Azadinium fusiforme, a new species of Amphidomataceae from Korean and Japanese coastal waters that lacks azaspiracid production.
Fuente:
PubMed
Enregistré dans:
| Auteurs principaux: | , , , , , , , |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
European journal of protistology
2026
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1868266087562346497 |
|---|---|
| author | Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju |
| author_facet | Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju |
| collection | PubMed - marine biology |
| contents | Azadinium fusiforme, a new species of Amphidomataceae from Korean and Japanese coastal waters that lacks azaspiracid production. Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju Japan Phylogeny Species Specificity Republic of Korea Spiro Compounds Marine Toxins Dinoflagellida Polyether Toxins Seawater Microscopy, Electron, Scanning The dinophyte family Amphidomataceae, comprising the genera Azadinium and Amphidoma, includes several species known to produce azaspiracids (AZAs), a group of lipophilic marine biotoxins associated with shellfish poisoning. Despite their ecological relevance and the increasing number of newly described species in recent years, their diversity is likely still underestimated, and knowledge of their global distribution and biogeography remains limited. Based on detailed morphological and phylogenetic analyses of strains from Korea and Japan, we describe Azadinium fusiforme sp. nov., a taxon that corresponds to the phylogenetic position of a strain previously reported from Japan. Light and scanning electron microscopy revealed that Az. fusiforme possesses a unique combination of morphological traits that distinguish it from its congeners. Notably, the ventral pore is located on the left side of the first apical plate, the pyrenoid is consistently positioned in the posteriormost part of the cell, the nucleus is elongated and centrally located, and pronounced thickenings occur along the sutures between the lateral and dorsal apical plates. Molecular data place Az. fusiforme in a well-supported, distinct clade within Azadinium, clearly supporting its designation as a new species. Mass spectrometric analyses showed no evidence of AZA production in any of the Az. fusiforme strains. This study contributes to a more fundamental understanding of the species diversity, distribution, and potential toxicity of Amphidomataceae in the Asia-Pacific region. |
| format | Artículo científico |
| id | pubmed_41671851 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | European journal of protistology |
| record_format | pubmed |
| spellingShingle | Azadinium fusiforme, a new species of Amphidomataceae from Korean and Japanese coastal waters that lacks azaspiracid production. Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju Japan Phylogeny Species Specificity Republic of Korea Spiro Compounds Marine Toxins Dinoflagellida Polyether Toxins Seawater Microscopy, Electron, Scanning Azadinium fusiforme, a new species of Amphidomataceae from Korean and Japanese coastal waters that lacks azaspiracid production. Tillmann, Urban Kuwata, Koyo Cho, Kyoungwon Takahashi, Kazuya Tebben, Jan Krock, Bernd Iwataki, Mitsunori Kim, Sunju Japan Phylogeny Species Specificity Republic of Korea Spiro Compounds Marine Toxins Dinoflagellida Polyether Toxins Seawater Microscopy, Electron, Scanning The dinophyte family Amphidomataceae, comprising the genera Azadinium and Amphidoma, includes several species known to produce azaspiracids (AZAs), a group of lipophilic marine biotoxins associated with shellfish poisoning. Despite their ecological relevance and the increasing number of newly described species in recent years, their diversity is likely still underestimated, and knowledge of their global distribution and biogeography remains limited. Based on detailed morphological and phylogenetic analyses of strains from Korea and Japan, we describe Azadinium fusiforme sp. nov., a taxon that corresponds to the phylogenetic position of a strain previously reported from Japan. Light and scanning electron microscopy revealed that Az. fusiforme possesses a unique combination of morphological traits that distinguish it from its congeners. Notably, the ventral pore is located on the left side of the first apical plate, the pyrenoid is consistently positioned in the posteriormost part of the cell, the nucleus is elongated and centrally located, and pronounced thickenings occur along the sutures between the lateral and dorsal apical plates. Molecular data place Az. fusiforme in a well-supported, distinct clade within Azadinium, clearly supporting its designation as a new species. Mass spectrometric analyses showed no evidence of AZA production in any of the Az. fusiforme strains. This study contributes to a more fundamental understanding of the species diversity, distribution, and potential toxicity of Amphidomataceae in the Asia-Pacific region. |
| title | Azadinium fusiforme, a new species of Amphidomataceae from Korean and Japanese coastal waters that lacks azaspiracid production. |
| topic | Japan Phylogeny Species Specificity Republic of Korea Spiro Compounds Marine Toxins Dinoflagellida Polyether Toxins Seawater Microscopy, Electron, Scanning |
| url | https://pubmed.ncbi.nlm.nih.gov/41671851/ |