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Mesostigma

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Mesostigma
Scientific classification Edit this classification
Clade: Viridiplantae
(unranked): Charophyta
Class: Mesostigmatophyceae
Order: Mesostigmatales
Family: Mesostigmataceae
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.[2][1] As of February 2022, AlgaeBase classified it as the only genus in the family Mesostigmataceae,[3] the only family in the order Mesostigmatales,[4] 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. ^ a b Guiry, M.D.; Guiry, G.M. "Mesostigma". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  2. ^ Mesostigma viride Genome and Transcriptome Provide Insights into the Origin and Evolution of Streptophyta - NCBI
  3. ^ Guiry, M.D.; Guiry, G.M. "Mesostigmataceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  4. ^ Guiry, M.D.; Guiry, G.M. "Mesostigmatales". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  5. ^ Guiry, M.D.; Guiry, G.M. "Mesostigmatophyceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  6. ^ Marin B, Melkonian M (1999). "Mesostigmatophyceae, a new class of streptophyte green algae revealed by SSU rRNA sequence comparisons". Protist. 150 (4): 399–417. 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. PMC 1413533. PMID 16476162.
  9. ^ Lemieux C, Otis C, Turmel M (2007). "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. doi:10.1186/1741-7007-5-2. PMC 1781420. 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. PMC 2707909. 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. Bibcode:2017PNAS..114E7737S. doi:10.1073/pnas.1620089114. PMC 5603991. PMID 28808007.
  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". American Journal of Botany. 105 (3): 291–301. doi:10.1002/ajb2.1048. ISSN 0002-9122. PMID 29603143.
  • [1] from Algaebase


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