Thymol nanoemulsion exhibits potential antibacterial activity against bacterial pustule disease and growth promotory effect on soybean

Autor:	R.V. Kumaraswamy, Sarita Kumari, Ramesh Raliya, Ajay Pal, Pratim Biswas, Ram Chandra Choudhary, S.S. Sharma, Vinod Saharan
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Sonication Saponin lcsh:Medicine 02 engineering and technology Article law.invention chemistry.chemical_compound 0404 agricultural biotechnology Pulmonary surfactant Microscopy Electron Transmission Plant Growth Regulators law Spectroscopy Fourier Transform Infrared Oils Volatile Food science lcsh:Science Thymol Essential oil Plant Diseases chemistry.chemical_classification Multidisciplinary biology Chemistry Quillaja lcsh:R food and beverages 04 agricultural and veterinary sciences 021001 nanoscience & nanotechnology biology.organism_classification 040401 food science Dynamic Light Scattering Creaming Anti-Infective Agents Local Microscopy Electron Scanning Xanthomonas axonopodis Emulsions lcsh:Q Soybeans 0210 nano-technology Antibacterial activity
Zdroj:	Scientific Reports, Vol 8, Iss 1, Pp 1-12 (2018) Scientific Reports
ISSN:	2045-2322
Popis:	An antibacterial and plant growth promoting nanoemulsion was formulated using thymol, an essential oil component of plant and Quillaja saponin, a glycoside surfactant of Quillaja tree. The emulsion was prepared by a sonication method. Fifty minutes of sonication delivered a long term stable thymol nanoemulsion which was characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), cryogenic-field emission scanning electron microscopy (Cryo-FESEM) and fourier transform infra-red (FTIR) spectroscopy. Creaming index, pH and dilution stability were also studied for deliberation of its practical applications. The nanoemulsion (0.01–0.06%, v/v) showed substantial in vitro growth inhibition of Xanthomonas axonopodis pv. glycine of soybean (6.7-0.0 log CFU/ml). In pot experiments, seed treatment and foliar application of the nanoemulsion (0.03–0.06%, v/v) significantly lowered the disease severity (DS) (33.3–3.3%) and increased percent efficacy of disease control (PEDC) (54.9–95.4%) of bacterial pustule in soybean caused by X. axonopodis pv. glycine. Subsequently, significant enhancements of plant growth were also recorded in plants treated with thymol nanoemulsion. This is the first report of a thymol based nanoemulsion obtained using Quillaja saponin as a surfactant. Our study claims that nano scale thymol could be a potential antimicrobial and plant growth promoting agent for agriculture.
Databáze:	OpenAIRE
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