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Zlatogursky, Vasily V.
Publications (3 of 3) Show all publications
Adl, S. M., Bass, D., Lane, C. E., Lukes, J., Schoch, C. L., Smirnov, A., . . . Zhang, Q. (2019). Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes. Journal of Eukaryotic Microbiology, 66(1), 4-119
Open this publication in new window or tab >>Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes
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2019 (English)In: Journal of Eukaryotic Microbiology, ISSN 1066-5234, E-ISSN 1550-7408, Vol. 66, no 1, p. 4-119Article in journal (Refereed) Published
Abstract [en]

This revision of the classification of eukaryotes follows that of Adl et al., 2012 [J. Euk. Microbiol. 59(5)] and retains an emphasis on protists. Changes since have improved the resolution of many nodes in phylogenetic analyses. For some clades even families are being clearly resolved. As we had predicted, environmental sampling in the intervening years has massively increased the genetic information at hand. Consequently, we have discovered novel clades, exciting new genera and uncovered a massive species level diversity beyond the morphological species descriptions. Several clades known from environmental samples only have now found their home. Sampling soils, deeper marine waters and the deep sea will continue to fill us with surprises. The main changes in this revision are the confirmation that eukaryotes form at least two domains, the loss of monophyly in the Excavata, robust support for the Haptista and Cryptista. We provide suggested primer sets for DNA sequences from environmental samples that are effective for each clade. We have provided a guide to trophic functional guilds in an appendix, to facilitate the interpretation of environmental samples, and a standardized taxonomic guide for East Asian users.

Place, publisher, year, edition, pages
WILEY, 2019
Keywords
Algae, amoebae, biodiversity, ciliate, ecology, flagellate, fungus, microbiology, parasite, plankton, protozoa, systematics, taxonomy
National Category
Evolutionary Biology
Identifiers
urn:nbn:se:uu:diva-376894 (URN)10.1111/jeu.12691 (DOI)000456186200001 ()30257078 (PubMedID)
Funder
EU, Horizon 2020, 679849EU, European Research Council, 771592 CZ 1.05/1.1.00/02.0109 BIOCEVEU, European Research Council, CZ LL1601EU, European Research Council, OPVVV 16_019/0000759Swedish Research Council
Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-12Bibliographically approved
Zlatogursky, V. V., Drachko, D., Klimov, V. I. & Shishkin, Y. (2018). On the phylogenetic position of the genus Raphidocystis (Haptista: Centroplasthelida) with notes on the dimorphism in centrohelid life cycle. European Journal of Protistology, 64, 82-90
Open this publication in new window or tab >>On the phylogenetic position of the genus Raphidocystis (Haptista: Centroplasthelida) with notes on the dimorphism in centrohelid life cycle
2018 (English)In: European Journal of Protistology, ISSN 0932-4739, E-ISSN 1618-0429, Vol. 64, p. 82-90Article in journal (Refereed) Published
Abstract [en]

Centrohelid heliozoan Raphidocystis glabra was reisolated for the first time after initial description and put into a clonal culture. Its correct identification was confirmed by scanning and transmission electron microscopy of scales. The first light microscopy data from the living cells were obtained. Phylogenetic analysis of its position using 18S rDNA sequences was also performed. This species branches inside of the Polyplacocystis Glade, being closely related to the strain HLO4. The latter was isolated from the same sample with R. glabra and has spicules, not siliceous scales, unlike all the other members of this Glade. Using another strain isolated from this sample the co-specificity of HLO4 and R. glabra was demonstrated, and the presence of spicule-bearing stages in the life cycle of Raphidocystis was shown. Polyplacocystis revealed to be paraphyletic with Raphidocystis embedded in it. Moreover, representatives of both genera share the similar monolayered plate scales with hollow inflected margin. Thus, a family-level name Raphidocystidae for the whole Glade was proposed and all the Polyplacocystis species were transferred to Raphidocystis which name has a priority. The evolution of centrohelid coverings in the light of new findings was discussed, as well as the possible wide distribution of dimorphism in centrohelid life cycles. (C) 2018 Elsevier GmbH. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018
Keywords
Cell coverings, Centrohelids, Dimorphism, Life cycle, Ultrastructure, 18S rDNA phylogeny
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-361289 (URN)10.1016/j.ejop.2018.03.006 (DOI)000438557300007 ()29677685 (PubMedID)
Available from: 2018-09-26 Created: 2018-09-26 Last updated: 2018-09-26Bibliographically approved
Shishkin, Y., Drachko, D., Klimov, V. I. & Zlatogursky, V. V. (2018). Yogsothoth knorrus gen. n., sp n. and Y. carteri sp n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids. Protist, 169(5), 682-696
Open this publication in new window or tab >>Yogsothoth knorrus gen. n., sp n. and Y. carteri sp n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids
2018 (English)In: Protist, ISSN 1434-4610, E-ISSN 1618-0941, Vol. 169, no 5, p. 682-696Article in journal (Refereed) Published
Abstract [en]

Two closely related new species of centrohelid heliozoans with unusual morphology were studied with light and electron microscopy. Sequences of the 18S rRNA gene were also obtained and secondary structure of 18S rRNA molecule reconstructed. The cells, covered with inner siliceous plate scales formed colonies. The entire colony was surrounded with a thick layer of external scales. Inner scales were tabulate and had a patternless surface, except for the presence of an axial rib. Outer scales had a boat-like (Yogsothoth knorrus gen. nov., sp. nov.) or pot-like (Yogsothoth carteri sp. nov.) shape with an axial rib and numerous conical papillae on the scale surface. Analysis of 18S rRNA gene sequences robustly placed the new taxa within centrohelids, but not in any existing family. Scaled Yogsothoth represents a genetically divergent closest outgroup of Acanthocystida, branching after the supposedly primary non-scaled Marophrys, and together with acanthocystids, forming the novel taxon Panacanthocystida. Reconstruction of presumptive 18S rRNA secondary structure reveals interspecific differences in expansion segments 7 and 9 of Yogsothoth. Analysis of 18S rRNA secondary structure of other centrohelids allowed identification of length increases characteristic for Panacanthocystida location and reconstruction of 18S rRNA elongation in the course of the evolution of this group.

Place, publisher, year, edition, pages
ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018
Keywords
Heliozoa, centrohelids, cell coverings, 18S rRNA gene phylogeny, secondary structure, novel lineages
National Category
Biological Systematics
Identifiers
urn:nbn:se:uu:diva-365278 (URN)10.1016/j.protis.2018.06.003 (DOI)000444618900006 ()30125803 (PubMedID)
Available from: 2018-11-13 Created: 2018-11-13 Last updated: 2018-11-13Bibliographically approved
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