Molecular characterization and morphology of the photosynthetic dinoflagellate Bysmatrum caponii from two solar saltons in western Korea

Jeong, Hoon Eui; Jang, Se Hyeon; Kang, Nam Seon; Yoo, Yeong Du; Kim, Min Jeong; Lee, Kyung Ha; Yoon, Eun Young; Potvin, Éric; Hwang, Yeong Jong; Kim, Jong Im; Seong, Kyeong Ah

doi:10.1007/s12601-012-0001-y

Cited by 14 publications

(15 citation statements)

References 49 publications

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“…Although originally classified as Scrippsiella (Faust 1996, Steidinger andTangen 1996), the species were subsequently transferred to the genus Bysmatrum on the basis of their reticulated thecal surface and plate configuration: the intercalary plates 2a and 3a are separated from each other by the apical plate 3 0 , a morphological feature that is not present in Scrippsiella Steidinger 1998, Murray et al 2006). In addition to these morphological differences, molecular sequencing analyses recently confirmed that Bysmatrum is genetically different from Scrippsiella, and forms an isolated and uncertain position outside the Thoracosphaeraceae (Gottschling et al 2012, Jeong et al 2012.…”

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confidence: 98%

First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico

Limoges

Mertens

Ruíz-Fernández

et al. 2014

Journal of Phycology

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Cysts belonging to the benthic dinoflagellate Bysmatrum subsalsum were recovered from palynologically treated sediments collected in the Alvarado Lagoon (southwestern Gulf of Mexico). The cysts are proximate, reflecting the features of the parent thecal stage, and their autofluorescence implies a dinosporin composition similar to the cyst walls of phototrophic species. This finding is important for our understanding of B. subsalsum life cycle transitions and ecology. Encystment may play an important role in the bloom dynamics of this species as it can enable the formation of a sediment cyst bank that allows reinoculation of the water column when conditions become favorable. This is the first report of a fossilized cyst produced by a benthic dinoflagellate recovered from sub-recent sediments.

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confidence: 98%

First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico

Limoges

Mertens

Ruíz-Fernández

et al. 2014

Journal of Phycology

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“…They are able to live in diverse environments (Faust ; Jeong et al. ; Lan et al. ; Richlen and Lobel ) and play a variety of roles in marine food webs (reviewed by Jeong et al.…”

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confidence: 99%

“…D INOFLAGELLATES are among the major components of marine ecosystems (Jeong 1999;Lessard 1991;Sherr and Sherr 2007;Terrado et al 2009). They are able to live in diverse environments (Faust 1995;Jeong et al 2012;Lan et al 2009;Richlen and Lobel 2011) and play a variety of roles in marine food webs (reviewed by Jeong et al 2010). Some genera and species are cosmopolitan, while others are present in particular zones (Taylor 1987).…”

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confidence: 99%

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First Report of the Epiphytic Dinoflagellate Gambierdiscus caribaeus in the Temperate Waters off Jeju Island, Korea: Morphology and Molecular Characterization

Jeong

Lim

Jang

et al. 2012

J Eukaryotic Microbiology

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Gambierdiscus spp. are epiphytic, benthic dinoflagellates. Some species have been shown to be toxic and cause ciguatera fish poisoning. We report, for the first time, the occurrence of Gambierdiscus caribaeus isolated from the waters off Jeju Island in Korea. Its morphology was similar to that of the original Belize strains of G. caribaeus. Gambierdiscus caribaeus has been reported in the tropical and subtropical waters of the Pacific, Gulf of Mexico, Caribbean Sea, and Floridian coast. Our report extends its range to the North Pacific Ocean. The plates of the Korean strain were arranged in a Kofoidian series of Po, 3', 7'', 6c, 6s, 5''', 1p, and 2'''', morphologically closer to other strains of G. caribaeus than to G. carpenteri. When properly aligned, its small subunit (SSU) rDNA was 0.5% different from those of Gambierdiscus sp. C-1, a strain that was isolated from the waters off eastern Japan, but was 2.4-4.0% different from those of the NOAA strains of G. caribaeus and 3.1-3.4% different from those of the NOAA strains of G. carpenteri. Additionally, the D1-D3 large subunit (LSU) rDNA sequence of the Korean strain of G. caribaeus was 4.7-5.3% different from those of the NOAA strains of G. caribaeus and 7.1-7.5% different from those of all reported G. carpenteri strains, including the NOAA strains. In phylogenetic trees based on SSU and LSU rDNA sequences, our Korean strain was basal to the clade consisting of the NOAA strains of G. caribaeus, which in turn was sister clade to all reported G. carpenteri strains.

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“…This study defined the genus Margalefidinium for photosynthetic cells with an eyespot and an anterior spherical nucleus. The position of the nucleus is not always a stable diagnostic character, as it can vary even within the same strain of a dinoflagellate (Jeong et al, 2012). The presence and type of eyespot are more stable diagnostic characters.…”

Section: Discussionmentioning

confidence: 99%

Molecular characterization and morphology of Cochlodinium strangulatum , the type species of Cochlodinium , and Margalefidinium gen. nov. for C. polykrikoides and allied species (Gymnodiniales, Dinophyceae)

Gómez¹,

Richlen

Anderson

2017

Harmful Algae

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Photosynthetic species of the dinoflagellate genus Cochlodinium such as C. polykrikoides, one of the most harmful bloom-forming dinoflagellates, have been extensively investigated. Little is known about the heterotrophic forms of Cochlodinium, such as its type species, Cochlodinium strangulatum. This is an uncommon, large (~200 μm long), solitary, and phagotrophic species, with numerous refractile bodies, a central nucleus enclosed in a distinct perinuclear capsule, and a cell surface with fine longitudinal striae and a circular apical groove. The morphology of C. polykrikoides and allied species is different from the generic type. It is a bloom-forming species with single, two or four-celled chains, small cell size (25–40 μm long) with elongated chloroplasts arranged longitudinally and in parallel, anterior nucleus, eye-spot in the anterior dorsal side, and a cell surface smooth with U-shaped apical groove. Phylogenetic analysis based on LSU rDNA sequences revealed that C. strangulatum and C. polykrikoides/C. fulvescens formed two distally related, independent lineages. Based on morphological and phylogenetic analyses, the diagnosis of Cochlodinium is emended and C. miniatum is proposed as synonym of C. strangulatum. The new genus Margalefidinium gen. nov., and new combinations for C. catenatum, C. citron, C. flavum, C. fulvescens and C. polykrikoides are proposed.

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Molecular characterization and morphology of the photosynthetic dinoflagellate Bysmatrum caponii from two solar saltons in western Korea

Cited by 14 publications

References 49 publications

First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico

First report of fossilized cysts produced by the benthic Bysmatrum subsalsum (Dinophyceae) from a shallow Mexican lagoon in the Gulf of Mexico

First Report of the Epiphytic Dinoflagellate Gambierdiscus caribaeus in the Temperate Waters off Jeju Island, Korea: Morphology and Molecular Characterization

Molecular characterization and morphology of Cochlodinium strangulatum , the type species of Cochlodinium , and Margalefidinium gen. nov. for C. polykrikoides and allied species (Gymnodiniales, Dinophyceae)

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