Morphological and molecular characterization of Ptychodiscus noctiluca revealed the polyphyletic nature of the order Ptychodiscales (Dinophyceae)
文献类型：期刊论文
| 作者 | Gomez, Fernando; Qiu, Dajun; Dodge, John D.; Lopes, Rubens M.; Lin, Senjie |
| 刊名 | JOURNAL OF PHYCOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 52期号:5页码:793-805 |
| 关键词 | alveolates amphiesma Atlantic Ocean Dinophyta Gymnodiniales Mediterranean Sea Peridiniales phytoplankton ptychodiscacean thick pellicle unarmored Dinoflagellata |
| 通讯作者 | Gomez, F (reprint author), Carmen Campos Panisse 3, E-11500 El Puerto De Santa Maria, Spain. |
| 英文摘要 | The planktonic dinoflagellate Ptychodiscus noctiluca combined distinctive morphological features such as a disk-shaped anteroposteriorly compressed cell body and an apical carina, together with a flexible and tough cell covering, suggesting intermediate characteristics between thecate and naked dinoflagellates. Ptychodiscusnoctiluca was examined by light, epifluorescence, and scanning electron microscopy from specimens collected in the Mediterranean Sea and the North and South Atlantic Ocean. Ptychodiscusnoctiluca showed a straight apical groove that bisected the carina, a cell covering with a polygonal surface reticulum, nucleus without capsule, sulcal intrusion in the episome, sulcal ventral flange, and yellowish-green chloroplasts that are shared characters with Brachidinium/Karenia. The cell division was the typical binary fission of gymnodinioid dinoflagellates, although exceptionally in an oblique transversal axis. We examined the intraspecific variability during incubation experiments. In the fattened cells, termed as Ptychodiscus carinatus, chloroplasts transformed into dark granules, and the cell acquired the swollen and smaller stage, termed as P.inflatus. Ptychodiscus carinatus, P.inflatus, and Diplocystis antarctica are synonyms of P.noctiluca. Molecular phylogeny based on the SSU rDNA sequence revealed that Ptychodiscus branched within the short-branching dinokaryotic dinoflagellates as an independent lineage with affinity to Brachidinium/Karenia and Karlodinium/Takayama in a generally poorly resolved clade. Our results indicated that the order Ptychodiscales, established for unarmored dinoflagellates with a strongly developed pellicle, has artificially grouped thecate dinoflagellates (Kolkwitziella, Herdmania), naked dinoflagellates with thick cell covering (Balechina, Cucumeridinium) andother insufficiently known unarmored generawith typical cell coverings (Brachidinium, Ceratoperidinium). |
| 学科主题 | Plant Sciences; Marine & Freshwater Biology |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/15280]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 推荐引用方式 GB/T 7714 | Gomez, Fernando,Qiu, Dajun,Dodge, John D.,et al. Morphological and molecular characterization of Ptychodiscus noctiluca revealed the polyphyletic nature of the order Ptychodiscales (Dinophyceae)[J]. JOURNAL OF PHYCOLOGY,2016,52(5):793-805. |
| APA | Gomez, Fernando,Qiu, Dajun,Dodge, John D.,Lopes, Rubens M.,&Lin, Senjie.(2016).Morphological and molecular characterization of Ptychodiscus noctiluca revealed the polyphyletic nature of the order Ptychodiscales (Dinophyceae).JOURNAL OF PHYCOLOGY,52(5),793-805. |
| MLA | Gomez, Fernando,et al."Morphological and molecular characterization of Ptychodiscus noctiluca revealed the polyphyletic nature of the order Ptychodiscales (Dinophyceae)".JOURNAL OF PHYCOLOGY 52.5(2016):793-805. |
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来源：南海海洋研究所
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