Hidden biodiversity of the extremophilic Cyanidiales red algae

@article{Ciniglia2004HiddenBO,
  title={Hidden biodiversity of the extremophilic Cyanidiales red algae},
  author={Claudia Ciniglia and Hwan Su Yoon and Antonino Pollio and Gabriele Pinto and Debashish Bhattacharya},
  journal={Molecular Ecology},
  year={2004},
  volume={13}
}
The Cyanidiales is a group of asexual, unicellular red algae, which thrive in acidic and high temperature conditions around hot springs. These unicellular taxa have a relatively simple morphology and are currently classified into three genera, Cyanidium, Cyanidioschyzon and Galdieria. Little is known, however, about the biodiversity of Cyanidiales, their population structure and their phylogenetic relationships. Here we used a taxonomically broadly sampled three‐gene data set of plastid… Expand
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References

SHOWING 1-10 OF 39 REFERENCES
Biogeography of the Cyanidiaceae (Rhodophyta) based on 18S ribosomal RNA sequence data
The only eukaryotes found in highly acidic environments (pH 0.5–3) with elevated temperatures (up to 56 °C) are three species of unicellular red algae: Cyanidioschyzon merolae, Cyanidium caldariumExpand
The single, ancient origin of chromist plastids
TLDR
A taxonomically diverse group of chlorophyll c2-containing protists comprising cryptophyte, haptophyte and stramenopiles algae (Chromista) share a common plastid that most likely arose from a single, ancient secondary endosymbiosis involving a red alga, consistent with Chromista monophyly and implicates secondary endOSymbiotic as an important force in generating eukaryotic biodiversity. Expand
Analyses of ribosomal RNA sequences from glaucocystophyte cyanelles provide new insights into the evolutionary relationships of plastids
TLDR
The phylogenetic analyses show that the cyanelles of C. paradoxa, G. nostochinearum, and G. wittrockiana form a distinct evolutionary lineage; these cyanelle presumably share a monophyletic origin and are interpreted as supporting a near-simultaneous radiation of cyaneles and green and nongreen plastids. Expand
The Genus Cyanidium
One of the strange features of life in the Yellowstone hot springs is that during summer the microbial mats in those springs rich in blue-green algae are usually orange or yellow in color, whereasExpand
Revision of Comparative Traits for the Acido- and Thermophilic Red Algae Cyanidium and Galdieria
TLDR
This would imply that the algal population of Iceland survived several ice ages, and it is not clear how new habitats could be colonized by the two genera or how an exchange between separate populations might be possible. Expand
Rubisco genes indicate a close phylogenetic relation between the plastids of Chromophyta and Rhodophyta
TLDR
The data suggest that the plastids of Chromophyta and Cryptophyta have originated from endosymbiotic unicellular red algae and red and brown algal Rubiscos show a significantly higher degree of homology to that from a hydrogen bacterium than to those from cyanobacteria. Expand
Ribosomal DNA phylogeny of the Bangiophycidae (Rhodophyta) and the origin of secondary plastids.
TLDR
The results support the independent origins of these secondary algal plastids from different members of the Bangiophycidae and are consistent with a monophyletic origin of the Florideophycaceae, which form a sister-group to the Bangia. Expand
A molecular timeline for the origin of photosynthetic eukaryotes.
TLDR
An ancient (late Paleoproterozoic) origin of photosynthetic eukaryotes with the primary endosymbiosis that gave rise to the first alga having occurred after the split of the Plantae from the opisthokonts sometime before 1,558 MYA is supported. Expand
Revision of Cyanidium caldarium. Three species of acidophilic algae
TLDR
A systematic revision of three unicellular eucaryotic algae, often living in mixed population in thermal acidic environment, finds that the family Galdieriaceae is instituted for the first of these algae, whereas the other two algae are included in the family Cyanidiaceae Geitler emend. Expand
Oceanic 18S rDNA sequences from picoplankton reveal unsuspected eukaryotic diversity
TLDR
35 full sequences of the small-subunit (18S) ribosomal RNA gene derived from a picoplanktonic assemblage collected at a depth of 75 m in the equatorial Pacific Ocean are analysed and show that there is a high diversity of picoeukaryotes. Expand
...
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4
...