Streptophyta

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Streptophyta
Streptophyta-x4.jpg
Scientific classification
(unranked): Archaeplastida
Kingdom: Plantae
(unranked): Streptophyta
Jeffrey 1967,[1] sensu Leliaert et al. 2012
Divisions

Charophyta
Embryophyta

Synonyms
  • Anthocerophyta Sluiman 1985[2]
  • Charophyta Migula 1897 sensu Lewis & McCourt 2004; Karol et al. 2009

Streptophyta or Streptophytina, informally the streptophytes (from the Greek strepto, for twisted, i.e., the morphology of the sperm of some members), is an unranked clade of plants. The composition of the clade varies considerably between authors. One common definition includes the land plants, the embryophytes (bryophytes and vascular plants)[3] and the green algal group Charophyta, which includes the Mesostigmatales, Chlorokybales, Klebsormidiales, Zygnematales, Coleochaetales and Charales.[4]

Classifications[edit]

The composition of the Streptophyta and similar groups (Streptophytina, Charophyta) varies in each classification.[5][citation needed] Some authors are more restrictive, including only the Charales and Embryophyta (e.g., Streptophyta Jeffrey 1967; Adl et al. 2012, Streptophytina Lewis & McCourt 2004), others include more groups (e.g., Charophyta Lewis & McCourt 2004; Karol et al. 2009; Adl et al. 2012, Streptophyta Bremer, 1985; de Reviers 2002; Leliaert et al. 2012, Streptobionta Kenrick & Crane 1997; some authors use this broader definition, but exclude the Embryophyta, e.g., Charophyta Cavalier-Smith 1993;[6] Leliaert et al. 2012, Charophyceae Mattox & Stewart, 1984, Streptophycophytes de Reviers, 2002).

Jeffrey, 1967[edit]

Lewis & McCourt 2004[edit]

Leliaert et al. 2012[edit]

Adl et al. 2012[edit]

References[edit]

  1. ^ Jeffrey, C. The origin and differentiation of the Archegoniate land plants: A second contribution. Kew Bull. 21, 335-349 (1967).
  2. ^ Sluiman, H. J. 1985. A cladistic evaluation of the lower and higher green plants (Viridiplantae). Plant Syst. Evol. 149:217-232.
  3. ^ Green plants
  4. ^ Turmel M, Otis C, Lemieux C (2005). "The complete chloroplast DNA sequences of the charophycean green algae Staurastrum and Zygnema reveal that the chloroplast genome underwent extensive changes during the evolution of the Zygnematales". BMC Biol. 3: 22. doi:10.1186/1741-7007-3-22. PMC 1277820. PMID 16236178. 
  5. ^ http://www.protisten.de/german/docs/Phylogeny_in_Streptophyta.pdf
  6. ^ Cavalier-Smith, T. (1993). The origin, losses and gains of chloroplasts. In: Origins of plastids (pp. 291-348). Springer US.
  • Bremer, K. (1985) Summary of green plant phylogeny and classification. Cladistics 1:369-385.
  • Lewis, L.A, McCourt, R.M. (2004) Green algae and the origin of land plants. AMERICAN JOURNAL OF BOTANY 91 (10): 1535-1556 OCT.
  • Adl, S.M.; Simpson, A.G.B.; Lane, C.E.; Lukeš, J.; Bass, D.; Bowser, S.S.; Brown, M.W.; Burki, F.; Dunthorn, M.; Hampl, V.; Heiss, A.; Hoppenrath, M.; Lara, E.; le Gall, L.; Lynn, D.H.; McManus, H.; Mitchell, E.A.D.; Mozley-Stanridge, S.E.; Parfrey, L.W.; Pawlowski, J.; Rueckert, S.; Shadwick, L.; Schoch, C.L.; Smirnov, A.; Spiegel, F.W. (2012), "The Revised Classification of Eukaryotes", Journal of Eukaryotic Microbiology 59 (5): 429–514, doi:10.1111/j.1550-7408.2012.00644.x 
reproductive structure of Chara

External links[edit]