Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1391
1
1
gregorian
2012
4
1
11
2
online
1
fulltext
en
Morphology and Phylogeny of Scrippsiella trochoidea (Dinophyceae) a potentially harmful bloom forming species isolated from the sediments of Iran’s south coast
Ecology
Ecology
پژوهشي
Orginal research papers
<span style="line-height: 115% font-family: "Times New Roman","serif" font-size: 12pt mso-bidi-language: AR-SA mso-fareast-font-family: Calibri mso-ansi-language: EN-US mso-fareast-language: EN-US">Phytoplankton
cells and resting cysts of the species <i style="mso-bidi-font-style: normal">Scrippsiella</i>
<i>trochoidea</i> are regular and dominant components of the dinoflagellate flora
of coastal marine waters and sediments around the world. This species is a
common harmful bloom forming species in coastal waters. In this study, for the
first time cyst of S<i>. trochoidea</i> were<i> </i>isolated from the sediments
of southeast coast of<font size="3"><font face="Times New Roman"><span style="color: red"> </span>Iran. Five strains from
the germination of a single cyst belonged to<i> S. trochoidea</i>. In order to confirm
identification of the species an excystment and encystment experiment, cyst and
germinated cell morphology and plate pattern by light and electron microscopy (SEM)
have been described. The nucleotide sequences of two highly diverse regions,
the rDNA-ITS 1,2 and 5.8S-rDNA have been sequenced for all strains. Homologous
sequences from GenBank with five Iranian strains were compared to find their
phylogenetic relationship. Both NJ and MP phylogenetic and morphological
analysis showed five strains of <i>S. trochoidea</i> from Iran were clustered
with previously described <i>S. trochoidea</i> and <i>Calciodinellum levantinum</i>
species, and its closest relationship was with <i>Scrippsiella </i>sp. strain
with a 1.2-1.4% sequence divergence.<span style="mso-spacerun: yes"> </span>Results
indicate that molecular studies of rDNA if combined with morphological cyst and
vegetative cells could be a valuable approach to identification and taxonomy of
calciodinelloideae dinoflagellate.</font></font></span>
Cyst, Iran south coast, Molecular analysis, Morphology, Phylogeny, Scrippsiella trochoidea, Sediment, Vegetative cell
252
270
http://jifro.ir/browse.php?a_code=A-10-1-153&slc_lang=en&sid=1
G.
Attaran-Fariman
G.Attaran@cmu.ac.ir
10031947532846003182
10031947532846003182
Yes
C. J. S.
Bolch
10031947532846003183
10031947532846003183
No