Sinophysis and Pseudophalacroma are distantly related to typical Dinophysoid dinoflagellates (Dinophysales, Dinophyceae).
نویسندگان
چکیده
Dinophysoid dinoflagellates are usually considered a large monophyletic group. Large subunit and small subunit (SSU) rDNA phylogenies suggest a basal position for Amphisoleniaceae (Amphisolenia,Triposolenia) with respect to two sister groups, one containing most Phalacroma species plus Oxyphysis and the other Dinophysis,Ornithocercus, Dinophysoid dinoflagellates are usually considered a large monophyletic group. Large subunit and small subunit (SSU) rDNA phylogenies suggest a basal position for Amphisoleniaceae (Amphisolenia,Triposolenia) with respect to two sister groups, one containing most Phalacroma species plus Oxyphysis and the other Dinophysis,Ornithocercus, Histioneis,Citharistes and some Phalacroma species. We provide here new SSU rDNA sequences of Pseudophalacroma (pelagic) and Sinophysis (the only benthic dinophysoid genus). Molecular phylogenies support that they are very divergent with respect to the main clade of Dinophysales. Additional molecular markers of these two key genera are needed to elucidate the evolutionary relations among the dinophysoid dinoflagellates. Histioneis,Citharistes and some Phalacroma species. We provide here new SSU rDNA sequences of Pseudophalacroma (pelagic) and Sinophysis (the only benthic dinophysoid genus). Molecular phylogenies support that they are very divergent with respect to the main clade of Dinophysales. Additional molecular markers of these two key genera are needed to elucidate the evolutionary relations among the dinophysoid dinoflagellates.
منابع مشابه
Molecular phylogeny of Sinophysis: Evaluating the possible early evolutionary history of dinophysoid dinoflagellates
Dinophysoids are a group of thecate dinoflagellates with a very distinctive thecal plate arrangement involving a sagittal suture: the so-called dinophysoid tabulation pattern. Although the number and layout of the thecal plates is highly conserved, the morphological diversity within the group is outstandingly high for dinoflagellates. Previous hypotheses about character evolution within dinophy...
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ورودعنوان ژورنال:
- The Journal of eukaryotic microbiology
دوره 59 2 شماره
صفحات -
تاریخ انتشار 2012