Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida.
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| Format: | Artículo científico |
| Language: | en |
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Journal of phycology
2025
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| author | Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian |
| author_facet | Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian |
| collection | PubMed - marine biology |
| contents | Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida. Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian Phylogeny Dinoflagellida DNA, Ribosomal Spacer Pacific Ocean Vietnam Sequence Analysis, DNA Atlantic Ocean DNA, Ribosomal Mediterranean Sea France Species Specificity Japan Molecular Sequence Data Ceratocorys armata, C. gourretii, and C. horrida have historically been treated as distinct species based on morphology. Both field samples and cultured strains, however, exhibit continuous morphological variation and intergradations between these taxa. Here, strains from Viet Nam, Japan (Pacific Ocean), and France (Mediterranean Sea, Atlantic Ocean) were analyzed using integrated morphomolecular approaches. Cultured strains revealed morphological intergradations from C. horrida to C. armata and from C. armata to C. gourretii. Phylogenetic analysis based on the ITS1-5.8S-ITS2 rDNA region sequences and the SSU (18S) and LSU (28S) nuclear rDNA gene sequences confirmed the genetic identity of these three taxa for these markers. The ITS2 secondary structure comparisons-including C. malayensis from Viet Nam and Malaysia-further supported their conspecificity, while validating C. malayensis as a distinct species. Based on these data, we have proposed to treat them as formae: C. horrida f. horrida, C. horrida f. armata, and C. horrida f. gourretii. Furthermore, our results indicated that C. malayensis strains from Viet Nam are non-toxic. We have also provided morphological descriptions and illustrations of C. bipes and C. magna, two species rarely reported in the Asia-Pacific region, enhancing the taxonomic clarity of the genus. |
| format | Artículo científico |
| id | pubmed_41347297 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Journal of phycology |
| record_format | pubmed |
| spellingShingle | Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida. Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian Phylogeny Dinoflagellida DNA, Ribosomal Spacer Pacific Ocean Vietnam Sequence Analysis, DNA Atlantic Ocean DNA, Ribosomal Mediterranean Sea France Species Specificity Japan Molecular Sequence Data Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida. Nguyen-Ngoc, Lam Larsen, Jacob Doan-Nhu, Hai Mertens, Kenneth Neil Lundholm, Nina Nguyen, Vy Xuan Krock, Bernd Pham, Hung Manh Iwataki, Mitsunori Plewe, Sascha Bilien, Gwenael Dao, Ha Viet Huynh-Thi, Duyen Ngoc Tran-Thi, Van Le Probert, Ian Phylogeny Dinoflagellida DNA, Ribosomal Spacer Pacific Ocean Vietnam Sequence Analysis, DNA Atlantic Ocean DNA, Ribosomal Mediterranean Sea France Species Specificity Japan Molecular Sequence Data Ceratocorys armata, C. gourretii, and C. horrida have historically been treated as distinct species based on morphology. Both field samples and cultured strains, however, exhibit continuous morphological variation and intergradations between these taxa. Here, strains from Viet Nam, Japan (Pacific Ocean), and France (Mediterranean Sea, Atlantic Ocean) were analyzed using integrated morphomolecular approaches. Cultured strains revealed morphological intergradations from C. horrida to C. armata and from C. armata to C. gourretii. Phylogenetic analysis based on the ITS1-5.8S-ITS2 rDNA region sequences and the SSU (18S) and LSU (28S) nuclear rDNA gene sequences confirmed the genetic identity of these three taxa for these markers. The ITS2 secondary structure comparisons-including C. malayensis from Viet Nam and Malaysia-further supported their conspecificity, while validating C. malayensis as a distinct species. Based on these data, we have proposed to treat them as formae: C. horrida f. horrida, C. horrida f. armata, and C. horrida f. gourretii. Furthermore, our results indicated that C. malayensis strains from Viet Nam are non-toxic. We have also provided morphological descriptions and illustrations of C. bipes and C. magna, two species rarely reported in the Asia-Pacific region, enhancing the taxonomic clarity of the genus. |
| title | Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida. |
| topic | Phylogeny Dinoflagellida DNA, Ribosomal Spacer Pacific Ocean Vietnam Sequence Analysis, DNA Atlantic Ocean DNA, Ribosomal Mediterranean Sea France Species Specificity Japan Molecular Sequence Data |
| url | https://pubmed.ncbi.nlm.nih.gov/41347297/ |