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PT J
TI Cyst-Theca Relationship and Phylogenetic Position of     Impagidinium caspienense     Incubated from Caspian Sea Surface Sediments: Relation to     Gonyaulax baltica     and Evidence for Heterospory within Gonyaulacoid Dinoflagellates
BT 
AF MERTENS, Kenneth
   TAKANO, Yoshihito
   GU, Haifeng
   BAGHERI, Siamak
   POSPELOVA, Vera
   PIENKOWSKI, Anna J.
   LEROY, Suzanne A. G.
   MATSUOKA, Kazumi
AS 1:1;2:2;3:3;4:4;5:5;6:6,7;7:8;8:2;
FF 1:PDG-ODE-LITTORAL-LERBO;2:;3:;4:;5:;6:;7:;8:;
C1 IFREMER, LER BO, Stn Biol Marine, Pl Croix,BP40537, F-29185 Concarneau, France.
   Inst East China Sea Res ECSER, 1-14 Bunkyo Machi, Nagasaki 8528521, Japan.
   SOA, Inst Oceanog 3, Xiamen 361005, Peoples R China.
   AREEO, Inland Waters Aquaculture Res Ctr, Iranian Fisheries Sci Inst, Anzali 66, Iran.
   Univ Victoria, Sch Earth & Ocean Sci, OEASB A405,POB 1700 STN CSC, Victoria, BC V8W 2Y2, Canada.
   MacEwan Univ, Dept Phys Sci, Edmonton, AB T5J 4S2, Canada.
   Bangor Univ, Sch Ocean Sci, Menai Bridge LL59 5AB, Anglesey, Wales.
   Brunel Univ London, Inst Environm, Uxbridge UB8 3PH, Middx, England.
C2 IFREMER, FRANCE
   ECSER, JAPAN
   SOA, CHINA
   AREEO, IRAN
   UNIV VICTORIA, CANADA
   UNIV MACEWAN, CANADA
   UNIV BANGOR, UK
   UNIV LONDON, UK
SI CONCARNEAU
SE PDG-ODE-LITTORAL-LERBO
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 2.537
TC 25
UR https://archimer.ifremer.fr/doc/00382/49326/49703.pdf
LA English
DT Article
DE ;Ataxiodinium choane;Baltic Sea;Impagidinium pallidum;Pyxidinopsis psilata;salinity;Spiniferites belerius;Spiniferites ramosus
AB We investigate the cyst-theca relationship of Impagidinium caspienense. Through an incubation experiment, we succeeded in examining the motile stage. Additional molecular analysis of single-cyst PCR (LSU and SSU rDNA) reveal that the cyst is related to the species Gonyaulax baltica Ellegaard et al. (2002). The ability of this species to belong to two types of cyst-based genera (spiniferate and impagidinioid) suggests that environmental (particularly salinity) and not genetic factors explain the formation of both morphotypes by Gonyaulax baltica, which provides evidence for heterospory in this species. The affiliation to Gonyaulax baltica demonstrates that Impagidinium caspienense is not endemic to the Caspian Sea. The phylogenetic position of several other gonyaulacoid species is also documented: Impagidinium pallidum, Ataxiodinium choane, Pyxidinopsis psilata, Spiniferites belerius, and Spiniferites ramosus. The LSU and SSU rDNA based phylogenies suggest that the genera Impagidinium and Spiniferites are not monophyletic, and that Pyxidinopsis psilata and Ataxiodinium choane are close to Gonyaulax verior and Gonyaulax polygramma, respectively. In addition, this study accentuates the importance of cyst morphology in the classification of the Gonyaulacales. 
PY 2017
PD NOV
SO Journal Of Eukaryotic Microbiology
SN 1066-5234
PU Wiley
VL 64
IS 6
UT 000415179600010
BP 829
EP 842
DI 10.1111/jeu.12417
ID 49326
ER

EF