Results 41 to 50 of about 78,928 (170)

Biotransformation of monoterpenols upon pre‐treatment with oregano essential oil vapour alleviates downy mildew susceptibility in grapevine leaves

Plant Biology, EarlyView.
Pre‐treatment of grapevine plants with oregano essential oil vapour alleviates downy mildew susceptibility by accumulation of monoterpenol glycosides. Abstract Grapevine downy mildew, caused by the oomycete Plasmopara viticola, is a destructive disease that causes major economic losses as most elite grapevine cultivars are susceptible to this pathogen.
J. R. P. E. Mars, R. M. de Graaf, R. S. Jansen, S. Coolen, P. H. J. Kouwer, J. L. Peters, R. A. Anaia   +6 more
wiley   +1 more source

Molecular evolution of terpene synthase underlying the diversification of isoprene emission in Fagaceae

Plant Biology, Volume 28, Issue 5, Page 1315-1329, August 2026.
Isoprene emission in oaks originated from convergent adaptive evolution of terpene synthases, involving a substrate shift from monoterpene to isoprene production within a Fagaceae‐specific TPS lineage. Abstract Plants emit a wide range of volatile organic compounds, among which isoprene is the most abundant and atmospherically influential. Although oak
Y. Ikezaki, S. Koita, S. N. Kudo, T. Nakata, R. Munakata, K. Yazaki, T. Torimaru, N. Tomaru, S. Isobe, H. Hirakawa, J. Kusumi, A. Satake   +11 more
wiley   +1 more source

Alkali‐Metal Base Catalyzed Electrocyclization of Isoprene Derivatives

Chemistry – A European Journal, Volume 32, Issue 27, 17 July 2026.
Simple and abundant alkali‐metal base catalysis in combination with Lewis basic polyamines enables the electrocyclization of isoprene‐derived trienes to cycloheptadienes under neat conditions. Mechanistic insight supported by DFT guides a scalable route to seven‐membered carbocycles which, after reduction, give saturated cycloalkanes relevant as ...
Mikaël Le Roch, Krzysztof Piech, Aurélien Crochet, Andreu Tortajada   +3 more
wiley   +1 more source

Research on the Mechanism of Natural Products Acting on Chronic Obstructive Pulmonary Disease

Food Science &Nutrition, Volume 14, Issue 7, July 2026.
This figure illustrates that approximately 80 natural compounds exert therapeutic effects against chronic obstructive pulmonary disease by targeting pathological mechanisms such as airway inflammation, oxidative stress, airway remodeling, mucus hypersecretion, emphysema, protease–antiprotease imbalance, apoptosis, and autophagy.
Shuna Wei, Xiaoju Liu
wiley   +1 more source

Comparative Evaluation of Antimicrobial Activity and Composition of Rose Oils from Various Geographic Origins, in Particular Bulgarian Rose Oil

Natural Product Communications, 2008
In the present study we evaluated the composition and antimicrobial activity of various rose oils from Bulgaria, Turkey, Morocco, Iran and China against three Gram-positive, three Gram-negative bacteria and two yeasts.
Velizar Gochev, Katrin Wlcek, Gerhard Buchbauer, Albena Stoyanova, Anna Dobreva, Erich Schmidt, Leopold Jirovetz   +6 more
doaj   +1 more source

From Citrus to Cymene: Understanding the Hydrothermal Conversion of Limonene

ChemSusChem, Volume 19, Issue 11, 15 June 2026.
When life gives you limonene… Hydrothermal conversion and pyrolysis of limonene give two distinct sets of products, arising from differing reaction cascades. While p‐cymene dominates in the presence of water, indicative of an isomerisation/aromatisation pathway, pyrolysis favours cracking and loss of carbon affording an m‐xylene rich aromatic mix.
Jack Steel, Alexander K. L. Yuen, Alejandro Montoya, Christopher Barnett, Anthony F. Masters, Thomas Maschmeyer   +5 more
wiley   +1 more source

Changes in volatile organic compounds (VOCs) content in resistant and non-resistant forest trees in response to bark beetle attack

Journal of Forest Science
The response of forest trees to bark beetle attack involves substantial changes in terpene content, which varies between resistant and non-resistant species.
Petr Soudek, Jan Rezek, Kateřina Moťková, Šárka Petrová, Pavlína Máchová, Adam Véle, Martin Fulín, Petr Hošek   +7 more
doaj   +1 more source

Thionation of Essential Oils from Algerian Artemisia Herba-alba L. and Ruta Montana L.: Impact on their Antimicrobial and Insecticidal Activities

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2017
Essential oils were extracted from Artemisia herba-alba L. and Ruta montana L. by means of steam distillation and thionated with a reagent combination of phosphorus pentasulfide and sodium bicarbonate.
Nassiba Fekhar, Hocine Boutoumi, Mohamed Krea, Saâd Moulay, Drioueche Asma, Zoubir Benmaamar   +5 more
doaj   +1 more source

Elucidation of the myrcene ozonolysis mechanism from a Criegee Chemistry perspective [PDF]

Atmospheric Chemistry and Physics
Criegee intermediates (CIs) are highly reactive species generated during the alkene ozonolysis, which play a critical role in atmospheric chemistry. Myrcene is a typical monoterpene, and its linear structure is significantly different from other cyclic ...
M. Chen, M. Chen, S. Tong, S. Yu, X. Lv, X. Lv, Y. Xu, Y. Xu, H. Zhang, M. Ge, M. Ge   +10 more
doaj   +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