Assembly and breakdown of Cajal bodies in accessory nuclei of Hymenoptera

Jaglarz, Mariusz K.; Biliński, S; Kloc, Małgorzata

doi:10.1111/j.1432-0436.2005.07302005.x

Cited by 8 publications

(23 citation statements)

References 53 publications

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“…1B-D, 2C, 4A-C) (Hopkins, 1964;King and Fordy, 1970;Cassidy and King, 1972;Bilinski, 1989;1991a, b;Szklarzewicz et al, 1993;Jablonska and Bilinski, 2001;Bilinski and Kloc, 2002;Jaglarz et al, 2005;Ferree et al, 2006). Pseudonucleoli have been studied in detail in queens of the German wasp, Vespula germanica.…”

Section: B C Amentioning

confidence: 99%

“…One (here termed inclusion A) is composed of a perfectly spherical homogenous body with an attached hemispherical structure comprising numerous electron-dense 20-to 30-nm particles (Figs. 4A, B asterisks, 4C arrowhead) (Jablonska and Bilinski, 2001;Bilinski and Kloc, 2002;Jaglarz et al, 2005). The other pseudonucleolus (termed inclusion B) is less regular in shape and consists of fine flocculent or amorphous material (Fig.…”

Section: B C Amentioning

confidence: 99%

“…Electron microscopy studies have shown, furthermore, that accumulations of fine granular material often associate with both the external and internal membranes of the AN envelope (Fig. 4) (Bilinski, 1991a;Jaglarz et al, 2005).…”

mentioning

confidence: 99%

“…2C,3,4 arrows) that contains two membranes and is virtually identical to the nuclear envelope (King and Fordy, 1970;Meyer et al, 1979;Bilinski, 1991a;Jaglarz et al, 2005). Like its nuclear counterpart, the AN envelope is pierced by pores and covered with ribosomes, and its internal membrane, at least in some species, is lined with distinguishable lamina (Figs.…”

mentioning

confidence: 99%

“…The molecular compositions of these inclusions appear to be the key to under- Blochmann, 1886Palm, 1948Hopkins, 1964 King andRichards, 1968;Ferree et al, 2006King and Fordy, 1970King and Fordy, 1970Meng, 1968, 1970Cassidy and King, 1972Billen, 1985Bilinski, 1991a, 1995aBilinski, 1991bSzklarzewicz et al, 1993Bilinski et al, 1995;Adamska and Bilinski, 1997Klag and Bilinski, 1994Bilinski et al, 1995bZawadzka, 1996 Jablonska andBilinski, 2001;Bilinski and Kloc, 2002;Jaglarz et al, 2005Ferree et al, 2006Ferree et al, 2006 this report this report Diptera Smittia sp. Phryne cincta Phryne fenestralis Tachypeza nubila Zissler and Sander, 1982Meyer et al, 1979Meyer et al, 1979 this report…”

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confidence: 99%

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Accessory nuclei in insect oogenesis: in search of the function of enigmatic organelles

Jaglarz¹,

Kloc²,

Biliński³

2008

Int. J. Dev. Biol.

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This review compiles present knowledge of the structure and molecular composition of the enigmatic cytoplasmic organelles called accessory nuclei. Most typically, they are found in the perinuclear cytoplasm in oocytes of insects and several other invertebrates. Accessory nuclei originate by budding of the oocyte nucleus (germinal vesicle) and are surrounded by an enelope identical to the nuclear envelope. They contain one or several dense inclusions called pseudonucleoli immersed in a translucent ground substance or matrix. Comparative analysis of the morphology, molecular composition and the ultimate fate of accessory nuclei and their inclusions revealed that there are two basic types of these organelles in insect oocytes. In mallophagans, accessory nuclei are associated with the oocyte nucleus throughout entire oogenesis and at least some of them are connected to the germinal vesicle by slender stems. Each accessory nucleus contains a single, dense, RNA-positive inclusion which is likely to correspond to a nucleolus. In hymenopterans, accessory nuclei initially surround the germinal vesicle but during oogenesis they separate from it and migrate toward the peripheral ooplasm. Within the accessory nucleus matrix usually two distinct inclusions develop. One of these is perfectly spherical, contains coilin and small nuclear ribonucleoproteins and is homologous to the Cajal body. In the light of recent discoveries, we discuss the role accessory nuclei play in insect oogenesis and early embryogenesis.

