Morphological and Phylogenetic Study of Protococcidians Sheds
Light on the Evolution of Epicellular Parasitism in Sporozoa
(Apicomplexa), with the Description of Eleutheroschizon
planoratum sp. nov

J 2023

Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov

PASKEROVA, Gita G., Tatiana S. MIROLIUBOVA, Andrea BARDŮNEK VALIGUROVÁ, Vladimir V. ALEOSHIN, Timur G. SIMDYANOV et. al.

Basic information

Original name

Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov

Authors

PASKEROVA, Gita G. (643 Russian Federation, guarantor), Tatiana S. MIROLIUBOVA (643 Russian Federation), Andrea BARDŮNEK VALIGUROVÁ (703 Slovakia, belonging to the institution), Vladimir V. ALEOSHIN (643 Russian Federation) and Timur G. SIMDYANOV (643 Russian Federation)

Edition

Diversity, MDPI, 2023, 1424-2818

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10613 Zoology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.400 in 2022

RIV identification code

RIV/00216224:14310/23:00131294

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.3390/d15070863

UT WoS

001038100700001

Keywords in English

marine apicomplexans; host–parasite interactions; Cryptosporidium; Eleutheroschizonidae; Protococcidiida; polychaetes; intestinal parasites; coccidians

Abstract

V originále

The order Protococcidiida is one of the most poorly studied basal groups of Sporozoa (Apicomplexa sensu stricto). To date, the phylogenetic unity of protococcidians and their relationship with other sporozoans are understudied. Only the protococcidian Eleutheroschizon duboscqi has molecular evidence of a sister position to “true” coccidians (Eimeria, Sarcocystis, Toxoplasma). E. duboscqi is characterized by epicellular development in the so-called parasitophorous sac of the host cell origin. The unusual localization of Eleutheroschizon is comparable to that of Cryptosporidium. We describe a new species of the genus, E. planoratum ex Naineris quadricuspida polychaete from the White Sea, using light and electron microscopy. The morphology of attachment apparatus, phylogenetic analyses of concatenated DNA sequences of the nuclear ribosomal operon (SSU rDNA, ITS1, 5.8S rDNA, ITS2, and LSU rDNA), and compensatory base changes in ITS2 secondary structures of both protococcidians confirm the new species. The resulting phylogenies also confirm that Eleutheroschizon is sister to eimeriid coccidians, while Cryptosporidium tends to be grouped with gregarines. We discuss a new type of endoparasitism among sporozoans—the closed epicellular parasitism that evolved convergently in Eleutheroschizon and Cryptosporidium. The diagnosis of the new species and the emended diagnoses of the species E. duboscqi and the genus Eleutheroschizon are presented.

Citovat

PASKEROVA, Gita G., Tatiana S. MIROLIUBOVA, Andrea BARDŮNEK VALIGUROVÁ, Vladimir V. ALEOSHIN and Timur G. SIMDYANOV. Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov. Diversity. MDPI, 2023, vol. 15, No 7, p. 1-19. ISSN 1424-2818. Available from: https://dx.doi.org/10.3390/d15070863.

@article{2298961,
   author = {Paskerova, Gita G. and Miroliubova, Tatiana S. and Bardůnek Valigurová, Andrea and Aleoshin, Vladimir V. and Simdyanov, Timur G.},
   article_number = {7},
   doi = {http://dx.doi.org/10.3390/d15070863},
   keywords = {marine apicomplexans; host–parasite interactions; Cryptosporidium; Eleutheroschizonidae; Protococcidiida; polychaetes; intestinal parasites; coccidians},
   language = {eng},
   issn = {1424-2818},
   journal = {Diversity},
   title = {Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov},
   url = {https://www.mdpi.com/1424-2818/15/7/863},
   volume = {15},
   year = {2023}
}

TY  - JOUR
ID  - 2298961
AU  - Paskerova, Gita G. - Miroliubova, Tatiana S. - Bardůnek Valigurová, Andrea - Aleoshin, Vladimir V. - Simdyanov, Timur G.
PY  - 2023
TI  - Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov
JF  - Diversity
VL  - 15
IS  - 7
SP  - 1-19
EP  - 1-19
PB  - MDPI
SN  - 14242818
KW  - marine apicomplexans
KW  - host–parasite interactions
KW  - Cryptosporidium
KW  - Eleutheroschizonidae
KW  - Protococcidiida
KW  - polychaetes
KW  - intestinal parasites
KW  - coccidians
UR  - https://www.mdpi.com/1424-2818/15/7/863
N2  - The order Protococcidiida is one of the most poorly studied basal groups of Sporozoa (Apicomplexa sensu stricto). To date, the phylogenetic unity of protococcidians and their relationship with other sporozoans are understudied. Only the protococcidian Eleutheroschizon duboscqi has molecular evidence of a sister position to “true” coccidians (Eimeria, Sarcocystis, Toxoplasma). E. duboscqi is characterized by epicellular development in the so-called parasitophorous sac of the host cell origin. The unusual localization of Eleutheroschizon is comparable to that of Cryptosporidium. We describe a new species of the genus, E. planoratum ex Naineris quadricuspida polychaete from the White Sea, using light and electron microscopy. The morphology of attachment apparatus, phylogenetic analyses of concatenated DNA sequences of the nuclear ribosomal operon (SSU rDNA, ITS1, 5.8S rDNA, ITS2, and LSU rDNA), and compensatory base changes in ITS2 secondary structures of both protococcidians confirm the new species. The resulting phylogenies also confirm that Eleutheroschizon is sister to eimeriid coccidians, while Cryptosporidium tends to be grouped with gregarines. We discuss a new type of endoparasitism among sporozoans—the closed epicellular parasitism that evolved convergently in Eleutheroschizon and Cryptosporidium. The diagnosis of the new species and the emended diagnoses of the species E. duboscqi and the genus Eleutheroschizon are presented.
ER  -

PASKEROVA, Gita G., Tatiana S. MIROLIUBOVA, Andrea BARDŮNEK VALIGUROVÁ, Vladimir V. ALEOSHIN and Timur G. SIMDYANOV. Morphological and Phylogenetic Study of Protococcidians Sheds Light on the Evolution of Epicellular Parasitism in Sporozoa (Apicomplexa), with the Description of Eleutheroschizon planoratum sp. nov. \textit{Diversity}. MDPI, 2023, vol.~15, No~7, p.~1-19. ISSN~1424-2818. Available from: https://dx.doi.org/10.3390/d15070863.

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