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Balbiani body (Bb) is an intricate, oocyte-specific organelle complex described in the ooplasm of nearly all examined vertebrates and invertebrates. The Bb is devoid of a limiting membrane and consists of such organelles as elements of endoplasmic reticulum (ER), Golgi complexes (GCs), mitochondria, and characteristic accumulations of fibrillo-granular material, termed the “nuage.” Despite numerous studies, the functioning of the Bb remains not completely understood. Until now at least four disparate functions have been attributed to the Bb: (1) delivery of germinal granules and localized mRNAs to the oocyte vegetal cortex; (2) transfer of mitochondria to the polar (germ) plasm; (3) selective elimination of dysfunctional (damaged, containing mutated mitochondrial DNA (mtDNA)) mitochondrial units in female germline cells; and (4) formation of oocyte reserve materials, e.g., lipid droplets. Such functional variability obviously raises several intriguing questions for students of developmental and cellular biology. Here we present the results of our studies on oogenesis of bush crickets that advance our understanding of the Bb function and anagenesis of this organelle complex during the evolution of bilateral animals.

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Analysis of Bush Cricket Oogenesis Provides an Insight into the Function and Anagenesis of an Enigmatic Organelle Assemblage: The Balbiani Body

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  • 发表日期：

    2026年

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  • Szczepan M. Bilinski,
  • Malgorzata Sekula,
  • Magda Sochaczewska,
  • Waclaw Tworzydlo

摘要

Balbiani body (Bb) is an intricate, oocyte-specific organelle complex described in the ooplasm of nearly all examined vertebrates and invertebrates. The Bb is devoid of a limiting membrane and consists of such organelles as elements of endoplasmic reticulum (ER), Golgi complexes (GCs), mitochondria, and characteristic accumulations of fibrillo-granular material, termed the “nuage.” Despite numerous studies, the functioning of the Bb remains not completely understood. Until now at least four disparate functions have been attributed to the Bb: (1) delivery of germinal granules and localized mRNAs to the oocyte vegetal cortex; (2) transfer of mitochondria to the polar (germ) plasm; (3) selective elimination of dysfunctional (damaged, containing mutated mitochondrial DNA (mtDNA)) mitochondrial units in female germline cells; and (4) formation of oocyte reserve materials, e.g., lipid droplets. Such functional variability obviously raises several intriguing questions for students of developmental and cellular biology. Here we present the results of our studies on oogenesis of bush crickets that advance our understanding of the Bb function and anagenesis of this organelle complex during the evolution of bilateral animals.