Complex array of endobionts in Petalomonas sphagnophila, a large heterotrophic euglenid protist from Sphagnum-dominated peatlands

@article{Kim2010ComplexAO,
  title={Complex array of endobionts in Petalomonas sphagnophila, a large heterotrophic euglenid protist from Sphagnum-dominated peatlands},
  author={Eunsoo Kim and Jong Soo Park and Alastair G. B. Simpson and Shigeru Matsunaga and Masakatsu Watanabe and Akio Murakami and Katrin Sommerfeld and Naoko T. Onodera and John M. Archibald},
  journal={The ISME Journal},
  year={2010},
  volume={4},
  pages={1108-1120}
}
Petalomonas sphagnophila is a poorly studied plastid-lacking euglenid flagellate living in Sphagnum-dominated peatlands. Here we present a broad-ranging microscopic, molecular and microspectrophotometric analysis of uncultured P. sphagnophila collected from four field locations in Nova Scotia, Canada. Consistent with its morphological characteristics, 18S ribosomal DNA (rDNA) phylogenies indicate that P. sphagnophila is specifically related to Petalomonas cantuscygni, the only other Petalomonas… Expand
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References

SHOWING 1-10 OF 51 REFERENCES
Petalomonas sphagnophila (Euglenophyta) and its endocytobiotic cyanobacteria: a unique form of symbiosis
TLDR
The association between P. sphagnophila and these cyanobacteria appears to be a unique, transient, relatively undeveloped form of endosymbiosis. Expand
Phylogenetic Characterization and Prevalence of “Spirobacillus cienkowskii,” a Red-Pigmented, Spiral-Shaped Bacterial Pathogen of Freshwater Daphnia Species
TLDR
The broad geographic distribution, wide host range, and high virulence of S. cienkowskii suggest it plays an important role in the ecology and evolution of daphniids. Expand
Ultrastructure and molecular phylogeny of Calkinsia aureus: cellular identity of a novel clade of deep-sea euglenozoans with epibiotic bacteria
TLDR
The authors' ultrastructural description of C. aureus possesses all of the synapomorphies for the Euglenozoa, but lacks traits that are specific to any of the three previously recognized euglenozoan subgroups. Expand
PHYLOGENY OF PHAGOTROPHIC EUGLENIDS (EUGLENOZOA): A MOLECULAR APPROACH BASED ON CULTURE MATERIAL AND ENVIRONMENTAL SAMPLES 1
TLDR
Sequence analyses revealed an increasing genetic diversity among euglenid SSU rDNA sequences compared with other well‐known eukaryotic groups, reflecting an equally broad diversity of morphological characters among eUGlenid phagotrophs. Expand
Ultrastructural and microspectrophotometric characterization of multiple species of cyanobacterial photosymbionts coexisting in the colonial ascidian Trididemnum clinides (Tunicata, Ascidiacea, Didemnidae)
TLDR
In T. clinides, the outer and inner photosymbionts in the tunic have different photosynthetic pigments, which adapt to each microhabitat, thereby sharing the incident light resources effectively. Expand
Bacterial Endosymbionts of Free-living Amoebae1
TLDR
Complete genome sequence analysis of a chlamydia-related symbiont of Acanthamoeba sp. Expand
Phylogeny of Phagotrophic Euglenids (Euglenozoa) as Inferred from Hsp90 Gene Sequences
TLDR
Phylogenetic analyses confirmed a closer relationship between kinetoplastids and diplonemids than to euglenids, and supported previous views regarding the branching order among primarily bacteriovorous, primarily eukaryovorous, and photosynthetic eUGlenids. Expand
“Candidatus Cryptoprodotis polytropus,” A Novel Rickettsia‐Like Organism in the Ciliated Protist Pseudomicrothorax dubius (Ciliophora, Nassophorea)
TLDR
The presence of a previously unknown RLO in ciliates sheds a new light on the possible role of protists as transient hosts, vectors or natural reservoir for some economically important pathogens. Expand
Shimazuella kribbensis gen. nov., sp. nov., a mesophilic representative of the family Thermoactinomycetaceae.
TLDR
It is suggested that strain A 9500T represents a novel species in a new genus with the name Shimazuella kribbensis gen. nov, which formed a distinct clade in a phylogenetic tree based on 16S rRNA gene sequences. Expand
Extremely Acidophilic Protists from Acid Mine Drainage Host Rickettsiales-Lineage Endosymbionts That Have Intervening Sequences in Their 16S rRNA Genes
TLDR
A molecular phylogenetic survey of extremely acidic (pH < 1), metal-rich acid mine drainage habitats in the Richmond Mine at Iron Mountain, Calif., detected 16S rRNA gene sequences of a novel bacterial group belonging to the order Rickettsiales in the Alphaproteobacteria, the first report of an endosymbiotic relationship in an extremely acidic habitat. Expand
...
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4
5
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