Balbiani bodies in cricket oocytes: Development, ultrastructure, and presence of localized RNAs

Bradley, James T.; Estridge, Barbara H.; Kloc, Małgorzata; Wolfe, Karen G.; Biliński, S

doi:10.1046/j.1432-0436.2001.670404.x

Cited by 22 publications

(18 citation statements)

References 32 publications

(46 reference statements)

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“…In Xenopus the 'METRO' region of the Balbiani body associates with RNAs that will later become localized in germ plasm at the vegetal pole (Forristall et al, 1995;Kloc and Etkin, 1995), and similar links between Balbiani bodies and germ plasm constituents have been noted in diverse species (Kobayashi and Iwamatsu, 2000;Tsunekawa et al, 2000;Bradley et al, 2001). Consequently, we investigated whether Drosophila mRNAs that are known to localize to the early oocyte and participate in germ plasm formation (reviewed by Saffmann and Lasko, 1999) associate with the Drosophila R. T. Cox and A. C. Spradling Balbiani body using antibody/in situ hybridization double labeling experiments.…”

Section: Balbiani Bodies Are Associated With Localized Rnas and Proteinsmentioning

confidence: 85%

“…Mitochondria in some vertebrate eggs associate with germ plasm precursors known as granulofibrillar material or nuage beginning very early in oogenesis (Al-Mukhtar and Webb, 1971;Heasman et al, 1984) (reviewed by Saffman and Lasko, 1999). Specific RNAs destined for germ plasm also associate with the Balbiani body and/or forming germ granules (Forristall et al, 1995;Kloc and Etkin, 1995;Bradley et al, 2001). In Drosophila eggs, mitochondria associate closely with germ plasm constituents known as polar granules (Mahowald, 1968).…”

Section: Introductionmentioning

confidence: 99%

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A Balbiani body and the fusome mediate mitochondrial inheritance duringDrosophilaoogenesis

2003

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Maternally inherited mitochondria and other cytoplasmic organelles play essential roles supporting the development of early embryos and their germ cells. Using methods that resolve individual organelles, we studied the origin of oocyte and germ plasm-associated mitochondria during Drosophilaoogenesis. Mitochondria partition equally on the spindle during germline stem cell and cystocyte divisions. Subsequently, a fraction of cyst mitochondria and Golgi vesicles associates with the fusome, moves through the ring canals,and enters the oocyte in a large mass that resembles the Balbiani bodies ofXenopus, humans and diverse other species. Some mRNAs, includingoskar RNA, specifically associate with the oocyte fusome and a region of the Balbiani body prior to becoming localized. Balbiani body development requires an intact fusome and microtubule cytoskeleton as it is blocked by mutations in hu-li tai shao, while egalitarian mutant follicles accumulate a large mitochondrial aggregate in all 16 cyst cells. Initially, the Balbiani body supplies virtually all the mitochondria of the oocyte, including those used to form germ plasm, because the oocyte ring canals specifically block inward mitochondrial transport until the time of nurse cell dumping. Our findings reveal new similarities between oogenesis inDrosophila and vertebrates, and support our hypothesis that developing oocytes contain specific mechanisms to ensure that germ plasm is endowed with highly functional organelles.

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Section: Balbiani Bodies Are Associated With Localized Rnas and Proteinsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

A Balbiani body and the fusome mediate mitochondrial inheritance duringDrosophilaoogenesis

2003

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“…Where studied, the proteins and RNAs localised to these aggregates are products of germ cell-specific genes that are often conserved across divergent phyla (e.g. Bradley et al, 2001). The dynamics of organelle movement during the assembly of these aggregates also shows striking similarity between different animals (Carré et al, 2002;Heasman et al, 1984;Holland and Holland, 1992).…”

Section: Evolutionary Origin Of Germ Cellsmentioning

confidence: 99%

Mechanisms of germ cell specification across the metazoans: epigenesis and preformation

Extavour¹,

Akam²

2003

Development

730

751

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Germ cells play a unique role in gamete production, heredity and evolution. Therefore, to understand the mechanisms that specify germ cells is a central challenge in developmental and evolutionary biology. Data from model organisms show that germ cells can be specified either by maternally inherited determinants (preformation) or by inductive signals (epigenesis). Here we review existing data on 28 metazoan phyla, which indicate that although preformation is seen in most model organisms, it is actually the less prevalent mode of germ cell specification, and that epigenetic germ cell specification may be ancestral to the Metazoa.

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“…In panoistic ovary oocyte cells are supplied by the epithelial follicle cells, while in merostic ovary nutrition is supplied by both trophocyte and follicular cells [7,8]. Panoistic ovary are exist in stoneflies, fleas, apterygotes insects, grasshoppers, stoneflies, crickets, termites, dragonflies and some beetles [8,9], meroistic type are present in butterflies, moth, and flies [10].…”

Section: Introductionmentioning

confidence: 99%

Ovarian Development of House Fly (Musca domestica L.) (Diptera: Muscidae)

Xider

Amin

2018

KJAR

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Abstract:The ovarian development of Musca domestica, was examined under light microscope. There are two ovaries in the adult female of fly. Each ovary was formed of about 60-70 polytrophic ovarioles. The ovariole in cross sections organized in several circles. From cytological observations, ovary development and oogenesis could be divided in to 6 stages; ovaries with no noticeable follicle cells existing were characterized as (stage1), the follicle-growing stages considered as (stage2, 3), the vitellogenen in stages (stages4, 5(and mature egg stage (stage6). The oocyte initiated development at first stages of oogenesis; the nurse cells and follicle epithelial cells were considered to fulfill important functions with regard to the growth of the oocyte.

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Balbiani bodies in cricket oocytes: Development, ultrastructure, and presence of localized RNAs

Cited by 22 publications

References 32 publications

A Balbiani body and the fusome mediate mitochondrial inheritance duringDrosophilaoogenesis

A Balbiani body and the fusome mediate mitochondrial inheritance duringDrosophilaoogenesis

Mechanisms of germ cell specification across the metazoans: epigenesis and preformation

Ovarian Development of House Fly (Musca domestica L.) (Diptera: Muscidae)

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