First record of Pentapharsodinium (Peridiniales, Dinophyceae) in the China Sea, with description of Pentapharsodinium dalei var. aciculiferum. Issue 4 (30th June 2013)

• Record Type: Journal Article
• Authors: Gu, Haifeng; Luo, Zhaohe; Zeng, Ni; Lan, Binbin; Lan, Dongzhao
• Is Part Of: Phycological research. Volume 61:Issue 4(2013:Oct.)
• Page Start: 256
• Page End: 267
• Publication Date: 2013-06-30
• Subjects: Algae -- Japan -- Periodicals; Algae -- Periodicals; 579.8
• DOI: 10.1111/pre.12024
• Languages: English
• ISSNs: 1322-0829

Abstract

<abstract abstract-type="main"> <title>Summary</title> <p>The dinophyte genus <italic>Pentapharsodinium</italic> shares an identical plate formula with that of <italic>Ensiculifera</italic>, but lacks a spine on the first cingulum plate and a median sulcal plate (Sm). Herein we established eight strains by incubating single cysts of <italic>Pentapharsodinium dalei</italic> from the Chukchi Sea, Yellow Sea, and South China Sea. The six strains from the Chukchi Sea and Yellow Sea fit the description of <italic>P. dalei</italic>, and they share identical internal transcribed spacer region (ITS1, ITS2 and 5.8S rDNA) sequences. The two other strains (G96 and PDFC01) from the South China Sea are morphologically similar to <italic>P. dalei</italic>, but they possess a spine on the anterior sulcal plate and an additional Sm plate. These two strains were described as <italic>P. dalei</italic> var. <italic>aciculiferum</italic>. They share identical ITS sequences and differ from <italic>P. dalei</italic> strains PDCH01 (Yellow Sea) and SZN19 (Norway origin) at 20 and 26 positions (96.40% and 95.32% similarity) respectively. Maximum‐likelihood and Bayesian inference resolved a well supported clade consisting of <italic>P. dalei</italic> and <italic>P. dalei</italic> var. <italic>aciculiferum</italic>. Our results reveal that cysts of <italic>P. dalei</italic> might comprise several morphologically, genetically, and ecologically different varieties.</p> </abstract>