The ovary structure and oogenesis in the basal crustaceans and hexapods. Possible phylogenetic significance

Jaglarz, Mariusz K.; Kubrakiewicz, Janusz; Biliński, S

doi:10.1016/j.asd.2014.05.003

Cited by 16 publications

(7 citation statements)

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“…This implies that all the mitochondria of a given egg are recruited from a single oogonial cell. Meroistic ovaries have been found in rotifers, annelids, lower crustaceans, advanced (holometabolous) insects and certain lizards [9,[12][13][14]. Here the oocytes develop within syncytial clones (clusters) of sibling germline cells.…”

Section: Categories (Types) Of Animal Ovariesmentioning

confidence: 99%

Transmission of Functional, Wild-Type Mitochondria and the Fittest mtDNA to the Next Generation: Bottleneck Phenomenon, Balbiani Body, and Mitophagy

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Biliński

2020

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The most important role of mitochondria is to supply cells with metabolic energy in the form of adenosine triphosphate (ATP). As synthesis of ATP molecules is accompanied by the generation of reactive oxygen species (ROS), mitochondrial DNA (mtDNA) is highly vulnerable to impairment and, consequently, accumulation of deleterious mutations. In most animals, mitochondria are transmitted to the next generation maternally, i.e., exclusively from female germline cells (oocytes and eggs). It has been suggested, in this context, that a specialized mechanism must operate in the developing oocytes enabling escape from the impairment and subsequent transmission of accurate (devoid of mutations) mtDNA from one generation to the next. Literature survey suggest that two distinct and irreplaceable pathways of mitochondria transmission may be operational in various animal lineages. In some taxa, the mitochondria are apparently selected: functional mitochondria with high inner membrane potential are transferred to the cells of the embryo, whereas those with low membrane potential (overloaded with mutations in mtDNA) are eliminated by mitophagy. In other species, the respiratory activity of germline mitochondria is suppressed and ROS production alleviated leading to the same final effect, i.e., transmission of undamaged mitochondria to offspring, via an entirely different route.

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Section: Categories (Types) Of Animal Ovariesmentioning

confidence: 99%

Transmission of Functional, Wild-Type Mitochondria and the Fittest mtDNA to the Next Generation: Bottleneck Phenomenon, Balbiani Body, and Mitophagy

Tworzydło

Sekuła

Biliński

2020

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“…Furthermore, the female ovaries are located dorsally with the gonopore located in the sixth segment (thorax), which are oval and paired. An epithelial membrane resembling a pearl necklace forms the ovaries and on which follicular cells, developing follicles and developing oocytes are anchored, (Shyamasundari et al, 1987;Wilson, 1991;Jaglarz et al, 2014). Ovigerous females, carried at least two generations of oocytes at different stages, i.e.…”

Section: Discussionmentioning

confidence: 99%

Gonadal histology of Erichsonella attenuata (Isopoda: Valvifera: Idoteidae)

2020

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Background: Isopods are highly diverse organisms, however, despite of their abundance and importance in ecological dynamics have been neglected in many of the aspects of their biology. Objectives: This paper analyses E. attenuata male and female histological characteristics, especially the reproductive structures, to increase the information of the reproductive biology and help to understand the sexual characteristics of other free-living isopods to favour comparative studies with other groups and environmental conditions. Methods: Organisms sampled between July 2010 and August 2011 were fixed and processed for histological preparations; Haematoxylin-Eosin and Lendrum staining techniques were applied to differentiate structures. Microphotographies were taken and analysed. Results: The internal organography was found to be similar on both sexes. The ovaries are modified during the maturation of the oocytes, after spawning, embryos are born in the marsupium. In some cases, a cohort in initial stages of maturation is observed in the dorsal region of the body in addition of the ones seen in the marsupium. A couple of testicles, comprising three cysts and in which different cell stages of spermatogenesis can be found, are observed in males. Conclusions: Since maturation of gametes occurs during the whole year, it is concluded that E. attenuata has a continuous reproductive cycle. We describe for the first time the reproductive characteristics of this isopod, which is important as reproductive aspects of these crustaceans have been neglected, thus, it is necessary to update and extend the morphological and histological information.

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Section: The Diversity Of Germline Cell Lineage Treesmentioning

confidence: 99%

“…royalsocietypublishing.org/journal/rsfs Interface Focus 12: 20210082 polytrophic meroistic ovaries [39,[67][68][69][70][71]. In such ovaries, oocytes are connected to support cells through ICBs and develop alongside these support cells in a single cluster (figure 1b) [39,[67][68][69][70][71]. These contrast with telotrophic meroistic ovaries, where there is a single cluster of support cells that is restricted to the germarium, and is connected to numerous oocytes developing along the ovariole through nutritive chords rather than through ICBs [39].…”

Section: The Diversity Of Germline Cell Lineage Treesmentioning

confidence: 99%

Quantitative models for building and growing fated small cell networks

et al. 2022

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Small cell clusters exhibit numerous phenomena typically associated with complex systems, such as division of labour and programmed cell death. A conserved class of such clusters occurs during oogenesis in the form of germline cysts that give rise to oocytes. Germline cysts form through cell divisions with incomplete cytokinesis, leaving cells intimately connected through intercellular bridges that facilitate cyst generation, cell fate determination and collective growth dynamics. Using the well-characterized Drosophila melanogaster female germline cyst as a foundation, we present mathematical models rooted in the dynamics of cell cycle proteins and their interactions to explain the generation of germline cell lineage trees (CLTs) and highlight the diversity of observed CLT sizes and topologies across species. We analyse competing models of symmetry breaking in CLTs to rationalize the observed dynamics and robustness of oocyte fate specification, and highlight remaining gaps in knowledge. We also explore how CLT topology affects cell cycle dynamics and synchronization and highlight mechanisms of intercellular coupling that underlie the observed collective growth patterns during oogenesis. Throughout, we point to similarities across organisms that warrant further investigation and comment on the extent to which experimental and theoretical findings made in model systems extend to other species.

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The ovary structure and oogenesis in the basal crustaceans and hexapods. Possible phylogenetic significance

Cited by 16 publications

References 95 publications

Transmission of Functional, Wild-Type Mitochondria and the Fittest mtDNA to the Next Generation: Bottleneck Phenomenon, Balbiani Body, and Mitophagy

Transmission of Functional, Wild-Type Mitochondria and the Fittest mtDNA to the Next Generation: Bottleneck Phenomenon, Balbiani Body, and Mitophagy

Gonadal histology of Erichsonella attenuata (Isopoda: Valvifera: Idoteidae)

Quantitative models for building and growing fated small cell networks

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