Dinophysis Ehrenberg (Dinophyceae) in Southern Chile harbours red cryptophyte plastids from Rhodomonas/Storeatula clade.

Harmful Algae
Patricio A DíazFrancisco Rodríguez

Abstract

Photosynthetic species of the dinoflagellate genus Dinophysis are known to retain temporary cryptophyte plastids of the Teleaulax/Plagioselmis/Geminigera clade after feeding the ciliate Mesodinium rubrum. In the present study, partial plastid 23S rDNA sequences were retrieved in Southern Chilean waters from oceanic (Los Lagos region), and fjord systems (Aysén region), in single cells of Dinophysis and accompanying organisms (the heliozoan Actinophrys cf. sol and tintinnid ciliates), identified by means of morphological discrimination under the light microscope. All plastid 23S rDNA sequences (n = 23) from Dinophysis spp. (Dinophysis acuta, D. caudata, D. tripos and D. subcircularis) belonged to cryptophytes from clade V (Rhinomonas, Rhodomonas and Storeatula), although they could not be identified at genus level. Moreover, five plastid sequences obtained from heliozoans (Actinophryida, tentatively identified as Actinophrys cf. sol), and tintinnid ciliates, grouped together with those cryptophyte sequences. In contrast, two additional sequences from tintinnids belonged to other taxa (chlorophytes and cyanobacteria). Overall, the present study represents the first time that red cryptophyte plastids outside of the Teleaulax/Plagio...Continue Reading

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Jan 12, 2017·Harmful Algae·Patricio A DíazBeatriz Reguera
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Citations

Feb 15, 2021·The Science of the Total Environment·Patricio A DíazBeatriz Reguera
May 14, 2021·Harmful Algae·Ángela M BaldrichPatricio A Díaz

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