Molecular evidence that plastids in the toxin-producing dinoflagellate genus Dinophysis originate from the free-living cryptophyte Teleaulax amphioxeia

Environmental Microbiology
Sven Janson

Abstract

Some species of the dinoflagellate genus Dinophysis form red tides and are toxin producers with a great environmental impact. The dinoflagellates as a group display high plastid diversity. Several cases indicate that plastids have been replaced. In the case of the genus Dinophysis, the plastids show characteristics of a plastid originating from a cryptophyte. Recent molecular evidence showed that the plastid indeed originates from a cryptophyte, but the source could not be identified to species or genus level. The data presented here show that both a 799 bp region of the psbA gene and 1,221 bp region of the 16S rRNA gene from Dinophysis spp. are identical to the same loci in Teleaulax amphioxeia SCCAP K434. This strongly indicates that the plastid was acquired recently in Dinophysis and may be a so-called kleptoplastid, specifically originating from a species of Teleaulax.

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Citations

Nov 22, 2011·Applied and Environmental Microbiology·Goh NishitaniTakashi Gojobori
Oct 1, 2008·Journal of Phycology·Myung Gil ParkWonho Yih
May 9, 2006·The Journal of Eukaryotic Microbiology·Kamran Shalchian-TabriziKjetill S Jakobsen
May 17, 2011·The Journal of Eukaryotic Microbiology·Conny O Sjöqvist, Tore J Lindholm
Apr 26, 2011·Research in Microbiology·Senjie Lin
Jul 6, 2006·FEMS Microbiology Ecology·Susanna Minnhagen, Sven Janson
Jun 6, 2015·PloS One·Jong Im KimWoongghi Shin

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