Molecular phylogeny and morphology of Carinadinium gen. nov. (Dinophyceae, Gonyaulacales), including marine sand-dwelling dinoflagellate species formerly classified within Thecadinium

Hoppenrath, Mona; Reñé, Albert; Satta, Cecilia Teodora; Yamaguchi, Aika; Селина, М. С.

doi:10.1016/j.ejop.2021.125835

Cited by 3 publications

(5 citation statements)

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“…However, the statistical support was low, and recently Tillmann et al (2021) used the same sequence to place “ Thecadinium ” ovatum in the Protoceratiaceae (as Ceratocorythaceae). Hoppenrath et al (2021) provided SSU and LSU rRNA gene sequences of a new species and three species formerly placed in Thecadinium . These were distantly related to the type species of the genus as well, and Hoppenrath et al (2021) proposed the new genus Carinadinium .…”

Section: Discussionmentioning

confidence: 99%

“…Hoppenrath et al (2021) provided SSU and LSU rRNA gene sequences of a new species and three species formerly placed in Thecadinium . These were distantly related to the type species of the genus as well, and Hoppenrath et al (2021) proposed the new genus Carinadinium . In their SSU rRNA gene phylogeny, the sequences of Carinadinium clustered as sister clade of the Ostreopsidaceae without support.…”

Section: Discussionmentioning

confidence: 99%

“…In the LSU rRNA gene phylogeny, the sequences of Carinadinium clustered as a sister clade of the Protoceratiaceae with higher support. However, Hoppenrath et al (2021) did not consider that Carinadinium should be classified in that family until further molecular data clarified the situation, although they reinterpreted the tabulation of these former species of Thecadinium in agreement with the tabulation of the Protoceratiaceae. These authors interpreted the second anterior intercalary plate (2a) of Carinadinium as the third precingular plate (3 ″ ), suggesting that the species of Carinadinium showed the same plate formula Po, 3 ' 1a 5/6 " 6c 5 ''' 2 '''' as the Protoceratiaceae ( Protoceratium , Pentaplacodinium , and Ceratocorys ).…”

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

“…Several species of the sand‐dwelling genus Thecadinium have been re‐classified in the new genus Carinadinium . In the molecular phylogenies, the sequences of Carinadinium clustered as a sister group of the Protoceratiaceae (Hoppenrath et al, 2021).…”

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Rediscovery of the gonyaulacoid dinoflagellate Schuettiella

Gómez¹,

Gast

2022

J Eukaryotic Microbiology

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The Gonyaulacales includes some of the most intensely investigated genera of harmful dinoflagellates. The knowledge of the evolutionary relationships is necessary, but incomplete because genera such as Schuettiella have not been studied by contemporary methods. The morphology and molecular phylogeny of type species of the genus Schuettiella, S. mitra, have been investigated from Brazil. The first scanning electron micrographs reveal a distinctive thecal ornamentation with sunken stripes and rows with exclamation mark‐shaped pores in the postcingular plates. The Kofoidean plate formula Po, 2′, 1a, 6″ is re‐interpreted as Po, 3′, 1a, 5″, after considering the narrow mid‐ventral plate as homologous to the first apical plate, although it does not reach the apex. In the rRNA gene phylogenies, the sequences of S. mitra clustered as an independent lineage closely related to the globular and planktonic Protoceratiaceae (Ceratocorys, Pentaplacodinium, Protoceratium) and the laterally compressed benthic genus Carinadinium (formerly Thecadinium). Schuettiella and Carinadinium are considered members of the Protoceratiaceae. The possession of a single anterior intercalary plate is an apomorphic trait of this family. This reinforces the value of the number of intercalary plates as a diagnostic character for the classification of the gonyaulacalean families despite the differences in the general appearance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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