Listeria monocytogenes is an important pathogen that has been implicated in foodborne illnesses and the recall of products such as fruit and vegetables. This study determines the prevalence of virulence-associated genes and serogroups and evaluates the effects of different growth media and environmental conditions on biofilm formation by L. monocytogenes. Eighteen L. monocytogenes isolates from Hass avocados sold at markets in Guadalajara, Mexico, were characterized by virulence-associated genes and serogroup detection with PCR. All isolates harbored 88.8% actA, 88.8% plcA, 83.3% mpl, 77.7% inlB, 77.7% hly, 66.6% prfA, 55.5% plcB, and 33.3% inlA. The results showed that 38.8% of isolates harbored virulence genes belonging to Listeria pathogenicity island 1 (LIPI-1). PCR revealed that the most prevalent serogroup was serogroup III (1/2b, 3b, and 7 (n=18, 66.65%)), followed by serogroup IV (4b, 4d-4e (n=5, 27.7%)) and serogroup I...
Conditions of in vitro biofilm formation by serogroups of Listeria monocytogenes isolated from Hass avocados sold at markets in Mexico.
Centro de Investigacion en Biotecnologia Microbiana y Alimentaria, Departamento de Ciencias Basicas, Division de Desarrollo Biotecnologico, Centro Universitario de la Cienega, Universidad de Guadalajara, Av. Universidad 1115, Ocotlan 47810, Jalisco, Mexico. E-mail email@example.com
- Views Icon Views
- Share Icon Share
- Search Site
Avila-Novoa, M. G., Navarrete-Sahagun, V., Gonzalez-Gomez, J. P., Novoa-Valdovinos, C., Guerrero-Medina, P. J., Garcia-Frutos, R., Martinez-Chavez, L., Martinez-Gonzales, N. E., Gutierrez-Lomeli, M.; Conditions of in vitro biofilm formation by serogroups of Listeria monocytogenes isolated from Hass avocados sold at markets in Mexico.. IFIS Food and Health Sciences Database 2022; doi:
Download citation file: