文章题目亚太地区新分离的小鞭毛藻Azadinium anteroporum sp. 11 .(两栖科,甲藻科)

IF 1.5 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Phycologia Pub Date : 2023-05-29 DOI:10.1080/00318884.2023.2204681
Koyo Kuwata, Wai Mun Lum, Kazuya Takahashi, Garry Benico, H. Uchida, M. Ozawa, Ryoji Matsushima, Ryuichi Watanabe, H. Oikawa, Toshiyuki Suzuki, M. Iwataki
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引用次数: 0

摘要

摘要:海洋鞘甲藻Azadinium包括已知能产生腹泻贝类毒素氮螺旋体(AZAs)的物种。本研究利用LM和SEM对从日本木须湾分离的一种鞘甲藻的形态进行了研究,并根据its和LSU rDNA序列推断了其系统发育位置。通过液相色谱-三重四极杆质谱仪(LC-MS/MS)检测AZAs的产生。细胞呈椭圆形,长15.9–22.4µm,宽11.1–17.1µm。叶绿体位于外周,扣带附近有一个蛋白核,细胞核位于下体中。尿道下裂比包皮小,2英寸板上有一根尖刺。该表格为Po、cp、X、4'、3a、6''、6C、5S、6''和2'''。根尖孔复合体由对称的根尖孔板(Po)、盖板(cp)和小管板(X)组成,并由根尖板形成的突出套环包围。腹侧孔位于板1’的中前缘,并与X板和/或板Po的左腹侧接触。板1’’与板1a接触。在培养物中未检测到AZA。分子系统发育研究表明,该物种与具有1’板左侧腹孔的阿扎迪尼属物种有亲缘关系,即楔形阿扎迪尼亚属、达连阿扎迪尼亚属、obesum阿扎迪尼雅属、poporum阿扎迪尼耶属、棘突阿扎迪尼耶属和trinitatum阿扎迪尼娅属,但不包括在这些物种中。新种Azadinium anteriporum sp.nov.在腹面孔位置(板1'的中前缘)上与这些相关物种(在板1'左侧有腹面孔)、A.polongum(在1'的左后侧有腹面孔)和所有其他Azadiniu物种(在1''的右侧有腹面孔径)不同。
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A new small thecate dinoflagellate Azadinium anteroporum sp. nov. (Amphidomataceae, Dinophyceae) isolated from the Asian Pacific
ABSTRACT The marine thecate dinoflagellate Azadinium includes species known to produce the diarrhetic shellfish toxins known as azaspiracids (AZAs). In this study, the morphology of a thecate dinoflagellate isolated from Mutsu Bay, Japan, was examined by LM and SEM, and its phylogenetic position was inferred from ITS and LSU rDNA sequences. The production of AZAs was examined by liquid chromatography-triple quadrupole mass spectrometer (LC-MS/MS). Cells were elliptical, 15.9–22.4 µm long and 11.1–17.1 µm wide. A chloroplast was positioned peripherally, with a pyrenoid near the cingulum, and the nucleus was placed in the hyposome. The hyposome was smaller than the episome, with an antapical spine on plate 2''''. Thecal tabulation was Po, cp, X, 4', 3a, 6'', 6C, 5S, 6''', 2''''. The apical pore complex consisted of a symmetrical apical pore plate (Po), a cover plate (cp) and a small canal plate (X), and was surrounded by a prominent collar formed by the apical plates. A ventral pore was located on the mid-anterior edge of plate 1' and contacted with the X-plate and/or the ventral left of plate Po. Plate 1'' was in contact with plate 1a. AZA was not detected in the cultures. Molecular phylogeny showed that the species was related to Azadinium species that possess the ventral pore on the left side of plate 1', i.e. A. cuneatum, A. dalianense, A. obesum, A. poporum, A. spinosum and A. trinitatum, but that it was not included in these species. The new species Azadinium anteroporum sp. nov. differs in the ventral pore position (mid-anterior edge of plate 1') from these related species (which have the ventral pore on the left side of plate 1'), and from A. polongum (with ventral pore on the posterior left side of 1') and all other Azadinium species (with ventral pore on the right side of 1').
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来源期刊
Phycologia
Phycologia 生物-海洋与淡水生物学
CiteScore
3.10
自引率
18.80%
发文量
54
审稿时长
3 months
期刊介绍: Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.
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