Results 61 to 70 of about 10,510 (219)

Defecation in preparation for ecdysis drives microplastic clearance in cricket nymphs

open access: yesPhysiological Entomology, EarlyView.
In preparation for ecdysis, cricket nymphs cease feeding and gradually clear their gut contents via frass production, which removes most ingested MPs from their digestive tract. Following exoskeletal moulting, the foregut lining, including any remaining MPs, is shed and excreted alongside frass approximately 6 h later.
Jennie E. Mills   +3 more
wiley   +1 more source

Impact of steroid hormone signals on Drosophila cell cycle during development

open access: yesCell Division, 2009
Metamorphosis of Drosophila involves proliferation, differentiation and death of larval tissues in order to form the adult fly. The major steroid hormone implicated in the larval-pupal transition and adult tissue modelling is ecdysone.
Quinn Leonie, Cranna Nicola
doaj   +1 more source

Unexpected role of the steroid-deficiency protein ecdysoneless in pre-mRNA splicing. [PDF]

open access: yesPLoS Genetics, 2014
The steroid hormone ecdysone coordinates insect growth and development, directing the major postembryonic transition of forms, metamorphosis. The steroid-deficient ecdysoneless1 (ecd1) strain of Drosophila melanogaster has long served to assess the ...
Ann-Katrin Claudius   +4 more
doaj   +1 more source

Functional investigations of the Ecdysone Receptor and production of ecdysone in the salmon louse (Lepeophtheirus salmonis) [PDF]

open access: yes, 2016
The salmon louse Lepeophtheirus salmonis is a marine ectoparasitic copepod naturally infecting salmonid fishes in the Northern hemisphere. At present, salmon louse infections are the most severe disease problem in the salmon farming industry causing ...
Sandlund, Liv
core  

Extracellular matrix induced by steroids and aging through a G-protein-coupled receptor in a Drosophila model of renal fibrosis

open access: yesDisease Models & Mechanisms, 2020
Aldosterone is produced by the mammalian adrenal cortex to modulate blood pressure and fluid balance; however, excessive, prolonged aldosterone promotes fibrosis and kidney failure.
Wenjing Zheng, Karen Ocorr, Marc Tatar
doaj   +1 more source

Function and Evolution of Nuclear Receptors in Environmental-Dependent Postembryonic Development

open access: yesFrontiers in Cell and Developmental Biology, 2021
Nuclear receptors (NRs) fulfill key roles in the coordination of postembryonal developmental transitions in animal species. They control the metamorphosis and sexual maturation in virtually all animals and by that the two main environmental-dependent ...
Jan Taubenheim   +2 more
doaj   +1 more source

Ecdysone Oxidase: Reaction and Specificity [PDF]

open access: yesEuropean Journal of Biochemistry, 1978
Ecdysone oxidase oxidizes 3‐hydroxysteroids of the ecdysteroid type irreversibly to 3‐dehydro derivatives. The hydrogen of the steroid is transferred by the enzyme to oxygen which is reduced to hydrogen peroxide. Ecdysone oxidase is relatively specific for ecdysone and ecdysterone. Apparent Michaelis constants for these two physiological substrates are
J, Koolman, P, Karlson
openaire   +2 more sources

RNA interference in crop protection: opportunities and challenges during the transition to commercialization

open access: yesPest Management Science, Volume 82, Issue 7, Page 5971-5986, July 2026.
RNA interference (RNAi) technologies, host‐induced gene silencing (HIGS) and spray‐induced gene silencing (SIGS), potentially offer sustainable crop protection. However, efficacy, costs, regulatory clarity, and socio‐environmental impacts require further evaluation for broader use.
Elisabetta Sergi   +12 more
wiley   +1 more source

Ecdysone controlled cell and tissue deletion

open access: yes, 2020
Link to a related website: https://www.nature.com/articles/s41418-019-0456-9.pdf, Open Access via UnpaywallThe removal of superfluous and unwanted cells is a critical part of animal development.
Jiang, X.   +7 more
core   +1 more source

Role of Broad-Complex (Br) and Krüppel homolog 1 (Kr-h1) in the Ovary Development of Nilaparvata lugens

open access: yesFrontiers in Physiology, 2017
Ovarian development plays an important role in the life history of insects and is crucial for control of the insect population. The metamorphosis of an insect is precisely regulated by the interaction of the juvenile hormone and ecdysone.
Jianru Jiang, Yili Xu, Xinda Lin
doaj   +1 more source

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