Synurid
Template:Short description Template:Automatic taxobox
The synurids (order Synurales) are a small group of heterokont algae, found mostly in freshwater environments, characterized by cells covered in silica scales.[1]
Characteristics
They are covered in silicate scales and spines. In Synura, these are formed on the surface of the chloroplasts,[2] two of which are usually present, but sometimes only one divided into two lobes is seen. The cells have two heterokont flagella, inserted parallel to one another at the anterior, whose ultrastructure is a distinguishing characteristic of the group. Both asexual and isogamous sexual reproduction occur.
Morphology
[[File:2023 Synurophyte.svg|center|thumb|upright=2|
Script error: No such module "Check for unknown parameters".Template:Ordered list
Classification
Synurales are divided into three families, each with one genus:[3]
- Family Mallomonadaceae Template:Au
- Family Synuraceae Template:Au
- Family Neotessellaceae Template:Au
- Neotessella Template:Au (=Tessella Template:Au)
History
The genus Synura was proposed in 1834 by the German microscopist Christian Gottfried Ehrenberg (1795–1876).[4]
The synurids were originally included among the golden algae in the order Ochromonadales as the family Mallomonadaceae or as the family Synuraceae . They were formally defined as a separate group by Andersen in 1987, who placed them in their own class Synurophyceae, based on an earlier approach of more narrowly defining major lineages of chrysophyte algae by British phycologist David Hibberd.[5][6]
The Chrysophyceae and Synurophyceae are currently recognized as closely related taxa within the Stramenopiles.[7][8] Present classifications include the synurids as an order (Synurales) within Chrysophyceae.[1][9]
References
External links
Template:Heterokont Template:Taxonbar
- ↑ a b Cite error: Invalid
<ref>tag; no text was provided for refs namedMorphoSynurapetersenii - ↑ Script error: No such module "citation/CS1".
- ↑ Template:Cite Q
- ↑ See:
- Script error: No such module "Citation/CS1". From p. 281: Ehrenberg created a new family, Volvocina, " ... wozu ich die vier neuen Gattungen Chlamidomonas, Syncrypta, Synura, und Uroglena stelle." ( ... into which I place the four new genera Chlamidomonas, Syncrypta, Synura, and Uroglena.) [Note: According to p. 145, Ehrenberg's paper was first presented in 1832, revised somewhat, and published in 1834.]
- See also: AlgaeBase: Synura Ehrenberg, 1834
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs named8phyla