An Ultrastructural Study of the Centrosome and Centrioles in Gametogenesis and Early Embryogenesis of Lymnaea stagnalis L.

Krioutchkova, Marina M.; Онищенко, Г. Е.; Chentsov, Yurii S.

doi:10.1006/jsbi.1994.1007

Cited by 8 publications

(4 citation statements)

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“…An intermediate situation compared to the above two modes occurs in the snail Lymnea stagnalis . Here, maturing oocytes are endowed with only one pair of centrioles [88]. During meiosis I, the two spindle poles each harbour one centriole, such that one is extruded into the first polar body.…”

Section: Centriole Elimination In the Female Germlinementioning

confidence: 99%

“…During meiosis I, the two spindle poles each harbour one centriole, such that one is extruded into the first polar body. During meiosis II, the sole remaining maternal centriole is positioned outward and therefore subsequently extruded into the second polar body, whereas the inward spindle pole is organized by the two sperm-derived centrioles [88]. Furthermore, in the androgenetic clam Corbicula leana , the sole meiotic spindle yields two polar bodies that contain the complete maternal DNA complement and four centrioles, with the sperm subsequently restoring DNA and centriole contents [89].…”

Section: Centriole Elimination In the Female Germlinementioning

confidence: 99%

“…[94] R. rattus sperm———Woolley & Fawcett [128] L. stagnalis sperm———Krioutchkova et al . [88]insects (9 species representing Coleoptera, Ephemeroptera, Diptera, Trichoptera, Lepidoptera, Homoptera, and Hemiptera)sperm(✓)——Phillips [129]many speciesoocytes(✓)reviewed in Manandhar et al . [77]…”

Section: How Frequent Is Centriole Elimination?mentioning

confidence: 99%

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Towards understanding centriole elimination

Kalbfuss,

Gönczy

2023

Open Biol.

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Centrioles are microtubule-based structures crucial for forming flagella, cilia and centrosomes. Through these roles, centrioles are critical notably for proper cell motility, signalling and division. Recent years have advanced significantly our understanding of the mechanisms governing centriole assembly and architecture. Although centrioles are typically very stable organelles, persisting over many cell cycles, they can also be eliminated in some cases. Here, we review instances of centriole elimination in a range of species and cell types. Moreover, we discuss potential mechanisms that enable the switch from a stable organelle to a vanishing one. Further work is expected to provide novel insights into centriole elimination mechanisms in health and disease, thereby also enabling scientists to readily manipulate organelle fate.

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Section: Centriole Elimination In the Female Germlinementioning

confidence: 99%

Section: Centriole Elimination In the Female Germlinementioning

confidence: 99%

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Towards understanding centriole elimination

Kalbfuss,

Gönczy

2023

Open Biol.

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“…In Drosophila, a centrosome maintenance program was elucidated that depends on Polo and PCM, which is turned off during oogenesis (Pimenta-Marques et al, 2016; see main text for discussion). In some species, centrioles are eliminated together with DNA through their extrusion inside the polar bodies during meiotic divisions, such as in snail oocytes, which only contain a single pair of centrioles (Krioutchkova et al, 1994). Interestingly, echinoderms (sea urchin, starfish and sea-cucumber) use both strategies to eliminate centrioles: extrusion and elimination.…”

Section: Box 2 Centrosome Elimination Is Essential In Oogenesis Of Mmentioning

confidence: 99%

Maintaining centrosomes and cilia

Werner

Pimenta-Marques

Bettencourt-Dias

2017

Journal of Cell Science

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Centrosomes and cilia are present in organisms from all branches of the eukaryotic tree of life. These structures are composed of microtubules and various other proteins, and are required for a plethora of cell processes such as structuring the cytoskeleton, sensing the environment, and motility. Deregulation of centrosome and cilium components leads to a wide range of diseases, some of which are incompatible with life. Centrosomes and cilia are thought to be very stable and can persist over long periods of time. However, these structures can disappear in certain developmental stages and diseases. Moreover, some centrosome and cilia components are quite dynamic. While a large body of knowledge has been produced regarding the biogenesis of these structures, little is known about how they are maintained. In this Review, we propose the existence of specific centrosome and cilia maintenance programs, which are regulated during development and homeostasis, and when deregulated can lead to disease.

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Exclusively juvenile centrioles inXenopus laevis oocytes injected with preparations of mature centrioles

Nadezhdina

Skoblina

Fais

et al. 1999

Microsc. Res. Tech.

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Activated oocytes of Xenopus laevis were injected with centriole preparations isolated either from spermatozoa of loach fish Misgurnus fossilis or from rat liver. These injections induced the development of cytasters in the ooplasm and egg cleavage. Electron microscopic study of cytasters was made at the stage that corresponded to interphase between first and second cleavage divisions. This study revealed in cytasters singleton centrioles surrounded by pericentriolar material and numerous microtubules. Surprisingly, the ultrastructure of centrioles in cytasters corresponded to that of juvenile, newly formed vertebrate centrioles, whereas the injected preparations contained only adult mature centrioles. We suggested that xenogenic centrioles injected to Xenopus laevis oocytes could dissolve after formation of centrioles made from molecules of oocyte origin. A special mechanism that eliminates male centrioles after egg fertilization is speculated. Microsc. Res. Tech. 44:430–434, 1999. © 1999 Wiley‐Liss, Inc.

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An Ultrastructural Study of the Centrosome and Centrioles in Gametogenesis and Early Embryogenesis of Lymnaea stagnalis L.

Cited by 8 publications

References 0 publications

Towards understanding centriole elimination

Towards understanding centriole elimination

Maintaining centrosomes and cilia

Exclusively juvenile centrioles inXenopus laevis oocytes injected with preparations of mature centrioles

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