| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Reclassification of Gonyaulax verior (Gonyaulacales, Dinophyceae) as Sourniaea diacantha gen. et comb. nov.
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| Autores: |
Zhang, Wei
Li, Zhun
Mertens, Kenneth
Derrien, Amelie
Pospelova, Vera
Carbonell-moore, M. Consuelo
Bagheri, Siamak
Matsuoka, Kazumi
Shin, Hyeon Ho
Gu, Haifeng
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| Data: |
2020-05
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| Ano: |
2020
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| Palavras-chave: |
Amylax diacantha
Cysts
Dinoflagellate
Gonyaulax longispina
Molecular phylogeny
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| Resumo: |
Gonyaulax verior was initially described as Amylax diacantha from Belgian coastal waters a century ago but its detailed morphology needed restudy. Here, we established nine strains of G. verior by germinating cysts or isolating cells from localities from the European Atlantic to the Caspian Sea and the Pacific Ocean. Both cyst and thecal morphology were examined by light and scanning electron microscopy. SSU, LSU and/or ITS-5.8S rRNA gene sequences were obtained from all strains. Cells of G. verior have a plate formula of Po, 4′, 2a, 6-7′′, 6C, 6S, 6′′′, 1p, 1′′′′ with an L-type ventral organisation, characterised by two either straight or curved antapical horns of variable length. Cysts of G. verior are oval, smooth and contain one or two yellow accumulation bodies. The maximum-likelihood and Bayesian inference analyses based on SSU and LSU rRNA gene sequences revealed two clades of G. verior, referred to as ribotypes A and B. Genetic distances based on ITS-5.8S rRNA gene sequences within the same ribotype were less than 0.06, but greater than 0.32 between ribotypes. G. verior is reclassified as Sourniaea diacantha gen. et comb. nov., which is attributed to Lingulodiniaceae together with Pyxidinopsis, Lingulodinium and Amylax. Our results suggest that Lingulodiniaceae can be separated from Protoceratiaceae and Gonyaulacaceae based on ventral organisation, apical complex, ventral pore and number of anterior intercalary plates. One strain of S. diacantha was examined for yessotoxin production by LC-MS/MS but did not produce toxin.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00621/73347/72625.pdf
DOI:10.1080/00318884.2020.1735926
https://archimer.ifremer.fr/doc/00621/73347/
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| Editor: |
Informa UK Limited
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| Formato: |
application/pdf
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| Fonte: |
Phycologia (0031-8884) (Informa UK Limited), 2020-05 , Vol. 59 , N. 3 , P. 246-260
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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