Artículo
Selenium stress response of the fruit origin strain Fructobacillus tropaeoli CRL 2034
Martínez, Fernando Gabriel
; Moreno Martin, Gustavo; Mozzi, Fernanda Beatriz
; Madrid, Yolanda; Pescuma, Micaela
Fecha de publicación:
01/2023
Editorial:
Springer
Revista:
Applied Microbiology and Biotechnology
ISSN:
0175-7598
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The fruit-origin strain Fructobacillus tropaeoli CRL 2034 can biotransform selenium into seleno-nanoparticles and selenocysteine. The proteomic analysis of F. tropaeoli CRL 2034 exposed to 5 and 100 ppm of Se showed a dose-dependent response since 19 and 77 proteins were deregulated, respectively. In the presence of 5 ppm of Se, the deregulated proteins mainly belonged to the categories of energy production and conversion or had unknown functions, while when cells were grown with 100 ppm of Se, most of the proteins were grouped into amino acid transport and metabolism, nucleotide transport and metabolism, or into unknown functions. However, under both Se conditions, glutathione reductases were overexpressed (1.8–3.1-fold), while mannitol 2-dehydrogenase was downregulated (0.54–0.19-fold), both enzymes related to oxidative stress functions. Mannitol 2-dehydrogenase was the only enzyme found that contained SeCys, and its activity was 1.27-fold increased after 5 ppm of Se exposure. Our results suggest that F. tropaeoli CRL 2034 counteracts Se stress by overexpressing proteins related to oxidative stress resistance and changing the membrane hydrophobicity, which may improve its survival under (food) storage and positively influence its adhesion to intestinal cells. Selenized cells of F. tropaeoli CRL 2034 could be used for producing Se-enriched fermented foods.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CERELA)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Martínez, Fernando Gabriel; Moreno Martin, Gustavo; Mozzi, Fernanda Beatriz; Madrid, Yolanda; Pescuma, Micaela; Selenium stress response of the fruit origin strain Fructobacillus tropaeoli CRL 2034; Springer; Applied Microbiology and Biotechnology; 107; 4; 1-2023; 1329-1339
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