Phylogeny and Morphology of New Diplonemids from Japan

被引：37

作者：

Tashyreva, Daria ^{[1
]}

Prokopchuk, Galina ^{[1
]}

Yabuki, Akinori ^{[2
]}

Kaur, Binnypreet ^{[1
,3
]}

Faktorova, Drahomira ^{[1
,3
]}

Votypka, Jan ^{[1
,4
]}

Kusaka, Chiho ^{[2
]}

Fujikura, Katsunori ^{[2
]}

Shiratori, Takashi ^{[5
]}

Ishida, Ken-Ichiro ^{[6
]}

Horak, Ales ^{[1
,3
]}

Lukes, Julius ^{[1
,3
]}

机构：

[1] Czech Acad Sci, Ctr Biol, Inst Parasitol, Ceske Budejovice, Budweis, Czech Republic

[2] Japan Agcy Marine Earth Sci & Technol, Dept Marine Divers, Yokosuka, Kanagawa, Japan

[3] Univ South Bohemia, Fac Sci, Ceske Budejovice, Budweis, Czech Republic

[4] Charles Univ Prague, Fac Sci, Prague, Czech Republic

[5] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan

[6] Univ Tsukuba, Fac Life & Environm Sci, Tsukuba, Ibaraki, Japan

来源：

PROTIST | 2018年 / 169卷 / 02期

基金：

欧洲研究理事会;

关键词：

Diplonema; ultrastructure; phylogeny; Euglenozoa; description; flagellates; AMBULATOR LARSEN; SEQUENCE ALIGNMENT; ULTRASTRUCTURE; MARINE; PATTERSON; EVOLUTION; LIGHT; FLAGELLATE; DIVERSITY; COLORLESS;

D O I：

10.1016/j.protis.2018.02.001

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Diplonemids were recently found to be the most species-rich group of marine planktonic protists. Based on phylogenetic analysis of 18S rRNA gene sequences and morphological observations, we report the description of new members of the genus Rhynchopus - R. humris sp. n. and R. serpens sp. n., and the establishment of two new genera - Lacrimia gen. n. and Sulcionema gen. n., represented by L. lanifica sp. n. and S. specki sp. n., respectively. In addition, we describe the organism formerly designated as Diplonema sp. 2 (ATCC 50224) as Flectonema neradi gen. n., sp. n. The newly described diplonemids share a common set of traits. Cells are sac-like but variable in shape and size, highly metabolic, and surrounded by a naked cell membrane, which is supported by a tightly packed corset of microtubules. They carry a single highly reticulated peripheral mitochondrion containing a large amount of mitochondria! DNA, with lamellar cristae. The cytopharyngeal complex and flagellar pocket are contiguous and have separate openings. Two parallel flagella are inserted sub-apically into a pronounced flagellar pocket. Rhynchopus species have their flagella concealed in trophic stages and fully developed in swimming stages, while they permanently protrude in all other known diplonemid species. (C) 2018 Elsevier GmbH. All rights reserved.

引用

页码：158 / 179

页数：22

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