Yogsothoth knorrus gen. n., sp. n. and Y. carteri sp. n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

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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.

Язык оригиналаанглийский
Страницы (с-по)682-696
Число страниц15
ЖурналProtist
Том169
Номер выпуска5
DOI
СостояниеОпубликовано - 1 ноя 2018

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    Предметные области Scopus

    • Микробиология

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    title = "Yogsothoth knorrus gen. n., sp. n. and Y. carteri sp. n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids",
    abstract = "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.",
    keywords = "18S rRNA gene phylogeny, cell coverings, centrohelids, Heliozoa, novel lineages., secondary structure",
    author = "Шишкин, {Егор Андреевич} and Драчко, {Дарья Олеговна} and Климов, {Владимир Игоревич} and Zlatogursky, {Vasily V.}",
    year = "2018",
    month = "11",
    day = "1",
    doi = "10.1016/j.protis.2018.06.003",
    language = "English",
    volume = "169",
    pages = "682--696",
    journal = "Protist",
    issn = "1434-4610",
    publisher = "Elsevier",
    number = "5",

    }

    Yogsothoth knorrus gen. n., sp. n. and Y. carteri sp. n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids. / Шишкин, Егор Андреевич; Драчко, Дарья Олеговна; Климов, Владимир Игоревич; Zlatogursky, Vasily V.

    В: Protist, Том 169, № 5, 01.11.2018, стр. 682-696.

    Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

    TY - JOUR

    T1 - Yogsothoth knorrus gen. n., sp. n. and Y. carteri sp. n. (Yogsothothidae fam. n., Haptista, Centroplasthelida), with Notes on Evolution and Systematics of Centrohelids

    AU - Шишкин, Егор Андреевич

    AU - Драчко, Дарья Олеговна

    AU - Климов, Владимир Игоревич

    AU - Zlatogursky, Vasily V.

    PY - 2018/11/1

    Y1 - 2018/11/1

    N2 - 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.

    AB - 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.

    KW - 18S rRNA gene phylogeny

    KW - cell coverings

    KW - centrohelids

    KW - Heliozoa

    KW - novel lineages.

    KW - secondary structure

    UR - http://www.scopus.com/inward/record.url?scp=85051707321&partnerID=8YFLogxK

    U2 - 10.1016/j.protis.2018.06.003

    DO - 10.1016/j.protis.2018.06.003

    M3 - Article

    VL - 169

    SP - 682

    EP - 696

    JO - Protist

    JF - Protist

    SN - 1434-4610

    IS - 5

    ER -