Results 61 to 70 of about 7,001,792 (210)

Host plant pubescence: Effect on silverleaf whitefly, Bemisia argentifolii, fourth instar and pharate adult dimensions and ecdysteroid titer fluctuations

Journal of Insect Science, 2003
The ability to generate physiologically synchronous groups of insects is vital to the performance of investigations designed to test insect responses to intrinsic and extrinsic stimuli. During a given instar, the silverleaf whitefly, Bemisia argentifolii,
Dale B. Gelman, Dan Gerling
doaj  

E- and Z-Isomers of New Phytoecdysteroid Conjugates from French Polynesian Microsorum membranifolium (Polypodiaceae) Fronds

Molecules, 2012
Phytochemical investigation of the fronds of Microsorum membranifolium resulted in the isolation of a new phytoecdysteroid, E-2-deoxy-20-hydroxyecdysone 3-[4-(1-b-D-glucopyranosyl)]-caffeate (1), together with two known phytoecdysteroids, E-2-deoxy-20 ...
René Lafont, Raimana Ho, Phila Raharivelomanana, Jean-Pierre Girault   +3 more
doaj   +1 more source

Green Synthesis of Silver Nanoparticles Using Root Extract of Gomphrena vaga Mart.: Metabolomic Insights Into Nanoparticle Formation and Antimicrobial Activity

Nano Select, Volume 7, Issue 8, August 2026.
This study presents the green synthesis of ultrasmall silver nanoparticles using Gomphrena vaga Mart. root extract. The nanoparticles synthesized were stable and showed good broad‐spectrum antibacterial activity against Gram‐positive and Gram‐negative bacteria in initial studies.
Uedson da Silva das Neves, Thyerre Santana da Costa, Symone Costa de Castro, Maelson Cardoso Lacerda, Mauro Alves Bueno, Ljubica Tasic   +5 more
wiley   +1 more source

Aphid alarm pheromone (E)‐β‐farnesene: mechanisms, applications, and challenges in pest management

New Plant Protection, Volume 3, Issue 2, June 2026.
This review highlights the advances in the application of the aphid alarm pheromone (E)‐β‐farnesene (EβF) for pest management. It focuses on smart delivery systems, molecular optimization, synthetic biology, and integration with digital agriculture. Additionally, it discusses key challenges and future directions for enhancing stability, field efficacy,
Yi Yan, Yunhui Zhang, Xuguo Zhou, Xiangrui Li   +3 more
wiley   +1 more source

Combined Use of Deep Eutectic Solvents, Macroporous Resins, and Preparative Liquid Chromatography for the Isolation and Purification of Flavonoids and 20-Hydroxyecdysone from Chenopodium quinoa Willd

Biomolecules, 2019
Deep eutectic solvents (DESs) were used in combination with macroporous resins to isolate and purify flavonoids and 20-hydroxyecdysone from Chenopodium quinoa Willd by preparative high-performance liquid chromatography (HPLC). The extraction performances
J. Zeng, Xian-chao Shang, P. Zhang, Hongwei Wang, Yanlong Gu, Jia-Neng Tan   +5 more
semanticscholar   +1 more source

From pollen provision to pollinator: Species‐specific sterol assimilation by wild bees in urban landscapes

Functional Ecology, Volume 40, Issue 6, Page 1906-1920, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang, Joan Casanelles‐Abella, Marco Moretti, Consuelo M. De Moraes, Mark C. Mescher, Pengjuan Zu   +5 more
wiley   +1 more source

Juvenile Hormone III but Not 20-Hydroxyecdysone Regulates the Embryonic Diapause of Aedes albopictus

Frontiers in Physiology, 2019
Diapause is an alternative developmental trajectory allowing insects to enter dormancy and persist through predictable periods of seasonally unfavorable conditions.
Zachary A. Batz, C. Brent, Molly R. Marias, J. Sugijanto, P. Armbruster   +4 more
semanticscholar   +1 more source

Heterokairic Genes and the Eco‐Evo‐Devo of Timing

Evolution &Development, Volume 28, Issue 2, June 2026.
Heterokairic genes as the bridge (Heterokairic Pathways?): Heterokairic genes are heterochronic regulators whose activity is modulated by environmental conditions. External cues (e.g., temperature, nutrition, oxygen, density: yellow box) are sensed (yellow arrows) and converted into endocrine and metabolic signals (purple box and arrow into fish's ...
Leandro Lofeu, Ehsan Pashay Ahi
wiley   +1 more source

Juvenile hormone and 20-hydroxyecdysone coordinately control the developmental timing of matrix metalloproteinase–induced fat body cell dissociation

Journal of Biological Chemistry, 2017
Tissue remodeling is a crucial process in animal development and disease progression. Coordinately controlled by the two main insect hormones, juvenile hormone (JH) and 20-hydroxyecdysone (20E), tissues are remodeled context-specifically during insect ...
Qiangqiang Jia, Suning Liu, Di Wen, Yong-jun Cheng, W. Bendena, Jian Wang, Sheng Li   +6 more
semanticscholar   +1 more source

From flower buds to bolls: how cotton reproductive structures shape boll weevil development, reproduction and survival

Pest Management Science, Volume 82, Issue 5, Page 4576-4584, May 2026.
Female boll weevils feeding on flower buds promote reproduction regardless of their immature diet, whereas boll feeding increases lipid reserves and lifespan, revealing a nutrition‐driven trade‐off that sustains survival and reproduction in tropical boll weevil populations.
Roberta Ramos Coelho, Guilherme Gomes Rolim, Franklin Magliano da Cunha, Valéria Wanderley‐Teixeira, José Dijair Antonino, Jorge Braz Torres   +5 more
wiley   +1 more source