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@article{1354184,
author = {Schrevel, Joseph and Valigurová, Andrea and Prensier, Gérard and Chambouvet, Aurélie and Florent, Isabelle and Guillou, Laure},
article_number = {4},
doi = {http://dx.doi.org/10.1016/j.protis.2016.06.001},
keywords = {Apicomplexa; Archigregarines; Selenidium pendula; phylogeny; sporozoite.; ultrastructure},
language = {eng},
issn = {1434-4610},
journal = {Protist},
title = {Ultrastructure of Selenidium pendula, the Type Species of Archigregarines, and Phylogenetic Relations to Other Marine Apicomplexa.},
url = {http://www.sciencedirect.com/science/article/pii/S1434461016300268},
volume = {167},
year = {2016}
}
TY - JOUR
ID - 1354184
AU - Schrevel, Joseph - Valigurová, Andrea - Prensier, Gérard - Chambouvet, Aurélie - Florent, Isabelle - Guillou, Laure
PY - 2016
TI - Ultrastructure of Selenidium pendula, the Type Species of Archigregarines, and Phylogenetic Relations to Other Marine Apicomplexa.
JF - Protist
VL - 167
IS - 4
SP - 339-368
EP - 339-368
SN - 14344610
KW - Apicomplexa
KW - Archigregarines
KW - Selenidium pendula
KW - phylogeny
KW - sporozoite.
KW - ultrastructure
UR - http://www.sciencedirect.com/science/article/pii/S1434461016300268
N2 - Archigregarines, an early branching lineage within Apicomplexa, are a poorly-known group of invertebrate parasites. By their phylogenetic position, archigregarines are an important lineage to understand the functional transition that occurred between free-living flagellated predators to obligatory parasites in Apicomplexa. In this study, we provide new ultrastructural data and phylogenies based on SSU rDNA sequences using the type species of archigregarines, the Selenidiidae Selenidium pendulaGiard, 1884. We describe for the first time the syzygy and early gamogony at the ultrastructural level, revealing a characteristic nuclear multiplication with centrocones, cryptomitosis, filamentous network of chromatin, a cyst wall secretion and a 9+0 flagellar axoneme of the male gamete. S. pendula belongs to a monophyletic lineage that includes several other related species, all infecting Sedentaria Polychaeta (Spionidae, Sabellaridae, Sabellidae and Cirratulidae). All of these Selenidium species exhibit similar biological characters: a cell cortex with the plasma membrane - inner membrane complex - subpellicular microtubule sets, an apical complex with the conoid, numerous rhoptries and micronemes, a myzocytosis with large food vacuoles, a nuclear multiplication during syzygy and young gamonts. Two other distantly related Selenidium-like lineages infect Terebellidae and Sipunculida, underlying the ability of archigregarines to parasite a wide range of marine hosts.
ER -
SCHREVEL, Joseph, Andrea VALIGUROVÁ, Gérard PRENSIER, Aurélie CHAMBOUVET, Isabelle FLORENT and Laure GUILLOU. Ultrastructure of Selenidium pendula, the Type Species of Archigregarines, and Phylogenetic Relations to Other Marine Apicomplexa. \textit{Protist}. 2016, vol.~167, No~4, p.~339-368. ISSN~1434-4610. Available from: https://dx.doi.org/10.1016/j.protis.2016.06.001.
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