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The cyst-theca relationship of the dinoflagellate cyst Trinovantedinium pallidifulvum, with erection of Protoperidinium lousianensis sp. nov. and their phylogenetic position within the Conica group

Kenneth Neil Mertens, Gu Haifeng, Yoshihito Takano, Andrea M. Price, Vera Pospelova, Kara Bogus, Gerard J. M. Versteegh, Fabienne Marret, R. Eugene Turner, Nancy N. Rabalais and Kazumi Matsuoka
The cyst-theca relationship of the dinoflagellate cyst Trinovantedinium pallidifulvum, with erection of Protoperidinium lousianensis sp. nov. and their phylogenetic position within the Conica group
Palynology (February 2017) 41 (2): 183-202

Abstract

We establish the cyst-theca relationship of the dinoflagellate cyst species Trinovantedinium pallidifulvum Matsuoka 1987 based on germination experiments of specimens isolated from the Gulf of Mexico. We show that the motile stage is a new species, designated as Protoperidinium louisianensis. We also determine its phylogenetic position based on single-cell polymerase chain reaction (PCR) of a single cell germinated from the Gulf of Mexico cysts. To further refine the phylogeny, we determined the large subunit (LSU) sequence through single-cell PCR of the cyst Selenopemphix undulata isolated from Brentwood Bay (Saanich Inlet, BC, Canada). The phylogeny shows that P. louisianensis is closest to P. shanghaiense, the motile stage of T. applanatum, and is consistent with the monophyly of the genus Trinovantedinium. Selenopemphix undulata belongs to a different clade than Selenopemphix quanta (alleged cyst of P. conicum), suggesting that the genus Selenopemphix is polyphyletic. Trinovantedinium pallidifulvum is widely distributed with occurrences in the Gulf of Mexico, the North Atlantic, the northeast Pacific and southeast Asia. In addition, we illustrate the two other extant species, Trinovantedinium applanatum and Trinovantedinium variable, and two morphotypes of Trinovantedinium. Geochemical analyses of the cyst wall of T. pallidifulvum indicate the presence of amide groups in agreement with other heterotrophic dinoflagellate species, although the cyst wall of T. pallidifulvum also includes some unique features.


ISSN: 0191-6122
EISSN: 1558-9188
Serial Title: Palynology
Serial Volume: 41
Serial Issue: 2
Title: The cyst-theca relationship of the dinoflagellate cyst Trinovantedinium pallidifulvum, with erection of Protoperidinium lousianensis sp. nov. and their phylogenetic position within the Conica group
Affiliation: Ghent University, Research Unit for Palaeontology, Ghent, United States
Pages: 183-202
Published: 201702
Text Language: English
Publisher: American Association of Stratigraphic Palynologists, Dallas, TX, United States
References: 95
Accession Number: 2017-054058
Categories: Paleobotany
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, 6 plates
N48°34'60" - N48°34'60", E123°28'00" - E123°28'00"
N53°19'00" - N53°19'00", W03°08'60" - W03°08'60"
Secondary Affiliation: State Oceanic Administration, CHN, ChinaInstitute for East China Sea Research, JPN, JapanMcGill University, CAN, CanadaUniversity of Victoria, CAN, CanadaTexas A&M University, USA, United StatesCenter for Marine Environmental Sciences, DEU, GermanyUniversity of Liverpool, GBR, United KingdomLouisiana State University, USA, United StatesLouisiana Universities Marine Consortium, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, American Association of Stratigraphic Palynologists. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201729
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