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Spirotaenia

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EntityQ1743499· pop 16· linked from 376 articles

Spirotaenia

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Spirotaenia is a genus of basal unicellular green algae that may be sister to the Chlorokybophyceae. It was previously considered to be part of the Zygnemataceae. It is sexually conjugating, a mode of reproduction that was previously only known in the Zygnemataceae/Mesotaeniaceae, the sister groups to the land plants. This is surprising, as Spirotaenia is much more basal. The conjugating process is substantially aberrant. Spirotaenia may actually be more than one distinct lineage which may not be closely related.

Species

GENUS

  1. KingdomPlantae
  2. PhylumCharophyta
  3. ClassZygnematophyceae
  4. OrderZygnematales
  5. FamilyMesotaeniaceae
Habitatfreshwater
Observations92
Observations recorded377

Spirotaenia ist eine Algengattung aus der Ordnung der Zieralgen und der Familie der Mesotaeniaceae. Spirotaenia ist eine Algengattung grüner Algen, die offenbar basal im Stammbaum der Chloroplastida (auch Viridiplantae genannt) stehen und möglicherweise eine Schwestergruppe der Chlorokybophyceae darstellt. Die Gattung wurde früher zur Ordnung der Zieralgen (Zygnemataceae) gestellt. Es wird sexuelle Konjugation beobachtet, eine Fortpflanzungsart, die bisher nur bei den Zieralgen und Mesotaeniaceen, den Schwestergruppen der Landpflanzen (Embryophyta), bekannt war. Überraschenderweise hatte sich dann herausgestellt, dass Spirotaenia wesentlich basaler ist. Tatsächlich gibt es wesentliche Abweichungen im Konjugationsprozess verglichen mit den anderen genannten Gruppen.

via GBIF

Museum specimens

Specimen records
28
With media
21
Family
Mesotaeniaceae
Collections
US, NY, UESC, JBRJ, LD, OSC
Recorded in
United States, Sweden, Brasil, SuéCia, Canada
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Wikidata facts

Instance of
taxon
Parent taxon
Mesotaeniaceae
Image
24Messbild40x203x28bSpirotaenia condensata Breb.jpg
Show 6 more facts
taxon rank
genus
taxon name
Spirotaenia
Commons category
Spirotaenia
AlgaeBase URL
www.algaebase.org/search/genus/detail/?genus_id=43559
different from
Spirogyra
taxon common name
スピロテニア属
Sources (2)

via Wikidata · CC0

~1 min read

Encyclopedic overview

2 sections
Contents
  • Phylogeny
  • References

Spirotaenia is a genus of basal unicellular green algae that may be sister to the Chlorokybophyceae. It was previously considered to be part of the Zygnemataceae. It is sexually conjugating, a mode of reproduction that was previously only known in the Zygnemataceae/Mesotaeniaceae, the sister groups to the land plants. This is surprising, as Spirotaenia is much more basal. The conjugating process is substantially aberrant. Spirotaenia may actually be more than one distinct lineage which may not be closely related.

==Phylogeny== {{barlabel|size=11|at=5.5|label="Green algae"|cladogram= {{clade |label1=Viridiplantae |sublabel1=Plantae |1= {{clade |label1=Prasinodermophyta |1= |2= }} }} }}

Excerpted from Wikipedia’s “Spirotaenia” article, available under the CC BY-SA 4.0 licence.

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