Protistan parasite QPX of hard-shell clam Mercenaria mercenaria is a member of Labyrinthulomycota

Ragan, Mark A., MacCallum, Greg S., Murphy, Colleen A., Cannone, Jamie J., Gutell, Robin R. and McGladdery, Sharon E. (2000) Protistan parasite QPX of hard-shell clam Mercenaria mercenaria is a member of Labyrinthulomycota. Diseases of Aquatic Organisms, 42 3: 185-190. doi:10.3354/dao042185

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Author Ragan, Mark A.
MacCallum, Greg S.
Murphy, Colleen A.
Cannone, Jamie J.
Gutell, Robin R.
McGladdery, Sharon E.
Title Protistan parasite QPX of hard-shell clam Mercenaria mercenaria is a member of Labyrinthulomycota
Formatted title
Protistan parasite QPX of hard-shell clam Mercenaria mercenaria is a member of Labyrinthulomycota
Journal name Diseases of Aquatic Organisms   Check publisher's open access policy
ISSN 0177-5103
1616-1580
Publication date 2000-09-01
Year available 2000
Sub-type Article (original research)
DOI 10.3354/dao042185
Open Access Status File (Publisher version)
Volume 42
Issue 3
Start page 185
End page 190
Total pages 6
Place of publication Oldendorf, Germany
Publisher Inter-Research
Language eng
Abstract Biomass of the protistan parasite QPX (quahaug parasite X) of hard-shell clam Mercenaria mercenaria was enriched from in vitro culture. The nuclear gene encoding the 18S RNA of the small-subunit ribosomal (ssu-rDNA) was recovered using the polymerase chain reaction (PCR) and sequenced. Phylogenetic analysis clearly showed that QPX is a member of phylum Labyrinthulomy-cota, within which it appears as a specific relative of Thraustochytrium pachydermum. These results confirm the provisional assignment of QPX to the Labyrinthulomycota made previously on the basis of morphological and ultrastructural characters found in some, but not all, geographic isolates.
Formatted abstract
Biomass of the protistan parasite QPX (quahaug parasite X) of hard-shell clam Mercenaria mercenaria was enriched from in vitro culture. The nuclear gene encoding the 18S RNA of the small-subunit ribosomal (ssu-rDNA) was recovered using the polymerase chain reaction (PCR) and sequenced. Phylogenetic analysis clearly showed that QPX is a member of phylum Labyrinthulomycota, within which it appears as a specific relative of Thraustochytrium pachydermum. These results confirm the provisional assignment of QPX to the Labyrinthulomycota made previously on the basis of morphological and ultrastructural characters found in some, but not all, geographic isolates.
Keyword QPX, quahaug parasite X
Mercenaria mercenaria
Hard-shell clam
Small-subunit ribosomal DNA
Labyrinthulomycota
Thraustochytrium pachydermum
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID R01 GM048207
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Institute for Molecular Bioscience - Publications
 
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