Luo, Zhaohe and Lim, Zhen Fei and Mertens, Kenneth Neil and Krock, Bernd and Teng, Sing Tung and Tan, Toh Hii and Leaw, Chui Pin and Lim, Po Teen and Gu, Haifeng (2020) Attributing Ceratocorys, Pentaplacodinium and Protoceratium to Protoceratiaceae (Dinophyceae), with descriptions of Ceratocorys malayensis sp. nov. and Pentaplacodinium usupianum sp. nov. Phycologia, 59 (1). pp. 6-23. ISSN 0031-8884, DOI https://doi.org/10.1080/00318884.2019.1663693.
Full text not available from this repository.Abstract
The gonyaulacean family Protoceratiaceae is characterised by five precingular plates. It currently encompasses the type genus Ceratocorys and the fossil genus Atopodinium. Fourteen strains of Ceratocorys, Pentaplacodinium, and Protoceratium were established from Malaysian and Hawaiian waters, and their morphologies were examined using light and scanning electron microscopy. Two new species, Ceratocorys malayensis sp. nov. and Pentaplacodinium usupianum sp. nov., were described from Malaysian waters. They share a Kofoidean plate formula of Po, Pt, 3?, 1a, 6??, 6C, 6S, 5???, 1p, 1????. Ceratocorys malayensis has a short first apical plate (1?) with no direct contact with the anterior sulcal plate (Sa) whereas Pentaplacodinium usupianum had a parallelogram-shaped 1? plate which often contacted the Sa plate. The genera Ceratocorys and Pentaplacodinium were emended accordingly to incorporate species bearing five or six precingular plates. The Protoceratium strain from Hawaii was morphologically similar to P. reticulatum, but differed in the lack of a ventral pore in plate 1? and slight or lack of contact between plates 1? and Sa, and is here designated as P. cf. reticulatum. The maximum-likelihood and Bayesian inference analyses based on SSU, LSU and ITS ribosomal DNA sequences revealed that these three genera are monophyletic and form a well-resolved group. Our results support Protoceratium and Pentaplacodinium as members of the family Protoceratiaceae, characterised by the presence of one anterior intercalary plate. Seven strains of Protoceratium cf. reticulatum, Ceratocorys malayensis and Pentaplacodinium usupianum were examined for yessotoxin production by LC-MS/MS but none produced a detectable amount of toxin.
| Item Type: | Article |
|---|---|
| Funders: | National Key Research and Development Program of China (2016YFE0202100), National Natural Science Foundation of China (NSFC) (41676117), China-ASEAN Maritime Cooperation Fund, Malaysia Ministry of Energy, Science, Technology, Environment and Climate Change (MESTECC) (CF001-2018), Ministry of Education HICoE and RU fund (IOES-2014C), Ministry of Education HICoE and RU fund (TU001A-2018), Helmholtz-Gemeinschaft Deutscher Forschungszentren through the research program "Polar regions And Coasts in the changing Earth System" (PACES) of the Alfred Wegener Institut-Helmholtz Zentrum fur Polar- und Meeresforschung |
| Uncontrolled Keywords: | Ceratocoryaceae; Gonyaulacaceae; Molecular phylogeny; Protoceratium reticulatum; Yessotoxin |
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 06 Mar 2023 07:49 |
| Last Modified: | 06 Mar 2023 07:49 |
| URI: | http://eprints.um.edu.my/id/eprint/37265 |
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