Microscopical Studies on Ministeria vibrans Tong, 1997 (Filasterea) Highlight the Cytoskeletal Structure of the Common Ancestor of Filasterea, Metazoa and Choanoflagellata

Alexander P. Mylnikov, Denis V. Tikhonenkov, Sergey A. Karpov, Claudia Wylezich

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

Ministeria vibrans (Filasterea) is a tiny amoeboid species described by Tong in 1997. It has been sporadically found in different habitats, and cultured strains were established. M. vibrans is well characterised by molecular phylogeny but until now was not ultrastructurally investigated in detail. Here, we provide the ultrastructure for this species based on a new strain isolated from oxygen-depleted water of the Baltic Sea. A thin vibrating flagellum could be observed but no vibrating movement of the cell body and no stalk. Our first ultrastructural study of a filasterean taxon revealed radial microvilli supported by bundles of microfilaments. Two centrioles located in the nuclear pit can migrate to the cell periphery and transform into the kinetid: the centriole orthogonal to the kinetosome with a fibrillar root and a basal foot that initiates microtubules. Microvilli in Ministeria suggest their presence in the common ancestor of Filasterea and Choanoflagellata. The kinetid structure of Ministeria is similar to that of the choanocytes of the most deep-branching sponges, differing essentially from the kinetid of choanoflagellates. Thus, kinetid and microvilli of Ministeria illustrate features of the common ancestor of three holozoan groups: Filasterea, Metazoa and Choanoflagellata.

Язык оригиналаанглийский
Страницы (с-по)385-396
ЖурналProtist
Том170
Номер выпуска4
Ранняя дата в режиме онлайн22 авг 2019
DOI
СостояниеОпубликовано - авг 2019

Отпечаток

Choanoflagellata
Microvilli
Centrioles
Basal Bodies
Flagella
Porifera
Phylogeny
Actin Cytoskeleton
Microtubules
Ecosystem
Foot
Oxygen
Water

Предметные области Scopus

  • Микробиология

Цитировать

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title = "Microscopical Studies on Ministeria vibrans Tong, 1997 (Filasterea) Highlight the Cytoskeletal Structure of the Common Ancestor of Filasterea, Metazoa and Choanoflagellata",
abstract = "Ministeria vibrans (Filasterea) is a tiny amoeboid species described by Tong in 1997. It has been sporadically found in different habitats, and cultured strains were established. M. vibrans is well characterised by molecular phylogeny but until now was not ultrastructurally investigated in detail. Here, we provide the ultrastructure for this species based on a new strain isolated from oxygen-depleted water of the Baltic Sea. A thin vibrating flagellum could be observed but no vibrating movement of the cell body and no stalk. Our first ultrastructural study of a filasterean taxon revealed radial microvilli supported by bundles of microfilaments. Two centrioles located in the nuclear pit can migrate to the cell periphery and transform into the kinetid: the centriole orthogonal to the kinetosome with a fibrillar root and a basal foot that initiates microtubules. Microvilli in Ministeria suggest their presence in the common ancestor of Filasterea and Choanoflagellata. The kinetid structure of Ministeria is similar to that of the choanocytes of the most deep-branching sponges, differing essentially from the kinetid of choanoflagellates. Thus, kinetid and microvilli of Ministeria illustrate features of the common ancestor of three holozoan groups: Filasterea, Metazoa and Choanoflagellata.",
keywords = "coastal picoplankton, Electron microscopy, Filasterea, kinetid, microvilli, vibrating flagellum",
author = "Mylnikov, {Alexander P.} and Tikhonenkov, {Denis V.} and Karpov, {Sergey A.} and Claudia Wylezich",
year = "2019",
month = "8",
doi = "10.1016/j.protis.2019.07.001",
language = "English",
volume = "170",
pages = "385--396",
journal = "Protist",
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Microscopical Studies on Ministeria vibrans Tong, 1997 (Filasterea) Highlight the Cytoskeletal Structure of the Common Ancestor of Filasterea, Metazoa and Choanoflagellata. / Mylnikov, Alexander P.; Tikhonenkov, Denis V.; Karpov, Sergey A.; Wylezich, Claudia.

В: Protist, Том 170, № 4, 08.2019, стр. 385-396.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Microscopical Studies on Ministeria vibrans Tong, 1997 (Filasterea) Highlight the Cytoskeletal Structure of the Common Ancestor of Filasterea, Metazoa and Choanoflagellata

AU - Mylnikov, Alexander P.

AU - Tikhonenkov, Denis V.

AU - Karpov, Sergey A.

AU - Wylezich, Claudia

PY - 2019/8

Y1 - 2019/8

N2 - Ministeria vibrans (Filasterea) is a tiny amoeboid species described by Tong in 1997. It has been sporadically found in different habitats, and cultured strains were established. M. vibrans is well characterised by molecular phylogeny but until now was not ultrastructurally investigated in detail. Here, we provide the ultrastructure for this species based on a new strain isolated from oxygen-depleted water of the Baltic Sea. A thin vibrating flagellum could be observed but no vibrating movement of the cell body and no stalk. Our first ultrastructural study of a filasterean taxon revealed radial microvilli supported by bundles of microfilaments. Two centrioles located in the nuclear pit can migrate to the cell periphery and transform into the kinetid: the centriole orthogonal to the kinetosome with a fibrillar root and a basal foot that initiates microtubules. Microvilli in Ministeria suggest their presence in the common ancestor of Filasterea and Choanoflagellata. The kinetid structure of Ministeria is similar to that of the choanocytes of the most deep-branching sponges, differing essentially from the kinetid of choanoflagellates. Thus, kinetid and microvilli of Ministeria illustrate features of the common ancestor of three holozoan groups: Filasterea, Metazoa and Choanoflagellata.

AB - Ministeria vibrans (Filasterea) is a tiny amoeboid species described by Tong in 1997. It has been sporadically found in different habitats, and cultured strains were established. M. vibrans is well characterised by molecular phylogeny but until now was not ultrastructurally investigated in detail. Here, we provide the ultrastructure for this species based on a new strain isolated from oxygen-depleted water of the Baltic Sea. A thin vibrating flagellum could be observed but no vibrating movement of the cell body and no stalk. Our first ultrastructural study of a filasterean taxon revealed radial microvilli supported by bundles of microfilaments. Two centrioles located in the nuclear pit can migrate to the cell periphery and transform into the kinetid: the centriole orthogonal to the kinetosome with a fibrillar root and a basal foot that initiates microtubules. Microvilli in Ministeria suggest their presence in the common ancestor of Filasterea and Choanoflagellata. The kinetid structure of Ministeria is similar to that of the choanocytes of the most deep-branching sponges, differing essentially from the kinetid of choanoflagellates. Thus, kinetid and microvilli of Ministeria illustrate features of the common ancestor of three holozoan groups: Filasterea, Metazoa and Choanoflagellata.

KW - coastal picoplankton

KW - Electron microscopy

KW - Filasterea

KW - kinetid

KW - microvilli

KW - vibrating flagellum

UR - http://www.scopus.com/inward/record.url?scp=85071624053&partnerID=8YFLogxK

U2 - 10.1016/j.protis.2019.07.001

DO - 10.1016/j.protis.2019.07.001

M3 - Article

C2 - 31493690

AN - SCOPUS:85071624053

VL - 170

SP - 385

EP - 396

JO - Protist

JF - Protist

SN - 1434-4610

IS - 4

ER -