Mesostigma

Genus of algae

Mesostigma
Scientific classification Edit this classification
(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] AlgaeBase classifies 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. ^ a b Guiry, M.D.; Guiry, G.M. "Mesostigma". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  2. ^ a b Guiry, M.D.; Guiry, G.M. "Mesostigmataceae". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  3. ^ a b Guiry, M.D.; Guiry, G.M. "Mesostigmatales". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.
  4. ^ Mesostigma viride Genome and Transcriptome Provide Insights into the Origin and Evolution of Streptophyta - NCBI
  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.

External links

  • [1] from Algaebase
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Classification of Archaeplastida or Plantae s.l.
Domain
Archaea
Bacteria
Eukaryota
(major groups
Excavata
Diaphoretickes
Hacrobia
Rhizaria
Alveolata
Stramenopiles
Plants
Amorphea
Amoebozoa
Opisthokonta
Animals
Fungi)
Archaeplastida
Picozoa
Rhodelphidia
Rhodophyta
(red algae)
Glaucophyta
incertae sedis
Viridiplantae
or Plantae s.s.
(green algae &
land plants)
Prasinodermophyta
 Chlorophyta
Prasinophytina
Chlorophytina
Streptophyta
Phragmoplastophyta
Anydrophyta
Embryophyta
(land plants)
  • (see below↓)
Embryophytes or Plantae sensu strictissimo
Bryophytes
Marchantiophyta
(liverworts)
Anthocerotophyta
(hornworts)
Bryophyta
(mosses)
 Polysporangiophytes
Protracheophytes*
Tracheophytes
(vascular plants)
Paratracheophytes*
Eutracheophytes
Lycophytes
Euphyllophytes
Moniliformopses
Lignophytes
Progymnosperms*
  • †Noeggerathiopsida
  • †Aneurophytopsida
  • †Archaeopteridopsida
  • †Protopityales
Spermatophytes
(seed plants)
Pteridosperms*
(seed ferns)
and other extinct
seed plant groups
Acrogymnospermae
(living gymnosperms)
Angiospermae
(flowering plants)
Taxon identifiers
Mesostigma
Mesostigma viride


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