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Identical ribosomal DNA sequence data from Pfiesteria piscicida (Dinophyceae) isolates with different toxicity phenotypes
September 2003
September 2003
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Abstract
Complete small subunit ribosomal RNA, internal transcribed spacer 1 and 2, 5.8S, and
partial large subunit ribosomal RNA gene sequences were generated from multiple isolates
of Pfiesteria piscicida. Sequences were derived from isolates that have been shown
to be ichthyotoxic as well as isolates that have no history of toxic behavior. All
of the sequences generated were identical for the different cultures, and we therefore
conclude that differences in toxicity seen between isolates of P. piscicida are linked
to factors other than genetic strain variation detectable by ribosomal gene sequence
analyses.