Lixian Wu^1,#, Yongquan Li^1,#, Qiaoguang Li², Jingxuan Li¹, Qinghua Lao¹, Yucheng Zhong¹, Hui Zhang^1,*, Xiu Hu^1,*

Journal of Renewable Materials, Vol.11, No.2, pp. 975-989, 2023, DOI:10.32604/jrm.2022.023547

Abstract This study aimed to explore the anti-bacterial and anti-fungal activities of extracts from different parts of plants in the Zingiberaceae family. The inhibitory rate, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of leaf and stem, and root and rhizome extracts from Alpinia katsumadai Hayata, Alpinia oxyphylla Miq × Alpinia henryi K. Schumann, Alpinia oblongifolia Hayata, Alpinia nigra (Gaertn.) Burtt, Amomum villosum Lour, Alpinia zerumbet (Pers.) Burtt. et Smith and Alpinia oxyphylla Miq were determined using the fungus cake method and double dilution method. The seven Zingiberaceae plants exhibited characteristic antibacterial activities against pathogenic bacteria and fungi. At a… More >

Roberto Arredondo-Valdés¹, Francisco D. Hernández-Castillo², Mario Rocandio-Rodríguez¹, Julia C. Anguiano-Cabello³, Madai Rosas-Mejía¹, Venancio Vanoye-Eligio¹, Salvador Ordaz-Silva⁴, Imelda V. López-Sánchez⁴, Laura D. Carrazco-Peña⁴, Julio C. Chacón-Hernández^1,*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 895-906, 2021, DOI:10.32604/phyton.2021.014301

Abstract The tomato (Solanum lycopersicum L.) is one of the world’s most important vegetable crops. Still, phytopathogenic bacteria affect the yield and quality of tomato cultivation, like Agrobacterium tumefeciens (At), Clavibacter michiganensis subsp. michiganensis (Cmm), Pseudomonas syringae pv. tomato (Pst), Ralstonia solanacearum (Rs), and Xanthomonas axonopodis (Xa). Synthetic chemical products are used mostly on disease plant control, but overuse generates resistance to bacterial control. This study aimed to evaluate the in vitro antibacterial activity of the ethanolic extract of Moringa oleifera Lam. leaves against At, Cmm, Pst, Rs, and Xa, as well as information about this plant species’ chemical composition. Antibacterial… More >

SAIDA MELIANI¹, SOUMAYA TOUMI¹, HEYTHEM DJAHOUDI², KHALED DEGHDEGH³, KAMEL AMOURA⁴, ABDELGHANI DJAHOUDI^5,*

BIOCELL, Vol.44, No.2, pp. 175-182, 2020, DOI:10.32604/biocell.2020.09097

Abstract Objective: The aim of this study is to detect in vitro the synergetic activity of colistin in combination with imipenem, amikacin or ciprofloxacin, at sub-inhibitory concentrations, against carbapenems-resistant (CR) Acinetobacter baumannii and Pseudomonas aeruginosa strains isolated from various wards in Annaba teaching hospital in eastern Algeria.
Materials and Methods: The minimal inhibitory concentrations (MIC) were determined by broth macrodilution (BMD). Carbapenemase encoding genes were screened using polymerase chain reaction (PCR). The activity of colistin in combination with second antibiotic was evaluated by the Checkerboard Technique.
Results: 39 CR P. aeruginosa and 21 CR A. baumanni strains where collected. The MIC… More >

Carmona MA¹, E Simonetti^2,3, ME Ravotti¹, MM Sc,iani⁴, AG Luque⁴, NA Formento⁵, FJ Sautua¹

Phyton-International Journal of Experimental Botany, Vol.86, pp. 265-269, 2017, DOI:10.32604/phyton.2017.86.265

Abstract Soybean root and stem rots caused by soil-borne pathogens are diseases commonly found in soybean fields, and one of the most important causes of crop losses. In the present study, the mycelial sensitivity of Fusarium virguliforme, F. tucumaniae, Sclerotinia sclerotiorum and Macrophomina phaseolina was evaluated on potato dextrose agar media (25 mL) supplemented with different concentrations of manganese phosphite (MnPhi) diluted in water (0, 25, 37.5, 50, 100, 200, 300, 400, 500, 800 and 1000 μg/mL). Mycelial growth sensitivity was analyzed using logarithmic linear regression analysis. The MnPhi concentration needed to inhibit 50% of the mycelial growth (IC₅₀) ranged from… More >