Morphology and ultrastructure of the Balbiani body in the oocytes of closely related bush cricket species. Shared features reveal important aspect of functioning

Sekuła, Małgorzata; Tworzydło, Wacław; Biliński, S

doi:10.1016/j.zool.2022.126051

Cited by 3 publications

(8 citation statements)

References 32 publications

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“…Performed computer aided 3D reconstructions of whole oocytes based on serial semi-thin sections showed that during early previtellogenesis the Bb is much larger than described earlier using incidental (not serial) sections only (see 3 for further details). It filled almost entire ooplasm (Fig.…”

Section: Resultsmentioning

confidence: 80%

“…1 B1). Such organization of early meiotic Bb is characteristic of other basally branched insects 3 , 14 , 27 .…”

Section: Resultsmentioning

confidence: 84%

“…Ovaries of Meconema meridionale are, as in all other orthopterans, panoistic (i.e., devoid of supporting nurse cells) and composed of several, synchronously developing functional units, termed the ovarioles 3 . Fully grown ovarioles of Meconema comprise anteriorly located terminal filament followed by a small germarium and elongated vitellarium that consists of linearly arranged ovarian follicles.…”

Section: Resultsmentioning

confidence: 99%

“…As a rule, the Bb is a transient complex of diverse organelles located next to the oocyte nucleus (germinal vesicle) and often attached to its envelope. Morphology of the Bb may differ even in related species 3 and appears dynamic throughout its morphogenesis, i.e., its rise in early oocytes, subsequent growth, and ultimate fragmentation/degradation 1 – 6 . Despite this variability, the Bbs always contain two constant elements: mitochondria and accumulations of electron-dense fibrillo-granular material, the nuage (the function and composition of the nuage are discussed in 2 , 7 , 8 ).…”

Section: Introductionmentioning

confidence: 99%

“…A common bush-cricket, Meconema meridionale, served as a model in these studies. We selected this species because of the following reasons: (1) the Bb of Meconema , as these of other bush crickets 3 , 14 , is relatively large and easily recognizable, even at the level of light microscopy; (2) oocytes of bush crickets are morphologically simple and devoid of any specialized ooplasm regions, such as the germ/pole plasm 3 , 14 . The latter trait facilitates the analysis of the Bb morphogenesis and (especially) the fate of the Bb constituents after the dispersion of this organelle assemblage.…”

Section: Introductionmentioning

confidence: 99%

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Balbiani body of basal insects is potentially involved in multiplication and selective elimination of mitochondria

Sekula,

Tworzydlo,

Bilinski

2024

Sci Rep

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Oocytes of both vertebrates and invertebrates often contain an intricate organelle assemblage, termed the Balbiani body (Bb). It has previously been suggested that this assemblage is involved in the delivery of organelles and macromolecules to the germ plasm, formation of oocyte reserve materials, and transfer of mitochondria to the next generation. To gain further insight into the function of the Bb, we performed a series of analyses and experiments, including computer-aided 3-dimensional reconstructions, detection of DNA (mtDNA) synthesis as well as immunolocalization studies. We showed that in orthopteran Meconema meridionale, the Bb comprises a network of mitochondria and perinuclear nuage aggregations. As oogenesis progresses, the network expands filling almost entire ooplasm, then partitions into several smaller entities, termed micro-networks, and ultimately into individual mitochondria. As in somatic cells, this process involves microfilaments and elements of endoplasmic reticulum. We showed also that at least some of the individual mitochondria are surrounded by phagophores and eliminated via mitophagy. These findings support the idea that the Bb is implicated in the multiplication and selective elimination of (defective) mitochondria and therefore may participate in the transfer of undamaged (healthy) mitochondria to the next generation.

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Section: Resultsmentioning

confidence: 80%

“…1 B1). Such organization of early meiotic Bb is characteristic of other basally branched insects 3 , 14 , 27 .…”

Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Balbiani body of basal insects is potentially involved in multiplication and selective elimination of mitochondria

Sekula,

Tworzydlo,

Bilinski

2024

Sci Rep

Self Cite

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The Ovary Structure in Terrestrial Parasitengona Mites: The Case of Trombidiidae (Acariformes: Parasitengona)

Derdak,

Jędrzejowska,

Mąkol

2024

Journal of Morphology

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Species of mites (Chelicerata: Arachnida) show a great variety of structures of the female gonads. In both evolutionary lines, Acariformes and Parasitiformes, the panoistic ovary, in which all germline cysts differentiate into oocytes, and the meroistic ovary, in which the oocytes grow supported by the nurse cells, have been documented. A less pronounced variation in the gonad structure could be expected at lower systematic levels, hence, we ask about the degree of differences within the family that is subordinate to Acariformes and represents the cohort Parasitengona. Based on the members of Trombidiidae (Acariformes: Trombidiformes, Parasitengona, Trombidioidea), we test the hypothesis that the general ovary type is constant at the family level. Our previous research on the female gonad in Allothrombium fuliginosum revealed that the meroistic ovary occurs in these mites. Here, we proceed with a detailed insight into the ovary structure in A. fuliginosum and examine the structure of the female gonad in other members of Trombidiidae, focusing on the following representatives of its nominotypical genus Trombidium: Trombidium brevimanum, Trombidium holosericeum, Trombidium heterotrichum, and Trombidium latum. For all species, studied with light, fluorescence, and transmission electron microscopy, we could confirm the presence of the meroistic ovary that is highly similar with respect to general architecture. The germline cysts show similarities in general morphology and the mode of germline cell differentiation; they consist of a few nurse cells and one oocyte. The connection between the nurse cells and oocytes is maintained by trophic cords that serve for the transport of organelles and macromolecules. Our results confirm the constancy of the structure of the female gonad at the intrageneric level and provide further support for the hypothesis on the lack of differences at the intrafamily level.

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Female Germline Cysts in Animals: Evolution and Function

Brubacher

2023

Results and Problems in Cell Differentiation

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Morphology and ultrastructure of the Balbiani body in the oocytes of closely related bush cricket species. Shared features reveal important aspect of functioning

Cited by 3 publications

References 32 publications

Balbiani body of basal insects is potentially involved in multiplication and selective elimination of mitochondria

Balbiani body of basal insects is potentially involved in multiplication and selective elimination of mitochondria

The Ovary Structure in Terrestrial Parasitengona Mites: The Case of Trombidiidae (Acariformes: Parasitengona)

Female Germline Cysts in Animals: Evolution and Function

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