The contest of microbial pigeon neighbors: Interspecies competition between Serratia marcescens and the human pathogen Cryptococcus neoformans.
Fungal Biol
; 124(7): 629-638, 2020 07.
Article
en En
| MEDLINE
| ID: mdl-32540186
In nature, microorganisms often exhibit competitive behavior for nutrients and limited space, allowing them to alter the virulence determinants of pathogens. The human pathogenic yeast Cryptococcus neoformans can be found organized in biofilms, a complex community composed of an extracellular matrix which confers protection against predation. The aim of this study was to evaluate and characterize antagonistic interactions between two cohabiting microorganisms: C. neoformans and the bacteria Serratia marcescens. The interaction of S. marcescens with C. neoformans expressed a negative effect on biofilm formation, polysaccharide capsule, production of urease, and melanization of the yeast. These findings evidence that competition in mixed communities can result in dominance by one species, with direct impact on the physiological modulation of virulence determinants. Such an approach is key for understating the response of communities to the presence of competitors and, ultimately, rationally designing communities to prevent and treat certain diseases.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Serratia marcescens
/
Biopelículas
/
Cryptococcus neoformans
/
Interacciones Microbianas
Idioma:
En
Revista:
Fungal Biol
Asunto de la revista:
MICROBIOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos