an immature female germ cell forming oocytes by repeated divisions
2.
a female sex organ of some algae and fungi producing female gametes (oospheres)
Derived forms
oogonial (ooˈgonial)
adjective
Examples of 'oogonia' in a sentence
oogonia
Oogonia and antheridia are especially susceptible to the reduction of the light period.
Janusz Maszewski 2014, 'The effect of light factor on the development of thallus and generative organs inChara vulgaris L.', Acta Societatis Botanicorum Poloniaehttps://pbsociety.org.pl/journals/index.php/asbp/article/view/3357. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It also produces both ornamented and relatively smooth-walled oogonia.
Xiao Yang, Patricia A. Richardson, Chuanxue Hong 2014, 'Phytophthora ×stagnum nothosp. nov., a New Hybrid from Irrigation Reservoirs at OrnamentalPlant Nurseries in Virginia', PLoS ONE10.1371/journal.pone.0103450. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Vegetative cells, oogonia and antheridia were observed, which allowed taxonomic identification.
Marta Pikosz, Beata Messyasz 2015, 'New data on distribution, morphology and ecology of Oedogonium capillare Kützing exHirn (Oedogoniales, Chlorophyta) in Poland', Biodiversity: Research and Conservationhttp://www.degruyter.com/view/j/biorc.2015.40.issue-1/biorc-2015-0032/biorc-2015-0032.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Oocyte maturation takes place in four stages: oogonia, primary oocytes, developing oocytes, and mature oocytes.
Greani Samuel, Quilichini Yann, Marchand Bernard 2016, 'Ultrastructural study of vitellogenesis and oogenesis of Crepidostomum metoecus (Digenea,Allocreadiidae), intestinal parasite of Salmo trutta (Pisces, Teleostei)', Parasitehttp://dx.doi.org/10.1051/parasite/2016057. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The ovary contained oocytes at differential stages of development including oogonia and the previtellogenic stage.
Piyakorn Boonyoung, Sinlapachai Senarat, Jes Kettratad 2016, 'Histological organization of the female queen Devario regina (Fowler, 1934) duringits juvenile stage', Songklanakarin Journal of Science and Technology (SJST)http://rdo.psu.ac.th/sjstweb/journal/38-1/38-1-9.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
As opposed to female oogonia, the male germ cells undergo hundreds of cell divisions during the fertile years.
Tapio Nevalainen, Laura Kananen, Saara Marttila, Juulia Jylhävä, Marja Jylhä, AnttiHervonen, Mikko Hurme 2016, 'Increased Paternal Age at Conception Is Associated with Transcriptomic Changes Involvedin Mitochondrial Function in Elderly Individuals', PLOS ONE10.1371/journal.pone.0167028. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The isolates were homothallic and produced spherical oogonia with smooth walls and paragynous, rarely amphigynous, spherical to ovoid antheridia.
Zahra MIRSOLEIMANI, Reza MOSTOWFIZADEH-GHALAMFARSA 2014, 'Characterization of Phytophthora pistaciae, the causal agent of pistachiogummosis, based on host range, morphology, and ribosomal genome', Phytopathologia Mediterraneahttp://www.fupress.net/index.php/pm/article/view/11549. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The oogonia are attached to a parental hypha by a short truncated stalk with a single septum.
Ben J Slater, Stephen McLoughlin, Jason Hilton 2013, 'Peronosporomycetes (Oomycota) from a Middle Permian permineralised peat within theBainmedart Coal Measures, Prince Charles Mountains, Antarctica.', PLoS ONEhttp://europepmc.org/articles/PMC3732221?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Our observations are discussed in terms of changing morphogenetic preferences for antheridia and oogonia within the life-span of a plant.
Maria Kwiatkowska, Agnieszka Pala, Janusz Maszewski 2014, 'Size-variation in the antheridia and oogonia of Chara vulgaris under different experimentalconditions', Acta Societatis Botanicorum Poloniaehttps://pbsociety.org.pl/journals/index.php/asbp/article/view/856. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)