Sorodiplophrys stercorea: Another Novel Lineage of Sorocarpic Multicellularity

Sorodiplophrys stercorea is a sorocarpic organism that utilizes filose pseudopodia for locomotion and absorptive nutrition. It has traditionally been considered to be a member of the Labyrinthulae based on its morphology. Its closest relatives were thought to be species in the taxon Diplophrys. Sinc...

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Bibliographic Details
Published in:The Journal of eukaryotic microbiology 2016-09, Vol.63 (5), p.623-628
Main Authors: Tice, Alexander K., Silberman, Jeffrey D., Walthall, Austin C., Le, Khoa N. D., Spiegel, Frederick W., Brown, Matthew W.
Format: Article
Language:English
Subjects:
Aggregation
amoeba
Animals
Base Sequence
Cattle - parasitology
DNA, Protozoan - isolation & purification
DNA, Ribosomal
Genes, rRNA - genetics
Horses - parasitology
Labyrinthulomycetes
Mississippi
Phylogeny
Rhizaria - classification
SSU rDNA
Stramenopiles
Stramenopiles - classification
Stramenopiles - cytology
Stramenopiles - genetics
Stramenopiles - isolation & purification
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Summary:Sorodiplophrys stercorea is a sorocarpic organism that utilizes filose pseudopodia for locomotion and absorptive nutrition. It has traditionally been considered to be a member of the Labyrinthulae based on its morphology. Its closest relatives were thought to be species in the taxon Diplophrys. Since the genus Diplophrys has been shown to be paraphyletic and S. stercorea has pseudopodia similar to some members of Rhizaria, we examined its relationship with other eukaryotes. We obtained four isolates from the dung of cow and horse, brought each into monoeukaryotic culture, and sequenced their SSU rRNA gene for phylogenetic analysis. All our isolates were shown to form a monophyletic group in the Labyrinthulae, nested in the Amphifiloidea clade. Our results demonstrate that Sorodiplophrys is more closely related to species of the genus Amphifila than to Diplophrys and represents an additional independent origin of sorocarpic multicellularity among eukaryotes. This study represents the first confirmed sorocarpic lifestyle in the Stramenopiles.
ISSN:1066-5234
1550-7408
DOI:10.1111/jeu.12311