FN Archimer Export Format
PT J
TI Cyst-motile stage relationship and molecular phylogeny of a new freshwater dinoflagellate Gymnodinium plasticum from Plastic Lake, Canada
BT 
AF WANG, Na
   LUO, Zhaohe
   MERTENS, Kenneth
   MCCARTHY, Francine M. G.
   GU, Li
   GU, Haifeng
AS 1:1;2:1;3:2;4:3;5:1;6:1;
FF 1:;2:;3:PDG-ODE-LITTORAL-LERBO;4:;5:;6:;
C1 State Ocean Adm, Inst Oceanog 3, Xiamen, Peoples R China.
   IFREMER, Stn Biol Marine, LER BO, Concarneau, France.
   Brock Univ, Earth Sci, St Catharines, ON, Canada.
C2 STATE OCEAN ADM, CHINA
   IFREMER, FRANCE
   UNIV BROCK, CANADA
SI CONCARNEAU
SE PDG-ODE-LITTORAL-LERBO
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
   copubli-sud
IF 1.275
TC 5
UR https://archimer.ifremer.fr/doc/00406/51731/53727.pdf
LA English
DT Article
DE ;apical structure complex;cyst;Gymnodiniales sensu stricto;Gymnodinium fuscum
AB The dinophyceaen genus Gymnodinium was established with the freshwater species G. fuscum as type. According to Thessen et al. (2012), there are 268 species, with the majority marine species. In recently published molecular phylogenies based on ribosomal DNA sequences, Gymnodinium is polyphyletic. Here, a new freshwater Gymnodinium species, G. plasticum, is described from Plastic Lake, Ontario, Canada. Two strains were established by incubating single cysts, and their morphology was examined with light microscopy and scanning electron microscopy. The cyst had a rounded epicyst and hypocyst with a wide cingulum and smooth surface. Vegetative cells were characterized by an elongated nucleus running vertically and a deep sulcal intrusion. The apical structure complex was horseshoe-shaped and consisted of two pronounced ridges with a deep internal groove, encircling 80% of the apex. Small subunit ribosomal DNA (SSU rDNA), large subunit ribosomal DNA (LSU rDNA) and internal transcribed spacer (ITS) sequences were obtained from cultured strains. Molecular phylogeny based on concatenated SSU, LSU and ITS sequences supports the monophyly of the Gymnodiniales sensu stricto clade but our results suggest that many Gymnodinium species might need reclassification. Gymnodinium plasticum is closest to Dissodinium pseudolunula in our phylogeny but distant from the type species G. fuscum, as are the other gymnodiniacean taxa. 
PY 2017
PD OCT
SO Phycological Research
SN 1322-0829
PU Wiley
VL 65
IS 4
UT 000412099200006
BP 312
EP 321
DI 10.1111/pre.12190
ID 51731
ER

EF