Ger1 is a secreted aspartic acid protease essential for spore germination in Ustilago maydis.
Yeast
; 40(2): 102-116, 2023 02.
Article
en En
| MEDLINE
| ID: mdl-36562128
Ustilago maydis expresses a number of proteases during its pathogenic lifecycle. Some of the proteases including both intracellular and extracellular ones have previously been shown to influence the virulence of the pathogen. However, any role of secreted proteases in the sporulation process of U. maydis have not been explored earlier. In this study we have investigated the biological function of one such secreted protease, Ger1 belonging to aspartic protease A1 family. An assessment of the real time expression of ger1 revealed an infection specific expression of the protein especially during late phases of infection. We also evaluated any contribution of the protein in the pathogenicity of the fungus. Our data revealed an involvement of Ger1 in the sporulation and spore germination processes of U. maydis. Ger1 also showed positive influence on the pathogenicity of the fungus and accordingly the ger1 deletion mutant exhibited reduced pathogenicity. The study also demonstrated the protease activity associated with Ger1 to be essential for its biological function. Fluorescence microscopy of maize plants infected with U. maydis cells expressing Ger1-mcherry-HA also revealed that Ger1 is efficiently secreted within maize apoplast.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ustilago
/
Basidiomycota
/
Proteasas de Ácido Aspártico
Idioma:
En
Revista:
Yeast
Asunto de la revista:
MICROBIOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Reino Unido