Results 91 to 100 of about 49,023 (222)

DsiRNA‐mediated silencing of Ceratitis capitata transformer or transformer‐2 leads to masculinization of XX embryos and systemic gene silencing in ovaries

Insect Science, EarlyView.
We carried out functional studies using Dicer‐substrate small interfering RNAs (DsiRNAs), targeting the sex determination genes Cctransformer (Cctra) and Cctransformer‐2 (Cctra‐2) in the Mediterranean fruit fly (Ceratitis capitata). Microinjection of DsiRNAs into XX embryos (0‐1 h old) rapidly triggered the expression of male‐specific Cctra isoforms ...
Gennaro Volpe, Sarah Maria Mazzucchiello, Domenico De Falco, David Torrente, Stefania Liguori, Noemi Rosati, Dora Baccaro, Michela Mazzeo, Fulvio Bertolotto, Harshini Sangle, Ennio Giordano, Angela Carfora, Francesca Lucibelli, Marianna Varone, Paola Di Lillo, Hugo Diego Perdomo, Mariangela Bonizzoni, Serena Aceto, Marco Salvemini, Molly Duman‐Scheel, Giuseppe Saccone   +20 more
wiley   +1 more source

Effect of population density on the development of Mesovelia furcata (Mesoveliidae), Microvelia reticulata and Velia caprai (Veliidae) (Heteroptera: Gerromorpha)

European Journal of Entomology, 2010
Population density during nymphal development affects body size, developmental rate and wing polymorphism in semiaquatic bugs. Nymphs from crowded habitats grow faster and thus gain an advantage in the later stadia.
Tomáš DITRICH, Miroslav PAPÁČEK
doaj   +1 more source

Lack of involvement of known DNA methyltransferases in familial hydatidiform mole implies the involvement of other factors in establishment of imprinting in the human female germline [PDF]

, 2003
BACKGROUND: Differential methylation of the two alleles is a hallmark of imprinted genes. Correspondingly, loss of DNA methyltransferase function results in aberrant imprinting and abnormal post-fertilization development.
Bonthron, D.T., De Vos, M., Hayward, B. E., Hodge, D., Huntriss, J., Judson, H., Picton, H.M., Sheridan, E.   +7 more
core   +3 more sources

Calcitonin‐like diuretic hormone influences reproduction in adult female Rhodnius prolixus

Insect Science, EarlyView.
Highlights • CT/DH‐like immunoreactivity is present in female reproductive tissues • CT/DH receptor transcripts are expressed in the fat body and ovaries • RNAi knockdown of CT/DH receptors reduces egg number and hatching rate • Rhopr‐CT/DH increases RhoprVg1 and RhoprVgR expression in ovaries in vitro • Rhopr‐CT/DH stimulates oviduct contractions in a
Areej N. Al‐Dailami, Ian Orchard, Angela B. Lange   +2 more
wiley   +1 more source

Reproductive biology of the Antarctic “sea pen” Malacobelemnon daytoni (Octocorallia, Pennatulacea, Kophobelemnidae)

Polar Research, 2013
The reproductive biology of the sea pen Malacobelemnon daytoni was studied at Potter Cove, South Shetland Islands, where it is one of the dominant species in shallow waters. Specimens collected at 15–22 m depth were examined by histological analysis.
Ricardo Sahade, Natalia Servetto, Luciana Torre   +2 more
doaj   +1 more source

piRNAs and Aubergine cooperate with Wispy poly(A) polymerase to stabilize mRNAs in the germ plasm [PDF]

, 2017
Piwi-interacting RNAs (piRNAs) and PIWI proteins play a crucial role in germ cells by repressing transposable elements and regulating gene expression. In Drosophila, maternal piRNAs are loaded into the embryo mostly bound to the PIWI protein Aubergine ...
Beilharz, Traude H., Bontonou, Gwénaëlle, Chartier, Aymeric, Dufourt, Jérémy, Harrison, Paul F., Jahan, Camille, Meunier, Anne Cecile, Papin, Catherine, Pierson, Stéphanie, Simonelig, Martine   +9 more
core   +4 more sources

LsFAMeT and LsJHAMT coordinate JH biosynthesis to regulate fecundity in Laodelphax striatellus

Insect Science, EarlyView.
The small brown planthopper (SBPH), Laodelphax striatellus, can trigger large‐scale outbreaks when encountering suitable habitats during migration due to their strong reproductive ability. This study investigated the role of juvenile hormone (JH) in regulating SBPH reproduction.
Yan Guo, Bing‐Bing Shi, Xue‐Qi Zhang, Qiong Yang   +3 more
wiley   +1 more source

Rearing conditions and life history influence the progress of gametogenesis and reproduction performances in pikeperch males and females

Animal, 2018
Pikeperch (Sander lucioperca) is a highly valuable fish in Europe. However, development of aquaculture of pikeperch is highly limited due to seasonality of production. This can be overcome by the controlled reproduction of domesticated fish.
A. Khendek, A. Chakraborty, J. Roche, Y. Ledoré, A. Personne, T. Policar, D. Żarski, R. Mandiki, P. Kestemont, S. Milla, P. Fontaine   +10 more
doaj   +1 more source

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

BOLL‐Containing Aggregates Mediate the Translational Regulation During Human Oogenesis

Cell Proliferation, EarlyView.
This work elucidates that BOLL‐containing aggregate‐mediated translational control is essential for human oogenesis. These aggregates recruit PABPC1 and FXR1 to activate the translation of U‐rich mRNAs encoding cell cycle proteins, thereby ensuring successful meiotic progression.
Ying Li, Lingya Mao, Boyuan Liang, Longxin Xie, Wenpei Xiang, Kehkooi Kee   +5 more
wiley   +1 more source