Dactylodinium pterobelotum gen. et sp. nov., a new marine woloszynskioid dinoflagellate positioned between the two families Borghiellaceae and Suessiaceae
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Dactylodinium pterobelotum gen. et sp. nov., a new marine woloszynskioid dinoflagellate positioned between the two families Borghiellaceae and Suessiaceae. / Takahashi, Kazuya; Moestrup, Øjvind; Wada, Minoru; Ishimatsu, Atsushi; Nguyen, Van Nguyen; Fukuyo, Yasuwo; Iwataki, Mitsunori.
In: Journal of Phycology, Vol. 53, No. 6, 12.2017, p. 1223-1240.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Dactylodinium pterobelotum gen. et sp. nov., a new marine woloszynskioid dinoflagellate positioned between the two families Borghiellaceae and Suessiaceae
AU - Takahashi, Kazuya
AU - Moestrup, Øjvind
AU - Wada, Minoru
AU - Ishimatsu, Atsushi
AU - Nguyen, Van Nguyen
AU - Fukuyo, Yasuwo
AU - Iwataki, Mitsunori
PY - 2017/12
Y1 - 2017/12
N2 - A new marine woloszynskioid dinoflagellate Dactylodinium pterobelotum gen. et sp. nov., collected from a southern Vietnamese estuary, was described on the basis of LM, SEM, and TEM, and molecular phylogeny inferred from rDNA sequences. This species had the smallest number of amphiesmal vesicles (5 latitudinal series) in woloszynskioid dinoflagellates assigned to the Suessiaceae and Borghiellaceae. The eyespot was of type B, composed of osmiophilic globules and brick-like material, located in- and outside of the chloroplast respectively. An apical structure comprised a pair of elongate anterior vesicles (PEV). A large peduncle was conspicuous, located in the sulcal extension in the epicone, and supported by a microtubular strand of ~140 microtubules. Ultrastructural features of trichocysts represent a novel type in the Dinophyceae, bearing lateral hairs besides anterior fibers. The molecular phylogeny based on partial LSU rDNA showed the species in a basal position in the family Suessiaceae; this indicates the eyespot type B and PEV of the Borghiellaceae are ancestral states of the eyespot comprising brick-like material (type E) and an elongate apical vesicle of the Suessiaceae.
AB - A new marine woloszynskioid dinoflagellate Dactylodinium pterobelotum gen. et sp. nov., collected from a southern Vietnamese estuary, was described on the basis of LM, SEM, and TEM, and molecular phylogeny inferred from rDNA sequences. This species had the smallest number of amphiesmal vesicles (5 latitudinal series) in woloszynskioid dinoflagellates assigned to the Suessiaceae and Borghiellaceae. The eyespot was of type B, composed of osmiophilic globules and brick-like material, located in- and outside of the chloroplast respectively. An apical structure comprised a pair of elongate anterior vesicles (PEV). A large peduncle was conspicuous, located in the sulcal extension in the epicone, and supported by a microtubular strand of ~140 microtubules. Ultrastructural features of trichocysts represent a novel type in the Dinophyceae, bearing lateral hairs besides anterior fibers. The molecular phylogeny based on partial LSU rDNA showed the species in a basal position in the family Suessiaceae; this indicates the eyespot type B and PEV of the Borghiellaceae are ancestral states of the eyespot comprising brick-like material (type E) and an elongate apical vesicle of the Suessiaceae.
KW - apical structure complex
KW - Borghiellaceae
KW - Dactylodinium pterobelotum
KW - ecophysiology
KW - eyespot
KW - phylogeny
KW - Suessiaceae
KW - ultrastructure
KW - woloszynskioid
UR - http://www.scopus.com/inward/record.url?scp=85029418054&partnerID=8YFLogxK
U2 - 10.1111/jpy.12575
DO - 10.1111/jpy.12575
M3 - Journal article
C2 - 28796896
AN - SCOPUS:85029418054
VL - 53
SP - 1223
EP - 1240
JO - Journal of Phycology
JF - Journal of Phycology
SN - 0022-3646
IS - 6
ER -
ID: 188361782