Eugenol enhances the resistance of tomato against tomato yellow leaf curl virus

Abstract

This is the first report of eugenol as an elicitor and its ability to suppress plant virus diseases under greenhouse conditions. It is suggested that eugenol has the potential to be an effective biocontrol agent against TYLCV in tomato plants.

Transient expression of siRNA targeted against the TYLCV AV1, AC1 and AC3 genes for high resistance in tomato

“…The economically important crop tomato is easily infected by TYLCV; this virus has caused severe economic losses in many tomato cultivation regions in China (Wang and Fan, 2014). Control measures in infected regions are based on the limitation of vector populations using physical barriers or chemicals.…”

Efficacy of Leaf Oil from Pimenta racemosa var. racemosa in Controlling Bacterial Wilt of Tomato

“…Indeed, at a concentration of 0.04% chemotype 3, only 32% of the plants wilted (corresponding to a disease reduction of 50% when compared with the control) even though the populations of R. solanacearum in the soil were not significantly reduced at the time of transplantation of tomato plants compared with the untreated control. A recent study by Wang and Fan (2014) demonstrated that eugenol greatly influenced tomato resistance to Tomato leaf curl virus. These authors showed that eugenol is an effective activator of induced plant systemic acquired resistance by triggering the salicylic acid biosynthesis pathway.…”

“…systemic resistance in Heatmaster tomato against bacterial wilt by chemotype 3 of P. racemosa var. racemosa essential oil can be evaluated by measuring the activity of defense-related enzymes and the activity of pathogenesis-related proteins, which are excellent molecular markers for the response of resistance to pathogens (Hassan et al 2009;Wang and Fan 2014). The effectiveness of chemotype 3 of P. racemosa var.…”

Synthesis and Biological Evaluation of New Eugenol-Derived 1,2,3-Triazoles as Antimycobacterial Agents

“…In the IR spectra of the glycosides, two strong bands at 1738 and 1743 cm -1 are associated with the C=O stretch of the acetyls. Complementary, their 13 C NMR spectra present signals at d 170.6, 170.3, 169.4 and 169.4 for TS21 and d 170.6, 170.3, 169.4 and 169.42 ppm for TS22 that are attributed to the carbonylic carbons. For the anomeric configuration in TS22, the coupling constant J 8.0 Hz in its 1 H NMR spectrum is conclusive of the diaxial coupling associated with a β configuration.…”

“…11 Considering the reduced introduction of novel antibiotics in the market and the increasing resistance to the commonly used in mycobacterial infections, the urge for new antimycobacterial agents is a reality. Eugenol, a natural phenylpropanoid, is known to display a diverse group of biological activities including antifungal, 12 antiviral, 13 anticancer, 14 leishmanicidal 15 and antimycobacterial activity. 16 Concerning the interest in mycobacteria growth inhibition, the 1,2,3-triazole ring is an important heterocycle in medicinal chemistry and is present in compounds with prominent activity against M. tuberculosis strains, such as MDR-TB (multi-drug-resistant tuberculosis) and DR-TB (drug-resistant tuberculosis).…”