Results 51 to 60 of about 62,775,292 (207)

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

NFYB Integrates Hormonal Signals into Tissue Allometry by Promoting Protein Biosynthesis

Advanced Science, Volume 13, Issue 46, 17 August 2026.
In the American cockroach, NFYB acts as a spatiotemporin that translates distinct hormonal cues into tissue‐specific allometry. Juvenile hormone activates NFYB in the early fat body, while 20‐hydroxyecdysone induces it in late wing pads. NFYB then promotes protein biosynthesis via core translational machinery, driving differential growth across the ...
Fangfang Liu, Shiming Zhu, Sishi Xia, Xiaoshuai Zhang, Qin Li, Zhanquan Zeng, Yuqing Liu, Wanyin Liang, Guanyu Zhou, Erxia Du, Suning Liu, Sheng Li   +11 more
wiley   +1 more source

Lippia umbellata Cav.: Chemical Composition, Insecticidal, and Antimicrobial Activities

Chemistry &Biodiversity, Volume 23, Issue 8, August 2026.
Hexane extracts of Lippia umbellata leaves and flowers contain lupenone, α‐amyrin, and hentriacontane. They exhibit insecticidal activity against Drosophila melanogaster and inhibit AChE in vitro and in silico. Furthermore, the extracts can inhibit the growth of medically important bacteria and yeasts, including multidrug‐resistant strains.
José Guillermo Avila‐Acevedo, Miriam Arlette López‐Pérez, Ana Karen Villagómez‐Guzmán, Edgar Antonio Estrella‐Parra, Nallely Álvarez‐Santos, Israel Valencia‐Quiroz, Julieta Orozco‐Martínez, Ma. Edith López‐Villafranco, Silvia Aguilar‐Rodríguez, Carlos Leonardo Céspedes‐Acuña, Juio Alarcón‐Enos, Ana María García‐Bores   +11 more
wiley   +1 more source

Autophagy Plays a Suppressive Role in Bladder Tumor Formation in an Orthotopic Mouse Model and Bladder Cancer Patient Specimens

The Kaohsiung Journal of Medical Sciences, Volume 42, Issue 8, August 2026.
ABSTRACT Autophagy plays either a suppressing or promoting role during tumor development. Clarifying the role of autophagy in bladder tumorigenesis both in vitro and in vivo is crucial for developing novel therapeutic strategies through manipulating autophagy activity.
Wan‐Ting Kuo, Chin‐Chen Pan, Yi‐Wen Liu, Nan‐Haw Chow, Hong‐Lin Cheng, Shan‐Ying Wu, Sheng‐Hui Lan, Chih‐Peng Chang, Hsiao‐Sheng Liu   +8 more
wiley   +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

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

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

Phytochemical and biological activities of Silene viridiflora extractives. Development and validation of a HPTLC method for quantification of 20-hydroxyecdysone [PDF]

, 2019
Silene viridifiora (Caryophyllaceae) has adaptogen, tonic, actoprotector and immunomodulator properties that are mainly attributed to ecdysteroids. The aim of the present study is to investigate the chemical constituents of essential oil as well as the ...
Gokhan Zengin, Stefan Böhmdorfer, Potthast, Antje, Rosenau, Thomas, Nilufar Z. Mamadalieva, Mamadalieva, Nilufar Z., Akramov, Davlat Kh., Janibekov, Abdulaziz, Markus Bacher, Antje Potthast, Davlat Kh. Akramov, Thomas Rosenau, Zengin, Gökhan, Abdulaziz Janibekov, Boehmdorfer, Stefan, Bacher, Markus   +15 more
core   +1 more source