Results 101 to 110 of about 54,152 (260)

Identification of New Regulators of the Oocyte-to-Embryo Transition in Drosophila

G3: Genes, Genomes, Genetics, 2020
At the oocyte-to-embryo transition the highly differentiated oocyte arrested in meiosis becomes a totipotent embryo capable of embryogenesis. Oocyte maturation (release of the prophase I primary arrest) and egg activation (release from the secondary ...
Emir E. Avilés-Pagán, Albert S. W. Kang, Terry L. Orr-Weaver   +2 more
doaj   +1 more source

Transcription Factor TCF12‐Mediated Maternal Gene Expressions in Mouse Oocyte Are Prerequisites of Successful Fertilisation and Zygotic Genome Activation

Cell Proliferation, EarlyView.
Maternal TCF12 ensures the competence of fertilisation by controlling the expression of Astl and the proper location of cortical granules. Furthermore, maternal TCF12 maintains the phosphatase activity of PP2A by regulating the expression of Arpp19. Oocyte‐specific deletion of Tcf12 leads to fertilisation defects as well as ZGA failure at the 2‐cell ...
Lan‐Rui Cao, Chi Zhang, Zuo‐Qi Deng, Yue‐xin Qiu, Zhao Zhang, Heng‐Yu Fan, Jing Li, Hong‐Bo Wu   +7 more
wiley   +1 more source

Protein content and electrophoretic profile of fat body and ovary extracts from workers of Melipona quadrifasciata anthidioides (Hymenoptera, Meliponini)

Iheringia: Série Zoologia, 2004
Workers of Melipona quadrifasciata anthidioides (Lepeletier, 1836) develop their ovaries and lay eggs, therefore the production of vitellogenin is expected.
Vagner T. Paes de Oliveira, Carminda da Cruz-Landim   +1 more
doaj   +1 more source

Gonadulin and Insulin‐Like Growth Factor Involved in Rhipicephalus microplus Reproduction

Entomologia Experimentalis et Applicata, EarlyView.
Insulin‐like growth factor (IGF2) in ovaries of Rhipicephalus microplus partially engorged females. Ovaries from females at different feeding stages were used to detect IGF2. ABSTRACT Gonadulin and insulin‐like growth factor (IGF) are neuropeptides synthesized by the central nervous system (CNS) of arthropods.
Jéssica Waldman, Lucas Teixeira de Castro, Vinícius Andrade‐Silva, Jéssica Andrade Paes, Luís Fernando Parizi, Maria Aparecida Juliano, Saulo Petinatti Pavarini, David Driemeier, Itabajara da Silva Vaz Jr.   +8 more
wiley   +1 more source

Drosophila oogenesis [PDF]

Current Biology, 2008
Bastock, Rebecca, St Johnston, Daniel
openaire   +2 more sources

Reduced Fecundity Associated with Wolbachia Infection in a Neotropical Drosophilid Redução da fecundidade associada à infecção por Wolbachia em um Drosofilídeo Neotropical

Ecological Entomology, EarlyView.
Using multiple infected and uninfected Drosophila sturtevanti lines, we investigated (i) the impact of Wolbachia on fecundity and (ii) its effects relative to antibiotic treatment. Based on over 1680 dissected ovaries, fecundity was similar between infected and uninfected flies.
Letícia Carlesso de Paula Sena, Marina Magalhães Moreira, Luísa de Paula Bouzada Dias, Jhonny José Magalhães Guedes, Karla Suemy Clemente Yotoko   +4 more
wiley   +1 more source

Developmental expression of Ap‐Vas proteins in aphids and flies reveals their evolutionary roles in insects

Insect Molecular Biology, EarlyView.
Duplication of vas genes is universally observed in aphids, and phylogenetic analysis indicates that this event predates the divergence of Aphididae and Phylloxeridae. Ap‐vas1 is germline‐specific, whereas Ap‐vas2–4 exhibit somatic expression, indicating functional divergence during aphid embryogenesis.
Gee‐Way Lin, Szu‐Chieh Wang, Charles E. Cook, Ming‐Der Lin, Chun‐che Chang   +4 more
wiley   +1 more source

Asymmetric Divisions in Oogenesis

, 2017
In the majority of animals, the oocyte/egg is structurally, molecularly, and functionally asymmetric. Such asymmetry is a prerequisite for a flawless fertilization and faithful segregation of maternal determinants during subsequent embryonic development.
Bilinski, Szczepan M., Kubiak, Jacek Z., Kloc, Malgorzata   +2 more
openaire   +3 more sources

Oogenesis [PDF]

Journal of Medical Genetics, 1973
Richard B. Imberski, John D. Biggers, Allen W. Scheutz   +2 more
openaire   +2 more sources

Drosophila Cappuccino alleles provide insight into formin mechanism and role in oogenesis. [PDF]

, 2015
During Drosophila development, the formin actin nucleator Cappuccino (Capu) helps build a cytoplasmic actin mesh throughout the oocyte. Loss of Capu leads to female sterility, presumably because polarity determinants fail to localize properly in the ...
Bor, Batbileg, Quinlan, Margot E, Roth-Johnson, Elizabeth A, Yoo, Haneul   +3 more
core   +1 more source