Design, Synthesis, and Bioactivity of Novel Coumarin-3-carboxylic Acid Derivatives Containing a Thioether Quinoline Moiety.

A series of coumarin-3-carboxylic acid derivatives containing a thioether quinoline moiety were designed and synthesized. The structures of these compounds were determined using H NMR, C NMR, and HRMS. The antibacterial activity of the compounds was evaluated against pv (), (), and ().

Antibacterial activities of coumarin-3-carboxylic acid against .

Coumarin-3-carboxylic acid (3-CCA), previously screened from natural coumarins, was found to possess strong antibacterial activity against (). In order to further evaluate the activity of this compound against plant bacterial pathogens and explore its potential value as a bactericidal lead compound, the activity of 3-CCA against 14 plant pathogenic bacteria and was tested. Results showed that 3-CCA exhibited strong activities against pv.

Isolation, Characterization and Antibacterial Activity of 4-Allylbenzene-1,2-diol from .

Isolation for antibacterial compounds from natural plants is a promising approach to develop new pesticides. In this study, two compounds were obtained from the Chinese endemic plant using bioassay-guided fractionation. Based on analyses of H-NMR, C-NMR, and mass spectral data, the isolated compounds were identified as 4-allylbenzene-1,2-diol and (S)-4-allyl-5-(1-(3,4-dihydroxyphenyl)allyl)benzene-1,2-diol.

Two adjacent mutations in the conserved domain of SdhB confer various resistance phenotypes to fluopyram in Corynespora cassiicola.

Background: For Corynespora cassiicola (Berk. & M.A.

Antifungal Activity of Alpha-Mangostin against In Vitro and In Vivo.

We investigated alpha-mangostin (α-mangostin, α-MG), a xanthone natural product extracted from the pericarp of mangosteen (), for its antifungal activities and possible mechanism against which causes mango anthracnose. The results demonstrated that α-MG had a relatively high in vitro inhibitory activity against among 20 plant pathogenic fungi. The median effective concentration (EC) values of α-MG against mycelial growth were nearly 10 times higher than those of spore germination inhibition for both strains of , the carbendazim-sensitive () and carbendazim-resistant ().

Occurrence, Distribution, and Characteristics of Boscalid-Resistant Corynespora cassiicola in China.

Corynespora blight, caused by Corynespora cassiicola (Berk. & M.A.

Identification of Plant-Pathogenic Fungi Using Fourier Transform Infrared Spectroscopy Combined with Chemometric Analyses.

Identification of plant-pathogenic fungi is time-consuming due to cultivation and microscopic examination and can be influenced by the interpretation of the micro-morphological characters observed. The present investigation aimed to create a simple but sophisticated method for the identification of plant-pathogenic fungi by Fourier transform infrared (FTIR) spectroscopy. In this study, FTIR-attenuated total reflectance (ATR) spectroscopy was used in combination with chemometric analysis for identification of important pathogenic fungi of horticultural plants.