Cyanidiales
| Cyanidiales | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cyanidium sp. |
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| Systematics | ||||||||||||
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| Scientific name of the subdivision | ||||||||||||
| Cyanidiophytina | ||||||||||||
| HSYoon , KMMüller , RGSheath , FDOtt & D.Bhattacharya (2006) | ||||||||||||
| Scientific name of the class | ||||||||||||
| Cyanidiophyceae | ||||||||||||
| Merola , Castaldo , De Luca , Gambardella , Musacchio & Taddei (1981) | ||||||||||||
| Scientific name of the order | ||||||||||||
| Cyanidiales | ||||||||||||
| T.Christensen (1962) |
The Cyanidiales are an order of unicellular red algae . They live in volcanic areas in very acidic and moderately hot springs (pH 0.2 to 4, up to 56 ° C). There are 7 known species (as of July 2018).
According to molecular genetic data, the Cyanidiales are probably the most original eukaryotic algae , which separated from the other red algae almost 1.4 billion years ago. At that time, apart from red algae, there were only cyanobacteria as photosynthetic organisms. These cannot thrive at pH <5. Even today, the Cyanidiales are the only phototrophic microorganisms in their habitat .
Each cell contains only one nucleus , one chloroplast and one mitochondrion .
Systematics
The order Cyanidiales was established in 1962 by Tyge Ahrengot Christensen . It is divided into two families:
- Family Cyanidiaceae , with two genera
- Cyanidioschyzone , with the only kind of Cyanidioschyzone merolae
- Cyanidium , of two types
- Family Galdieriaceae, with one genus:
- Galdieria , with four species
literature
- Richard W. Castenholz, Timothy R. McDermott: The Cyanidiales: Ecology, Biodiversity, and Biogeography . In: Joseph Seckbach, David J. Chapman (Eds.): Red Algae in the Genomic Age. Springer, Dordrecht 2010, pp. 357-271. ( Abstract )
- Mitsunobu Kamiya, Sandra C. Lindstrom, Takeshi Nakayama, Akiko Yokoyama, Showe-Mei Lin, Michael D. Guiry, Carlos Frederico D. Gurgel, John Marinus Huisman, Taiju Kitayama, Masahiro Suzuki, Tae Oh Cho, Wolfgang Frey: Rhodophyta. In: W, Frey (Ed.): Syllabus of Plant Families , 13th edition. Part 2/2: Photoautotrophic Eukaryotic Algae. Stuttgart: Borntraeger Science Publishers. ISBN 978-3-443-01094-2 . 2017., pages 19-20. (Systematic classification)
- Robert Edward Lee: Phycology . 5th edition, Cambridge University Press, Cambridge 2018, p. 104 f. (Description)
Individual evidence
- ↑ a b AlgaeBase Taxonomy Browser: Cyanidiales , accessed July 23, 2018.