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Section: B C Amentioning

confidence: 99%

Section: B C Amentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Accessory nuclei in insect oogenesis: in search of the function of enigmatic organelles

Jaglarz¹,

Kloc²,

Biliński³

2008

Int. J. Dev. Biol.

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Ovary of Matsucoccus pini (Insecta, Hemiptera, Coccinea: Matsucoccidae): Morphology, ultrastructure, and phylogenetic implications

Szklarzewicz

Michalik

Kalandyk-Kołodziejczyk

et al. 2014

Microscopy Res & Technique

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The structure of ovary in a representative of the scale insect family Matsucoccidae, Matsucoccus pini, is described at the ultrastructural level. The paired ovaries of M. pini are composed of about 50 ovarioles of telotrophic type that develop asynchronously. An individual ovariole consists of an anterior tropharium (trophic chamber) and posterior vitellarium. The tropharium encloses trophocytes (nurse cells) and early previtellogenic oocytes termed arrested oocytes. In the vitellarium from 1 to 6, linearly arranged oocytes may develop. Analysis of serial sections has shown that each ovariole contains 32 germ cells (trophocytes, arrested oocytes, and developing oocytes). In the cytoplasm of all these cells, small rod-shaped bacteria are present. In the early vitellogenic oocytes, accessory nuclei arise. As vitellogenesis progresses, these nuclei migrate toward the cortical ooplasm. The obtained results are discussed in a phylogenetic context.

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Cajal bodies and interchromatin granule clusters in cricket oocytes: Composition, dynamics and interactions

Stepanova

Bogolyubov

Skovorodkin

et al. 2007

Cell Biology International

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The organization and molecular composition of complicated Cajal bodies (CBs) and interchromatin granule clusters (IGCs) in oocytes of the house cricket, Acheta domesticus, were studied using immunofluorescent/confocal and Immunogold labeling/electron microscopy. In A. domesticus oocytes, the CB consists of the fibrillar matrix and a central cavity containing a predominantly granular body with insertions of tightly packed fibrillar material. The latter structure was identified as an "internal" IGC, since it is enriched with the SC35 protein, a marker for IGCs. The IGCs located outside the CB were also identified. Microinjections of the fluorescein-tagged U7 snRNA into the ooplasm showed the targeting of the U7 to the matrix of the CB. Some other essential CB components (coilin, snRNPs, fibrillarin) were found to be colocalized in the matrix of the CB. Neither confocal nor Immunogold microscopy revealed significant amounts of RNA polymerase II (pol II) in the CB of A. domesticus oocytes. The splicing factor SC35 was detected in the matrix of the CB. In oocytes treated with DRB, the amount of IGCs in the nucleoplasm increased significantly, granular and fibrillar components of IGCs were segregated, and the fibrillar areas accumulated pol II. Additionally, IG-like granules were shown to display on the surface of the CB probably due to a shifting from the internal IGC. We believe that in A. domesticus oocytes, CBs are involved in nuclear distribution of splicing factors, but their role in pol II transport is less significant. We also suggest that the formation of complicated CBs is a result of interconnection between two different nuclear domains, CBs and IGCs.

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Assembly and breakdown of Cajal bodies in accessory nuclei of Hymenoptera

Cited by 8 publications

References 53 publications

Accessory nuclei in insect oogenesis: in search of the function of enigmatic organelles

Accessory nuclei in insect oogenesis: in search of the function of enigmatic organelles

Ovary of Matsucoccus pini (Insecta, Hemiptera, Coccinea: Matsucoccidae): Morphology, ultrastructure, and phylogenetic implications

Cajal bodies and interchromatin granule clusters in cricket oocytes: Composition, dynamics and interactions

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