Background: Mineral oils have been widely used in the pest control of several crops. However, their mode of action is poorly understood, especially in the case of their antifungal properties. The possible direct fungicidal activity and the stress-inducing capability of paraffin oil on grapevine were examined using Vitis vinifera L. cv 'Kékfrankos' cuttings and the fungus Erysiphe necator, the causal agent of powdery mildew.
Results: Our experiments demonstrated that paraffin oil does not have fungicide activity on E. necator, but induces significant stress-related changes in grapevine physiology. Elevated H O production and the accumulation of the phytohormone salicylic acid were measured. Secondary thickening of the cell wall by lignin deposition and the accumulation of phenolic compounds were also observed. Some enzyme activities related to the detoxification of reactive oxygen species, disease response, and the synthesis of lignin were changed in accordance with the determined changes in cell wall composition and H O levels.
Conclusion: The results suggest that paraffin oil induces stress responses on grapevine leaves through oxidative burst, and this response is systemized by salicylic acid. The accumulation of lignin and water-soluble phenolics may be directly responsible for the paraffin oil-induced resistance of grapevine against powdery mildew. © 2021 Society of Chemical Industry.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/ps.6492 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The shard test and nanoporomechanics reverse classical paradigm of cement hydration being contractive.
Proc Natl Acad Sci U S A
December 2024
Civil and Environmental Engineering Department, Northwestern University, Evanston, IL 60208.
Le Chatelier in 1887 and Powers in 1947 demonstrated that the volume of nanoscale C-S-H (calcium silicate hydrate) particles formed during hydration is smaller than the combined volume of the reactants-the anhydrous Portland cement and water. Hydration has thus been considered as contractive. An experiment shows that the opposite is true above the nanoscale.
View Article and Find Full Text PDFSuccessful treatment of small bowel phytobezoar using double balloon enterolithotripsy combined with sequential catharsis: A case report.
World J Radiol
November 2024
Department of Gastroenterology, Shenzhen Hospital of Southern Medical University, Shenzhen 518100, Guangdong Province, China.
Background: Small bowel bezoar obstruction (SBBO) is a rare clinical condition characterized by hard fecal masses in the small intestine, causing intestinal obstruction. It occurs more frequently in the elderly and bedridden patients, but can also affect those with specific gastrointestinal dysfunctions. Diagnosing SBBO is challenging due to its clinical presentation, which mimics other intestinal obstructions.
View Article and Find Full Text PDFDeformation dynamics of an oil droplet into a crescent shape during intermittent motion.
Phys Rev E
October 2024
Department of Physics, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan.
A paraffin droplet containing camphor and oil red O (dye) floating on the water surface shows spontaneous motion and deformation generated by the surface tension gradient around the droplet. We focused on the intermittent motion with a pronounced deformation into a crescent shape observed at specific concentrations of camphor and oil red O. We quantitatively analyzed the time changes in the droplet deformation and investigated the role of the oil red O by measuring the time-dependent paraffin-water interfacial tension with the pendant drop method.
View Article and Find Full Text PDFEffect of Indigofera aspalathoides on the Expression of Inducible Nitric Oxide Synthase During 7,12-Dimethylbenz[a]anthracene-Induced Hamster Buccal Pouch Carcinogenesis.
Cureus
October 2024
Department of General Medicine, Al Azhar Medical College Hospitals and Research Institute, Thodupuzha, IND.
Background: The mechanisms of inflammation and carcinogenesis are significantly influenced by nitric oxide (NO). Three different kinds of nitric oxide synthase (NOS) have been previously found: neuronal NOS, inducible nitric oxide synthase (iNOS), and endothelial NOS.
Objectives: This study looked into the properties of iNOS in hamster buccal pouch carcinogenesis caused by 7,12-dimethylbenz[a]anthracene (DMBA).
Towards the discovery of unrevealed flufenamic acid cocrystals via structural resemblance for enhanced topical drug delivery.
Int J Pharm
January 2025
Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; Advanced Biomedical Instrumentation Centre, Hong Kong Science Park, Shatin, New Territories, Hong Kong. Electronic address:
Cocrystallization has emerged as a promising formulation strategy for modulating transdermal drug absorption by enhancing solubility and permeability. However, challenges related to cocrystal dissociation in the semi-solid state need to be addressed to mitigate regulatory concerns before the widespread implementation of topical cocrystal products in clinical practice. This study aimed to develop oil-based topical formulations incorporating cocrystals with distinct thermodynamic stabilities, followed by investigating the roles of different structurally similar coformers and oily vehicles on their physicochemical properties.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!