Kinetid in larval cells of Spongillida (Porifera: Demospongiae): tracing the ancestral traits

Standard

Kinetid in larval cells of Spongillida (Porifera: Demospongiae): tracing the ancestral traits. / Sokolova, Agniya M. ; Pozdnyakov, Igor R. ; Schepetov, Dmitry M. ; Ereskovsky, Alexander V. ; Karpov, Sergey A. .

In: Organisms Diversity and Evolution, Vol. 20, No. 4, 01.12.2020, p. 669-680.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{c9dd841c233f434a9c5bed8718f9f3b9,

title = "Kinetid in larval cells of Spongillida (Porifera: Demospongiae): tracing the ancestral traits",

abstract = "The kinetid (flagellar/ciliary apparatus) of eukaryotic cells is an important source of phylogenetic information. It was found to be a prospective morphological phylogenetic marker in sponges, since its arrangement in choanocytes is congruent with the topology of the phylogenetic trees. However, investigation of the kinetid of sponge larval cells remains fragmentary. Here, we report the results of an ultrastructural study on the larval kinetids of the freshwater sponges Eunapius fragilis and Lubomirskia baikalensis (Demospongiae: Spongillida). Their kinetids were found to comprise a kinetosome associated with an accessory centriole and linked to the nucleus by a simple fibrillar root. The kinetosome bears a transverse cytoskeleton: filamentous train and microtubules which radiate from a microtubule organising centre (MTOC) shaped as a large hollow foot. In the short transition zone, between the central axonemal microtubules and kinetosome, a transverse plate with an axosome (central thickening) occurs. We have reviewed the kinetids of different sponge larvae to reconstruct the ancestral state of these traits. Thus, we suggest that spongillids retain the plesiomorphic characteristics of roots and an accessory centriole. But they possess the peculiarities of the transition zone, transverse cytoskeleton and MTOC structure.",

keywords = "freshwater sponges, sponge larvae, cilia/flagella, ultrastructure, Freshwater sponges, SPONGE LARVAE, Cilia/flagella, Ultrastructure, Sponge larvae",

author = "Sokolova, {Agniya M.} and Pozdnyakov, {Igor R.} and Schepetov, {Dmitry M.} and Ereskovsky, {Alexander V.} and Karpov, {Sergey A.}",

note = "Publisher Copyright: {\textcopyright} 2020, Gesellschaft f{\"u}r Biologische Systematik.",

year = "2020",

month = dec,

day = "1",

doi = "10.1007/s13127-020-00460-1",

language = "English",

volume = "20",

pages = "669--680",

journal = "Organisms Diversity and Evolution",

issn = "1439-6092",

publisher = "Springer Nature",

number = "4",

}

RIS

TY - JOUR

T1 - Kinetid in larval cells of Spongillida (Porifera: Demospongiae): tracing the ancestral traits

AU - Sokolova, Agniya M.

AU - Pozdnyakov, Igor R.

AU - Schepetov, Dmitry M.

AU - Ereskovsky, Alexander V.

AU - Karpov, Sergey A.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - The kinetid (flagellar/ciliary apparatus) of eukaryotic cells is an important source of phylogenetic information. It was found to be a prospective morphological phylogenetic marker in sponges, since its arrangement in choanocytes is congruent with the topology of the phylogenetic trees. However, investigation of the kinetid of sponge larval cells remains fragmentary. Here, we report the results of an ultrastructural study on the larval kinetids of the freshwater sponges Eunapius fragilis and Lubomirskia baikalensis (Demospongiae: Spongillida). Their kinetids were found to comprise a kinetosome associated with an accessory centriole and linked to the nucleus by a simple fibrillar root. The kinetosome bears a transverse cytoskeleton: filamentous train and microtubules which radiate from a microtubule organising centre (MTOC) shaped as a large hollow foot. In the short transition zone, between the central axonemal microtubules and kinetosome, a transverse plate with an axosome (central thickening) occurs. We have reviewed the kinetids of different sponge larvae to reconstruct the ancestral state of these traits. Thus, we suggest that spongillids retain the plesiomorphic characteristics of roots and an accessory centriole. But they possess the peculiarities of the transition zone, transverse cytoskeleton and MTOC structure.

AB - The kinetid (flagellar/ciliary apparatus) of eukaryotic cells is an important source of phylogenetic information. It was found to be a prospective morphological phylogenetic marker in sponges, since its arrangement in choanocytes is congruent with the topology of the phylogenetic trees. However, investigation of the kinetid of sponge larval cells remains fragmentary. Here, we report the results of an ultrastructural study on the larval kinetids of the freshwater sponges Eunapius fragilis and Lubomirskia baikalensis (Demospongiae: Spongillida). Their kinetids were found to comprise a kinetosome associated with an accessory centriole and linked to the nucleus by a simple fibrillar root. The kinetosome bears a transverse cytoskeleton: filamentous train and microtubules which radiate from a microtubule organising centre (MTOC) shaped as a large hollow foot. In the short transition zone, between the central axonemal microtubules and kinetosome, a transverse plate with an axosome (central thickening) occurs. We have reviewed the kinetids of different sponge larvae to reconstruct the ancestral state of these traits. Thus, we suggest that spongillids retain the plesiomorphic characteristics of roots and an accessory centriole. But they possess the peculiarities of the transition zone, transverse cytoskeleton and MTOC structure.

KW - freshwater sponges, sponge larvae, cilia/flagella, ultrastructure

KW - Freshwater sponges

KW - SPONGE LARVAE

KW - Cilia/flagella

KW - Ultrastructure

KW - Sponge larvae

UR - http://www.scopus.com/inward/record.url?scp=85091133561&partnerID=8YFLogxK

U2 - 10.1007/s13127-020-00460-1

DO - 10.1007/s13127-020-00460-1

M3 - Article

VL - 20

SP - 669

EP - 680

JO - Organisms Diversity and Evolution

JF - Organisms Diversity and Evolution

SN - 1439-6092

IS - 4

ER -

ID: 61356716