Phylogeny and Morphology of New Diplonemids from Japan

0498832 - BC 2019 RIV DE eng J - Článek v odborném periodiku
Tashyreva, Daria - Prokopchuk, Galina - Yabuki, A. - Kaur, Binnypreet - Faktorová, Drahomíra - Votýpka, Jan - Kusaka, C. - Fujikura, K. - Shiratori, T. - Ishida, K. I. - Horák, Aleš - Lukeš, Julius
Phylogeny and Morphology of New Diplonemids from Japan.
Protist. Roč. 169, č. 2 (2018), s. 158-179. ISSN 1434-4610. E-ISSN 1618-0941
Grant CEP: GA MŠMT LL1601; GA ČR(CZ) GA14-23986S; GA MŠMT(CZ) LM2015062
Institucionální podpora: RVO:60077344
Klíčová slova: description * Diplonema * Euglenozoa * flagellates. * phylogeny * ultrastructure
Obor OECD: Genetics and heredity (medical genetics to be 3)
Impakt faktor: 3.000, rok: 2018

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 mitochondrial 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.
Trvalý link: http://hdl.handle.net/11104/0291105