TY - JOUR
TI - Molecular Phylogeny of the Sand-dwelling Dinoflagellate Planodinium striatum and Chrysodinium gen. nov. for Plagiodinium ballux (Dinophyceae)
AU - Gómez, Fernando
AU - Nakamura, Yasuhide
AU - Artigas, Luis F.
TI - Molecular Phylogeny of the Sand-dwelling Dinoflagellate Planodinium striatum and Chrysodinium gen. nov. for Plagiodinium ballux (Dinophyceae)
AB - The molecular phylogeny of the sand-dwelling dinoflagellate Planodinium striatum was investigated from isolates collected in the NE English Channel. In the SSU rRNA gene phylogeny, the sequences of Planodinium clustered with the type species of Plagiodinium, P. belizeanum, and more distantly related to Plagiodinium ballux. Although the SSU rRNA gene sequences of Planodinium showed a high percentage of identity (96%) with partial sequences of species of Podolampas (~1200 base pairs), the SSU rRNA gene phylogenies did not show a relationship with the clade of the Podolampadaceae (Podolampas, Blepharocysta, Roscoffia), neither with the sequences of the sanddwelling genus Cabra. The SSU rRNA gene sequences of Plagiodinium belizeanum and P. ballux showed a low percentage of identity (96%) clustering in separate clades in the SSU rRNA gene phylogeny with Planodinium. The morphology of P. ballux and its generic type differed in the plate arrangement and the morphology of the cingulum, amongst other features. Based on the morphological and molecular differences, we propose the new genus Chrysodinium gen. nov. for P. ballux, with the re-interpreted thecal plate formula Po 3’ 1’’ 7c 2s 5’’’ 1’’’’.
VL - 2019
IS - Volume 58, Issue 3
PY - 2019
SN - 0065-1583
C1 - 1689-0027
SP - 115
EP - 124
DO - 10.4467/16890027AP.19.012.11421
UR - https://ejournals.eu/en/journal/acta-protozoologica/article/molecular-phylogeny-of-the-sand-dwelling-dinoflagellate-planodinium-striatum-and-chrysodinium-gen-nov-for-plagiodinium-ballux-dinophyceae
KW - benthic Dinophyta
KW - microphytobenthos
KW - molecular phylogeny
KW - new genus
KW - Podolampadaceae
KW - psammophilic Dinophyceae.