Centrohelid heliozoa (Chromista, Hacrobia) of Southern Cis-Ural region

Плотников, А. О.; Ермоленко, Е. А.

doi:10.1134/s1062359015080063

Cited by 12 publications

(13 citation statements)

References 13 publications

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“…The findings considerably similar to P. ruminata recently have been reported from the close location by Plotnikov and Ermolenko (2015), as well as mentioned by Ermolenko and Plotnikov (2013) and Gerasimova and Plotnikov (2015), as "Heteroraphidiophrys australis". These isolates are extremely similar to P. ruminata except for the size and proportions of the inner plate scales (2.1-2.8 9 0.9-1.2 lm compared to 3.2-4.9 9 1.5-2.6 lm).…”

Section: Potential Additional Findingssupporting

confidence: 91%

Pinjata ruminata gen. et sp. n.—A New Member of Centrohelid Family Yogsothothidae (Haptista: Centroplasthelida) from the Brackish River

Zlatogursky

Герасимова

Drachko

et al. 2019

J Eukaryotic Microbiology

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A new genus and species of centrohelid heliozoan Pinjata ruminata from the Tuzlukkol’ River (Orenburg Region of Russia) and Gorʼkoe Lake (Chelyabinsk Region of Russia) is studied with light‐ and electron microscopy. Pinjata ruminata has two types of plate scales, partially running up the sides of the axopodia. Inner plate scales (3.2–4.9 × 1.5–2.6 μm) are flat, ovate‐oblong and have a broad axial thickening and a thin electron‐dense border. Outer plate scales (4.2–6.7 × 1.5–3.0 μm) are concave, elongated, of irregular shape, often curved, and broadened towards one end. Roundish depressions are forming two rows on both sides of the narrow axial thickening. The cells are attached to the substratum. Molecular phylogenetic analysis based on the SSU rDNA robustly placed P. ruminata in the family Yogsothothidae. This position is confirmed with the presence of five panacanthocystid increase regions. The morphology of the new genus is in a good accordance with diagnosis of the family. The status of a genus “Heteroraphidiophrys” is discussed. Other potential findings of Pinjata from literature are analyzed. Pinjata represents the third lineage of centrohelids, characterized with the presence of only tangentially oriented plate scales. The halophilic nature of Yogsothothidae is suggested.

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Section: Potential Additional Findingssupporting

confidence: 91%

Pinjata ruminata gen. et sp. n.—A New Member of Centrohelid Family Yogsothothidae (Haptista: Centroplasthelida) from the Brackish River

Zlatogursky

Герасимова

Drachko

et al. 2019

J Eukaryotic Microbiology

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“…This species differs from A. polymorpha, A. siemensmae, A. valdiviense by the morphology of cup-shaped tips of short spine scales (Mikrjukov 2002). Morphology of observed scales corresponds to most known descriptions, except a different number of furcae in some papers: 2-3 in Siemensma and Roijackers (1988a), Leonov and Plotnikov (2009), Plotnikov and Ermolenko (2015), Prokina and Mylnikov (2019); 7-8 in Leonov (2010a), Prokina et al (2017c). Many authors noted a larger length of long spine scales -up to 15 µm (Leonov and Plotnikov 2009, Leonov 2010a, Mylnikov 2012, Plotnikov and.…”

Section: Acanthocystis Nichollsisupporting

confidence: 65%

“…ceylanica] Dürrschmidt 1987a). It was found in Russia in freshwaters of European part (Mikrjukov 1993a, Leonov and Plotnikov 2009, Leonov 2010a, Leonov and Mylnikov 2012, Plotnikov and Ermolenko 2015, Prokina et al 2017c, in saline inland waters of Orenburg Region Ermolenko 2015, Plotnikov and. Wailes, 1925[syn.…”

Section: Acanthocystis Nichollsimentioning

confidence: 99%

“…Distribution: Freshwaters of N. America (Nicholls 1983), S. America (Dürrschmidt 1985), Australia (Croome 1986), Crimean Peninsula (Mikrjukov 1999). It was found in Russia in freshwaters of European part (Leonov and Plotnikov 2009, Leonov 2010a, Plotnikov and Ermolenko 2015, Prokina et al 2017c, in saline inland waters of Orenburg Region (Plotnikov and Gerasimova 2017), in the Black Sea (Leonov 2010a). 4E-G) Description: Diameter of protoplast of living cell is 29 µm.…”

Section: Acanthocystis Trifurcamentioning

confidence: 99%

“…Remarks: Morphology of observed scales corresponds to previous descriptions. Some authors noted smaller spine scales of both type: length of shaft -1.8-11.5 µm, diameter of base -0.37-1.6 µm (Dürrschmidt 1985, Leonov and Plotnikov 2009, Plotnikov and Ermolenko 2015, as well as larger length of shaft -up to 65 µm, diameter of shaft -up to 0.7 µm (Nicholls 1983, Croome 1986, Prokina et al 2017c.…”

Section: Acanthocystis Turfacea Carter 1863 (Figs 1cmentioning

confidence: 99%

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Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Prokina

Zagumyonnyi

Tikhonenkov

2018

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Species diversity of centrohelid heliozoans in different types of freshwater bodies (forest lakes, floodplain lakes, sphagnum bogs, and river) in the Middle Russian forest-steppe was studied. The morphology of cell coverings (scales and spicules) were observed using scanning and transmission electron microscopy. A total of 20 species of centrohelid heliozoans from five families (Acanthocystidae, Pterocystidae, Raphidiophryidae, Raphidocystidae, and Choanocystidae) and six genera (Acanthocystis, Raineriophrys, Pterocystis, Raphidiophrys, Raphidocystis, and Choanocystis) as well as an unidentified Centrohelea species and a Heterophrys-like organism were found. Morphological descriptions and electron micrographs are provided. The most common species were Acanthocystis nichollsi, Raphidiophrys capitata, and a Heterophrys-like organism. The highest species diversity was observed in terrace forest lakes, whereas the lowest was seen in sphagnum bogs. Four species (Acanthocystis costata, A. elenazhivotovae, A. mikrjukovii, and A. spinosa) were found for the first time since their original description. Three species (Acanthocystis spinosa, Raphidiophrys capitata, and Pterocystis pulchra) are new records for Russia. The distribution of the observed morphospecies confirms the cosmopolitanism of many centrohelids and highlights the importance of the type of water body and microbiotope in forming the species composition. The obtained data on the morphology of studied scales supplements our knowledge of the intraspecific variability of centrohelid heliozoans.

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Centrohelid heliozoans of Ukraine with a description of a new genus and species (Haptista: Centroplasthelida)

Zagumyonnyi

Radaykina²,

Keeling³

et al. 2022

European Journal of Protistology

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Centrohelid heliozoa (Chromista, Hacrobia) of Southern Cis-Ural region

Cited by 12 publications

References 13 publications

Pinjata ruminata gen. et sp. n.—A New Member of Centrohelid Family Yogsothothidae (Haptista: Centroplasthelida) from the Brackish River

Pinjata ruminata gen. et sp. n.—A New Member of Centrohelid Family Yogsothothidae (Haptista: Centroplasthelida) from the Brackish River

Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe

Centrohelid heliozoans of Ukraine with a description of a new genus and species (Haptista: Centroplasthelida)

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