. PMID 16476162. 
  9. "A clade uniting the green algae Mesostigma viride and Chlorokybus atmophyticus represents the deepest branch of the Streptophyta in chloroplast genome-based phylogenies". BMC Biol. 5: 2. 2007. doi:10.1186/1741-7007-5-2. PMID 17222354. 
  10. Becker, B.; Marin, B. (2009). "Streptophyte algae and the origin of embryophytes". Annals of Botany 103 (7): 999–1004. doi:10.1093/aob/mcp044. PMID 19273476. 
  11. Sánchez-Baracaldo, Patricia; Raven, John A.; Pisani, Davide; Knoll, Andrew H. (2017-09-12). "Early photosynthetic eukaryotes inhabited low-salinity habitats". Proceedings of the National Academy of Sciences 114 (37): E7737–E7745. doi:10.1073/pnas.1620089114. PMID 28808007. Bibcode2017PNAS..114E7737S. 
  12. 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" (in en). American Journal of Botany 105 (3): 291–301. doi:10.1002/ajb2.1048. ISSN 0002-9122. PMID 29603143. 

External links

  • [1] from Algaebase

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