論文 - 詳細
| RRC ID | 57633 |
|---|---|
| 著者 | Takahashi K, Benico G, Lum WM, Iwataki M. |
| タイトル | Gertia stigmatica gen. et sp. nov. (Kareniaceae, Dinophyceae), a New Marine Unarmored Dinoflagellate Possessing the Peridinin-type Chloroplast with an Eyespot. |
| ジャーナル | Protist |
| Abstract |
Marine unarmored dinoflagellates in the family Kareniaceae are known to possess chloroplasts of haptophyte origin, which contain fucoxanthin and its derivatives as major carotenoids, and lack peridinin. In the present study, the first species with the peridinin-type chloroplast in this family, Gertia stigmatica gen. et sp. nov., is described on the basis of ultrastructure, photosynthetic pigment composition, and molecular phylogeny inferred from nucleus- and chloroplast-encoded genes. Cells of G. stigmatica were small and harboring a chloroplast with an eyespot and two pyrenoids. The apical structure complex was straight, similar to Karenia and Karlodinium. Under transmission electron microscopy, the chloroplast was surrounded by two membranes, and the eyespot was composed of a single layer of osmiophilic globules (eyespot type A); this was never previously reported from the Kareniaceae. High performance liquid chromatography demonstrated the chloroplast contains peridinin, and neither fucoxanthin nor 19'-acyloxyfucoxanthins was identified. A phylogeny based on nucleus-encoded rDNAs suggested a position of G. stigmatica in the Kareniaceae, but not clustered within the previously described genera, i.e., Karenia, Karlodinium and Takayama. A phylogeny of chloroplast-encoded psbA, psbC and psbD indicated the chloroplast is of peridinin-type typical of dinoflagellates, but the most related species remains unclear. |
| 巻・号 | 170(5) |
| ページ | 125680 |
| 公開日 | 2019-11-1 |
| DOI | 10.1016/j.protis.2019.125680 |
| PII | S1434-4610(19)30031-8 |
| PMID | 31563792 |
| MeSH | Aquatic Organisms* / classification Aquatic Organisms* / cytology Aquatic Organisms* / metabolism Carotenoids* / metabolism Chloroplasts* / classification Chloroplasts* / metabolism Dinoflagellida / classification* Dinoflagellida / cytology Dinoflagellida / metabolism Species Specificity |
| IF | 1.989 |
| 引用数 | 1 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 10 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| 藻類 | NIES-4330 |