RRC ID 37129
著者 Takahashi K, Moestrup Ø, Jordan RW, Iwataki M.
タイトル Two New Freshwater Woloszynskioids Asulcocephalium miricentonis gen. et sp. nov. and Leiocephalium pseudosanguineum gen. et sp. nov. (Suessiaceae, Dinophyceae) Lacking an Apical Furrow Apparatus.
ジャーナル Protist
Abstract Two new woloszynskioid dinoflagellates, Asulcocephalium miricentonis gen. et sp. nov. and Leiocephalium pseudosanguineum gen. et sp. nov., are described from Japanese freshwater ponds on the basis of bright field and fluorescence light microscopy, scanning and transmission electron microscopy, and molecular phylogeny inferred from rDNA sequences. Asulcocephalium miricentonis has a spherical anterior nucleus and chloroplast with a pyrenoid penetrated by the cytoplasm. This species has 9-12 latitudinal series of amphiesmal vesicles (AVs), including an apparently large AV on the right ventral side of the epicone. Leiocephalium pseudosanguineum has a U-shaped nucleus in the epicone and chloroplasts without a pyrenoid. This species has at least 24 latitudinal series of AVs. The characteristic features of both species were brick-like material (type E) in the eyespot and the lack of an apical furrow. These features coincide with those of Polarella glacialis, but the two species differ in cell shape, number and arrangement of AVs, shape of resting cysts, and habitats; i.e., P. glacialis has been reported only from marine cold waters. Molecular phylogeny revealed that A. miricentonis and L. pseudosanguineum were positioned in the Suessiaceae and closely related to Piscinoodinium sp., but their relationship to Polarella and other reported taxa was not supported.
巻・号 166(6)
ページ 638-58
公開日 2015-12-1
DOI 10.1016/j.protis.2015.10.003
PII S1434-4610(15)00066-8
PMID 26599726
MeSH DNA, Algal / genetics DNA, Ribosomal / genetics Dinoflagellida / classification* Dinoflagellida / cytology Dinoflagellida / genetics Dinoflagellida / ultrastructure* Japan Microscopy, Electron, Transmission Molecular Sequence Data Phylogeny Sequence Analysis, DNA Species Specificity
IF 1.989
引用数 13
WOS 分野 MICROBIOLOGY
リソース情報
藻類 NIES-3775 NIES-3776 NIES-3777