Ultrastructure and molecular phylogeny of Phalansterium foulumis sp. nov. (Amoebozoa Variosea)
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Ultrastructure and molecular phylogeny of Phalansterium foulumis sp. nov. (Amoebozoa Variosea). / Karpov, Sergey A.; Smakova, Lyubov A.; Malavin, Stanislav A.; Ekelund, Flemming; Smirnov, Alexey V.
In: Protistology, Vol. 17, No. 3, 2023, p. 129-141.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Ultrastructure and molecular phylogeny of Phalansterium foulumis sp. nov. (Amoebozoa Variosea)
AU - Karpov, Sergey A.
AU - Smakova, Lyubov A.
AU - Malavin, Stanislav A.
AU - Ekelund, Flemming
AU - Smirnov, Alexey V.
N1 - Publisher Copyright: © 2023 The Author(s).
PY - 2023
Y1 - 2023
N2 - Representatives of the genus Phalansterium have single anterior flagellum surrounded by cytoplasmic collar. They belong to the class Variosea, which includes both typical amoeboid organisms (e.g., Flamella, Filamoeba) and some flagellates (e.g., Phalansterium, Multicilia). A recent study revealed Phalansterium arcticum as a very polymorphic species with both sedentary and swimming cells. It also clarified the mode of phagocytosis, and showed a cell division, but the ultrastructure of the cell is still not sufficient. Here, we present for the first time a thorough ultrastructural investigation of the soil flagellate Phalansterium “solitarium” strain Ph185 of SCCAP. We demonstrate that Phalansterium uses pseudopodia to take up bacteria inside its collar, and suggest that the inner cell asymmetry of Phalansterium cytoskeleton is associated with its mode of feeding. On the base of morphology and molecular phylogeny, we describe a new species Phalansterium foulumis with the type strain SCCAP-Ph185.
AB - Representatives of the genus Phalansterium have single anterior flagellum surrounded by cytoplasmic collar. They belong to the class Variosea, which includes both typical amoeboid organisms (e.g., Flamella, Filamoeba) and some flagellates (e.g., Phalansterium, Multicilia). A recent study revealed Phalansterium arcticum as a very polymorphic species with both sedentary and swimming cells. It also clarified the mode of phagocytosis, and showed a cell division, but the ultrastructure of the cell is still not sufficient. Here, we present for the first time a thorough ultrastructural investigation of the soil flagellate Phalansterium “solitarium” strain Ph185 of SCCAP. We demonstrate that Phalansterium uses pseudopodia to take up bacteria inside its collar, and suggest that the inner cell asymmetry of Phalansterium cytoskeleton is associated with its mode of feeding. On the base of morphology and molecular phylogeny, we describe a new species Phalansterium foulumis with the type strain SCCAP-Ph185.
KW - flagellar apparatus
KW - molecular phylogeny
KW - Phalansterium
KW - soil flagellate
KW - taxonomy
KW - ultrastructure
U2 - 10.21685/1680-0826-2023-17-3-1
DO - 10.21685/1680-0826-2023-17-3-1
M3 - Journal article
AN - SCOPUS:85180068677
VL - 17
SP - 129
EP - 141
JO - Protistology
JF - Protistology
SN - 1680-0826
IS - 3
ER -
ID: 377802567